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Electron Microscopy Sciences

Tweezers and Tools

arrow13Timers, pH, Light Meters, Thermometers, and Microwave Detectors

Pocket Reference Bookarrow12Pocket Reference Book

Compiled by Thomas J. Glover, 2nd edition. Sequoia Publishing Inc.

A book with thousands of hours of research and hard work. This book contains almost every information that one needs to know, right on the fingertip, without searching hour after hour. Book measures 5⅝" x 3¼" x ⅝" thick with 542 pages and a soft cover.

31210 Pocket Reference Book each 14.50 Add to Cart

ific Calculatorarrow12Scientific Calculator

Highly efficient solar panel requires only 50 lux, works with any available light. Will never need batteries. 10 digit LCD + 2 digit exponent. 15 levels of parenthesis. 67 functions including all the preprogrammed functions of Large Display Scientific Calculator 830003 Plus; binary, octal decimal, sexagesimal, and hexadecimal conversion, and standard deviation. Comes with a soft carrying pouch, instructions and a button cell battery.

Dimensions: 5¼" x 2¾" x 7/16" (133 x 70 x 11 mm).
Weight: 2 oz (57g).

70090 Scientific Calculator each 30.00 Add to Cart

Metric Converterarrow12Metric Converter

Professional grade U.S. standard to metric conversion calculator. Carry anywhere for U.S. to metric and metric to U.S. conversions of volume, area, length, weight or temperature. Also functions as a standard calculator. Results are easy to read on the large 8 digit display. Solar powered with a back up battery for use in low light areas. Automatic power off. Comes ready to use in a hard folding case with full instructions and button cell batteries.

Dimensions: 5" x 3" x ½"
Weight: 2.6 oz (73g)

70092 Metric Converter each 27.00 Add to Cart

EMS Mini Lab Balancearrow12EMS Mini Lab Balances


  • Easy-to-read, backlit, liquid crystal display
  • Calibration function
  • Includes AAA batteries
  • Snap on, protective cover
  • Compact, less than 3" wide

EMS Mini Lab Balances are extraordinarily compact, easy to use, and convenient for a variety of laboratory weighing applications. With a footprint of only 2.6 x 3.9", these Mini Balances offer exceptional accuracy and linearity through their full weighing ranges.

Available with either a 100g or 500g capacity, these digital balances feature an easy to read, backlit, liquid crystal display. Buttons for ON/OFF, MODE and TARE are located on the front for easy access. The software includes a calibration function for in-lab calibration with a 100g or 500g calibration weight. Calibration weights are available separately.

Designed for portability, EMS Mini Balances are powered by 2 AAA batteries (included). After one minute sitting idle, the power automatically shuts off to conserve battery life. Ideal for lab or field use, each balance includes a snap on, protective cover, with instructions conveniently printed on the underside.


Model Mini Lab Balance 100g Mini Lab Balance 500g
Max Capacity 100g 500g
Readability 0.01g 0.1g
Repeatability 0.01g 0.1g
Linearity ± 0.01g ± 0.1g
Calibration External External
Pan Size 2.1 x 2.25" / 5.3 x 5.7 cm 2.1 x 2.25" / 5.3 x 5.7 cm
Weighing Units g, ct, dwt, gn g, ct, dwt, gn
Display Backlit LCD Backlit LCD
Power 2 AAA Batteries 2 AAA Batteries
Exterior Dimensions 2.6 (W) x 3.9 (D) x 0.75 (H)"
6.6 x 9.9 x 1.9 cm
2.6 (W) x 3.9 (D) x 0.75 (H)"
6.6 x 9.9 x 1.9 cm
Warranty 90 Days 90 Days

Ordering Information

87052-01 EMS Mini Lab Balance, 100g / 0.01g readability each 46.00 Add to Cart
87052-02 EMS Mini Lab Balance, 500g / 0.1g readability each 41.00 Add to Cart
87053-01 F1 Grade Calibration Weight, 100g each 57.00 Add to Cart
87053-03 F1 Grade Calibration Weight, 500g each 90.00 Add to Cart

easure for Measurearrow12Measure for Measure

At last, a GREAT Conversion Factor Handbook!

  • THE conversion factor handbook – 864 pages worth
  • Contains over 39,000 conversions for over 5100 different Units
  • Comprehensive SI reference (the International Standard)
  • Thousands of foreign and ancient conversion factors
  • Accurate to 8 significant figures
  • Value listed in both standard and scientific notation
  • Handy 4" x 6" size with a durable Lexotone cover
  • Nothing else like it on the market today
  • A MUST for everyone!
31200 Measure for Measure Book each 19.00 Add to Cart

Checkerarrow12Checker Plus®

Modern Substitute for Litmus Paper with Replaceable Electrode

The Checker Plus electronic pH tester supplies you with fast and accurate readings on a large LCD. The electrode can be replaced, allowing the tester to last for years. Checker Plus is great for environmental, field and laboratory testing. Also suitable for checking electrodes in pipes and tanks and various laboratory applications. The Checker Plus pH tester includes a replaceable electrode with a screw-type connector, 2 sachets of 4.01 buffer solution, 2 sachets of 7.01 buffer solution, 2 sachets of cleaning solution and a plastic carrying case.


  • Large and easy-to-read LCD.
  • High accuracy with 0.01 pH resolution.
  • Automatic, one or two points calibration.
  • Battery life: 1,000 hours of continuous use.
  • Wide range: 0.00 to 14.00 pH.
  • Replaceable pH electrode.

Specifications for Checker Plus pH Tester

Range 0.00 to 14.00 pH
Resolution 0.01 pH
Accuracy ± 0.2 pH (@20C/68F)
Typical EMC Deviation: ± 0.1 pH
Calibration Automatic, one or two points with three standard buffers available (pH 4.01, 7.01 and 10.01)
Battery Type / Life 1.5V CR2032 (1) / 1000 hours
Environment 0 to 50°C (32 to 122 F); RH max 95%
Dimensions 50 x 174 x 21 mm (2 x 6.8 x 0.9") (Tester only)
Weight 50 g (1.8 oz.) (Tester only)

arrow12pH Electrode for Checker Plus

Model # Junction Shape* Plug Pressure
Temp. Range C Body Cell
HI 1271 Open SA Screw 0.1/1.45 0/+50 Polypro Viscolene

* SA: Sphere, 3.0mm Diameter

70699-02 Checker Plus each 72.00 Add to Cart
70700-01 HI 1271 Replacement Electrode each 15.00 Add to Cart

msdsmsdsmsdsiccolo Plus pH Meterarrow12Piccolo Plus pH Meter

A new Improved 0.01 pH Accuracy, Replaceable probe & Temperature Read-out

Piccolo is a revolutionary pH-meter with a 4-in-1 "Electrode + Amplifier" design. Conventional pH meters are susceptible to the weak high impedance signal which makes the electrode, connector, cable and meter delicate and vulnerable to noise, humidity and dirty environments. Piccolo has overcome these problems with a pre-amplified electrode delivering a strong signal to the meter.

Piccolo has the same precision as a lab-grade meter with a resolution and accuracy of ±0.01 pH, at a fraction of the price.


  • Easy to use: Battery operated and weighing only 100 grams.
  • Replacement Electrode: The detachable electrode has sealed electrons to protect from humid and dusty environments.
  • Automatic Temperature Compensation (ATC): A temperature sensor housed in the electrode provides ATC from 0 to 70°C (32 to 144°F)
  • Temperature Read-out: A thermometer built inside a pH meter! Accurate temperature read-out directly on LCD.

Piccolo Plus comes complete with a 4-in1 Ph electrode, pH 4 and pH 7 buffer solutions, a small calibration screwdriver in a rugged carrying case.


Range pH/°C 1.00 to 13.00 pH/0.0 to 70°C
Resolution pH/°C 0.01 pH/0.1°C
Accuracy pH/°C (@20°C/68°F) ±0.01 pH/ ±1°C
Typical EMS Deviation pH/°C ±0.2 pH/ ±1°C
Calibration Manual 2 points through trimmers
Battery Type/Life 3x1.4V/100 hours approx. continuous use
Environment 0 to 50°C (32 to 122°F); RH 95%
Dimensions 265 x29x15mm (10.4 x 1.2x0.6")
Weight 400g (14.1 oz) with carrying case
70694 Piccolo Plus pH Meter Set each 238.00 Add to Cart
70695 Replacement pH Electrode HI 1295 pack 147.00 Add to Cart
70696 Calibration Kit, pH 7&10, 20 ml each 23.00 Add to Cart
70696-02 Calibration Kit, pH 4 & 7, 20 ml each 23.00 Add to Cart
70697 Buffer Solutions, pH 4.01 & 7.01 (2x230 ml) set 24.00 Add to Cart
70698 Storage Solution, 230 ml each 15.00 Add to Cart

arrow12pH Indicator Papers – Test Papers

msdspH Indicator Papers – Test Papers1. pH-Fix™ Universal Indicator Sticks

In contrast to conventional indicator papers, the indicator dyes of pH-Fix sticks are substantially bound to the cellulose fibers. As a result, the possibility of the color bleeding, even in strongly basic solutions, is avoided. Furthermore, there are the following advantages:

  • Measurement of pH value is possible even in unbuffered or very weakly buffered solutions, since the sticks can be left in the solution until the final color change is completed.
  • Test samples are not contaminated by the indicator dyes.
  • Colors of the individual color fields cannot run into each other, thereby allowing for a more precise comparison with the color scale.
  • Recently developed indicator dyes guarantee a sharp differentiation between the individual pH values and a clear and easy comparison to the color scale.
  • Sample application – four different indicator papers 6x5 mm are sealed on to a plastic strip 6x85 mm. The strips are sufficiently long to avoid contact between the fingers and the test sample.

pH-Fix™ Indicator Sticks are packed in a box of 100 sticks 6 x 85 mm.

Cat. No pH Range pH  Gradation Pack Price  
65510-10 0.0-14 1.0 100/bx 18.50 Add to Cart
65510-15 0.0-6.0 0.5 100/bx 18.50 Add to Cart
65510-18 2.0-9.0 0.5 100/bx 18.50 Add to Cart
65510-20 4.5-10 0.5 100/bx 18.50 Add to Cart
65510-25 7.0-14 0.5 100/bx 18.50 Add to Cart
65510-30 0.3-2.3 0.3/0.4 100/bx 18.50 Add to Cart
65510-35 1.7-3.8 0.3 100/bx 18.50 Add to Cart
65510-40 3.6-6.1 0.3/0.5 100/bx 18.50 Add to Cart
65510-45 5.1-7.2 0.3 100/bx 18.50 Add to Cart
65510-50 6.0-7.7 0.3/0.4 100/bx 18.50 Add to Cart
65510-55 7.5-9.5 0.2/.04 100/bx 18.50 Add to Cart
65510-60 7.9-9.8 0.2/0.4 100/bx 18.50 Add to Cart
PEHANON® pH Indicator Stripsarrow122. PEHANON® pH Indicator Strips

This is a series of pH indicator papers where the indicator and color scale are combined on a single strip. They permit a fast, convenient and accurate pH value determination since they eliminate the necessity to compare color against a separate scale. This presentation also permits the pH measurement of colored solutions and suspensions, since the color of the test solution acts on the comparison scale in the same manner as on the indicator field. The PEHANON® series covers the entire pH range from 0 to 12 with one universal paper and 13 narrow ranges which overlap to permit the user utmost selectivity for the range suited to each particular need.

The indicator zone (unprinted field) is in the center of the strip, the comparison fields above and below same. The strip is submerged in the solution for about three seconds so that all colors zone are wetted whereby the center field changes color according to the pH value of the solution and is then compared against the color filed bearing the corresponding pH value imprint. An invisible hydrophobic barrier just above the top color field prevents capillary action of the test solution beyond that point and corrosive, toxic or otherwise noxious liquids to not come in contact with fingers which remain clean and dry.

Strips are packed in a plastic box, containing 200 strips.

Cat. No pH Range pH Gradation Pack Price  
65511-01 1.0-12.0 1.0 200/bx 31.00 Add to Cart
65511-11 0.0-1.8 0.2/0.3 200/bx 32.00 Add to Cart
65511-12 1.0-2.8 0.2/0.3 200/bx 31.00 Add to Cart
65511-13 1.8-3.8 0.2/0.3 200/bx 31.00 Add to Cart
65511-14 2.8-4.6 0.2/0.3 200/bx 31.00 Add to Cart
65511-15 3.8-5.5 0.2/0.3 200/bx 31.00 Add to Cart
65511-16 4.0-9.0 0.5 200/bx 31.00 Add to Cart
65511-17 5.2-6.8 0.2/0.3 200/bx 31.00 Add to Cart
65511-18 6.0-8.1 0.3 200/bx 31.00 Add to Cart
65511-19 7.2-8.8 0.2/0.3 200/bx 31.00 Add to Cart
65511-20 8.0-9.7 0.2/0.3 200/bx 31.00 Add to Cart
65511-21 9.5-12.0 0.5 200/bx 31.00 Add to Cart
65511-22 10.5-13.0 0.5 200/bx 31.00 Add to Cart
65511-23 12.0-14.0 0.5 200/bx 31.00 Add to Cart

training manualpH Pensarrow12pH Pens

Easy to carry, simple to operate and sufficient for most field pH tests

Highly stable and accurate readings with a large LCD display. Designed for simple one-hand operation. Automatically calibrates to pH 4, 7, 10 buffers and can be adjusted to recognize non-standard buffers as well. These pH pens offer unbeatable solutions for applications such as waste-water, surface water, aquaculture, hydroponics, pools, and education. They each feature hold function, and auto power off with low battery indicator. The cases are IP65 waterproof, and will float if accidentally dropped into the water. They come with 4 button-cell batteries and a built-in electrode kept moist with a protective cap.

Dimensions: 6½" x 1½" x 1½" (165 x 38 x 38 mm)
Weight: 2.3 oz (65 g)


Product Large
Large Display
Large Display
ATC 0.01
Range 2 to 12 0 to 14 0 to 14
Resolution 0.1 0.1 0.01
Accuracy ±0.3 pH ±0.2 pH ±0.05 pH
Auto 3 pt Calibration 3 pt 3 pt 3 pt
Lactose 0.0 to 16.5% 0.1% ±0.2%
Waterproof X X X
Indicates Low Battery X X X
Auto Power Off X X X
Auto Buffer Recognition X X X
Hold X X X
Auto Temp Compensation X X X
°C & °F Display X X X
Special Features Floats
70693-01 Large Display pH Pen each 44.00 Add to Cart
70693-02 Large Display ATC pH Pen each 59.00 Add to Cart
70693-03 Large Display ATC 0.01 pH Pen each 94.00 Add to Cart

pH Meterarrow12Basic pH Meter

Simple to operate and sufficient for many field and lab pH tests

Large ⅞" high digits and lightweight design make this pH meter ideal for both field and lab applications. Simple to operate and works with any electrode with a BNC connector. Measures the full 0 to 14 pH range with a high 0.01 pH resolution. Features 2-pt. calibration, hold function, fold-out easel back and a tripod screw. Comes with a 9V battery, calibration tool, and full instructions.

Probe not included.

Meter Dimensions: 8" x 2¾" x 1" (203 x 70 x 25 mm)

Meter Weight: 7.2 oz (204 g)


Range Resolution Accuracy
0.0 to 14 pH 0.01 pH ±0.07 pH (pH 5 to 9)
±0.2 pH (<5 pH, >9 pH)
Meter only, after calibration and including error for
temperatures of 23 ± 5°C.
72087-01 Basic pH Meter each 85.00 Add to Cart

Basic pH Meter Kitarrow12Basic pH Meter Kit

Includes everything necessary for immediate field use: Basic pH Meter, epoxy body, sealed reference combination electrode with a BNC connector and 2½-ft cable, pH buffers 4 and 7, deionized water, instructions, 9V battery, hard carrying case.

Kit Dimensions: 11" x 9½" x 2" (279 x 241 x 51 mm)

72087-02 Basic pH Meter Kit each 235.00 Add to Cart

Training ManualAdvanced pH Meterarrow12Advanced pH Meter

Benchtop level analysis in the field

Reads either pH (in 0.01 resolution) or mV in large digits, with time, date, and temperature (in °C or °F) shown simultaneously on the lower display. Also indicates stable reading, low battery and displays calibration data. Scroll 99 data points with time stamps and min/max readings directly on the backlit LCD. Features hold, up to 5 point calibration, N.I.S.T. buffer recognition, manual or automatic temperature compensation, and a USB port. Comes with 4 AAA batteries. Will accept any pH or ORP probe with a BNC connector.

Probe not included.

Meter Dimensions: 7" x 2¾" x 1¼" (178 x 70 x 32 mm)

Meter Weight: 6.5 oz (184 g)


Unit of Measure Range Resolution Accuracy
pH: 0 to 14 0.01 ±0.02 pH
mV: -499 to 499 ±0.1 mV (-199.9 to 199.9 mV)
otherwise ±1 mV
±0.2 mV (-199.9 to 199.9 mV)
otherwise ±2 mV
ORP: -199.9 to 199.9
Temperature °F: 23 to 176°F 0.1° ± 2°F
Temperature °C: -5 to 80°C 0.1° ±1°C
72088-01 Advanced pH Meter Kit each 153.00 Add to Cart

Training ManualAdvanced pH Meter Kitarrow12Advanced pH Meter Kit

Advanced pH Meter Kit includes: Advanced pH Meter 850055 in a hard carrying case complete with a detachable temperature compensated pH probe with 3½ ft cable, pH buffers 4, 7, 10 and distilled water.

Kit Dimensions: 14" x 9" x 2¾" (356 x 229 x 70 mm)

72088-02 Advanced pH Meter Kit each 290.00 Add to Cart

pH Calibration Solutionsarrow12pH Calibration Solutions

We offer a wide selection of pH calibration and buffer solutions. Always choose a pH 7 buffer plus at least one other pH value close to your expected measurement range. Using solutions of known pH value allow you to adjust the system to read accurate measurements. Calibration should be performed before each reading or each set of readings. pH buffers allow you to adjust your testing system to measure your samples' unknown pH more precisely.

For best accuracy:

  • Perform standardizations with fresh buffer solutions.
  • Never pour used buffer back into the bottle; always discard after using.
  • Use buffers that frame the pH range of the samples you are testing (i.e. directly above and below the expected value of your sample.)
  • Match the temperature of the buffer to the temperature of the samples. For example, if your samples are at 50 degrees Celsius, warm your buffers to 50 degrees Celsius using a beaker in a water bath.
72089-01 pH 4, 3 bottles, 40 ml ea set 13.00 Add to Cart
72089-02 pH 7, 3 bottles, 40 ml ea set 13.00 Add to Cart
72089-03 pH 10, 3 bottles, 40 ml ea set 13.00 Add to Cart
72089-04 Deionized Water, 3 bottles, 40 ml ea set 13.00 Add to Cart
72089-05 pH Buffer Set: pH 4, pH 7, pH 10, 40 ml ea set 13.00 Add to Cart

TDSWaterproof Refractometer Brixarrow12Waterproof Refractometer Brix

Rugged & waterproof, ideal for field use

  • 0 to 95% Brix
  • IP65 Waterproof
  • Rugged
  • Long-life Rechargeable Battery

Cover the entire 0 to 95% Brix range with one instrument, along with nD (refractive index), temperature, and dextran, fructose, glucose, lactose, and maltose scales. Housed in a protective rubberized IP65 Waterproof case to safeguard the electronics from wet environments, which also makes for easy clean ups. A scratch proof sapphire lens ensures continued accuracy over time. Measure samples as small as 1 ml, in the field, with laboratory accuracy. Sample temperature is initially displayed on the large LCD followed by the measurement results. The sophisticated microprocessor provides automatic calibration, automatic temperature compensation and automatic shutoff (after 3 minutes). Features one button calibration to distilled water and indicates when the battery is low. Powered by a rechargeable, long-life, Li (Lithium Ion) battery providing 50,000 tests or about half a year use on a single charge. Comes ready to use with instructions, carrying case, transfer-pipet and an AC power adapter.

Dimensions: 4½" x 2¼" x 1" (108 x 57 x 25 mm)
Weight: 5 oz (141 g)


Unit of Measure Range Resolution Accuracy
Brix 0.0 to 95% 0.1% ±0.2%
nD 1.3330 to 1.532 0.0001 ±0.003nD
Dextran 0.0 to 10.6% 0.1% ±0.2%
Fructose 0.0 to 68.9% 0.1% ±0.2%
Glucose 0.0 to 59.9% 0.1% ±0.2%
Lactose 0.0 to 16.5% 0.1% ±0.2%
Maltose 0.0 to 15.6% 0.1% ±0.2%
Temperature 0.0 to 40°C 0.1% ±0.5°C
72080 Waterproof Refractometer Brix each 462.00 Add to Cart

Training ManualAnemometerarrow12Anemometer

Perfect for use in fume hoods, environmental studies, or for air flow check. A highly accurate, hand-held unit, only 3 ozs. Allows you to select readout in knots, feet per minute, meters per second, or miles per hour. To ensure maximum sensitivity and accuracy, the turbine is suspended on saphire jewel bearings, and its rotation is sensed by an infrared light beam, which adds no friction. The resulting signal is pro-cessed electrically by an LSI (Large Scale Integrated) circuit.

Powered by 3 "AAA" batteries included.

Measurements: 4½" x 2½" x 1½".

72082 Anemometer each 212.00 Add to Cart

Food Safety Thermometer with IRarrow12Food Safety Thermometer with IR

HACCP Compliant surface and internal temperature

The compact Food Safety Thermometer offers both surface and internal temperature readings in one portable convenient unit. Instantly check the surface temperature of food with the single push of a button using infrared technology. The built-in bright white flashlight helps illuminate the surface being measured. When regulations demand compliance to internal temperature such as with prepared meats, fish, or poultry, simply fold the penetration probe out to any angle, and read internal temperature on the large backlit LCD display. Programmable high and low alarms enable easy spot-checks for food safety. A fully sealed IP65 waterproof housing stands up to the rigors of food service and helps your establishment meet HACCP and FDA's Food Safety requirements. Comes complete with clear instructions and 2 "AAA" batteries.

Dimensions: 5½" x 1½" x ¾" (140 x 38 x 19 mm)
Probe Dimensions: 3"
Weight: 4 oz. (105 g)


  Range Resolution Accuracy
Penetration Probe -40 to 536°F
(-40 to 280°C)
0.1 ±3.6°F (2°C) below freezing
±1.8°F (1°C) for all other temperatures
Infrared Thermometer -40 to 392°F
(-40 to 200°C)
0.1 ±5.4°F (3°C) from -40 to 20°C
±1.8°F (1°C) for all other temperatures
  Emissivity fixed at 0.95
  Infrared Distance to spot Ratio: 4:1
72090-01 Food Safety Thermometer w/IR each 93.00 Add to Cart
72090-02 Food Safety Thermometer w/IR, Certified* each 126.00 Add to Cart

*Certificate of Compliance Traceable to N.I.S.T. (optional)
Specifies that the standards against which the product has been certified or calibrated were themselves calibrated by the National Institute of Standards and Technology (N.I.S.T.), or with N.I.S.T. calibrated equipment under conditions specified by N.I.S.T.

Freezer Thermometer with Temperature Alertarrow12Freezer Thermometer with Temperature Alert

Includes battery

Protect chilled and frozen samples from potential spoilage. This freezer thermometer will monitor temperatures inside your refrigerator or freezer, with sound and flashing LED lights to alert you of out-of-range temperatures.

  • Suction cup attaches the probe inside freezer/refrigerator, while the thermometer secures to the outside with hook-and loop tape
  • Large digital display shows freezer/refrigerator temperature, plus ambient temperature
  • Set refrigerator range: 35.6° to 46.4°F (2° to 8°C)
  • Set freezer range: 14.9° to -9.4°F (-9.5° to -23°C)
  • Toggle switch for refrigerator or freezer monitoring and °F or °C

Unit: 136 x 19 x 28 mm
Probe Cable: 0.9 m
Probe: 5 mm OD x 17 mm L

72094 Freezer Thermometer each 33.00 Add to Cart

FreezGuard Alarmarrow12FreezGuard™ Alarm

Alarm will Sound for Up to Three Days

Prevent costly, time consuming sample loss with this practical battery operated system. The FreeGuard™ Alarm monitors freezers and coolers and detects any variance from temperatures between -20°C and 13°C (-5°F to 55°F), ±1°C, which are preset by the user. The resonant alarm will continue to sound for up to three days if the temperature falls out of the pre-set range. Should the temperature correct itself, an LED will indicate that a variance has occurred. The alarm can be reset manually. A beep will signal when the 9V battery (not included) is low. For added protection, and extra life, a second battery can be connected. The unit mounts with self-adhesive tape or screw. Unit comes with a 3 meter probe lead, and measures 86W x 35D x 26mmH (3-5/16 x 1½ x 5-1/16). The weight without the battery is 144 g (5.1 oz).

72092-10 FreezGuard, Celsius each 176.00 Add to Cart
72092-20 FreezGuard, Fahrenheit each 176.00 Add to Cart

Stop Watch; Large Displayarrow12Stop Watch; Large Display

Very accurate with a click stop control button. Large LCD display. Rugged ABS plastic case. It counts up to 60 minutes in 1/100th second resolution. It also has a split interval clock and calculator functions. Comes complete with a leatherette case.

Measures: 3"x2½"x¼". Weight: 2.6 oz.

72091 Stopwatch each 36.00 Add to Cart


Humidity/Temp Monitorarrow12Humidity/Temp Monitor

A dual monitor for temperature and humidity in one compact and large ¾" digital display unit. Useful for desiccators, incubators, refrigerators, fume hoods, EM labs, stock rooms, clean rooms, chemical storage areas, warehouses, etc.

Recalls min/max temperature and min/max humidity readings over any time period. Stand or wall mounted. Comes with two "AAA" batteries which last one full year. Temperature range 0/50°C and 32/122°F in 1°C or F resolution with an accuracy of +/-5%RH (at 59°F to 104°F).

Dimensions: 3¾" x 2½" x ½". Weight: 2.8 oz.

72085-01 Humidity/Temp Monitor each 58.00 Add to Cart

timerarrow12Count Up-Count Down Timer

Count up or down for 100 hours in intervals of 1 second. In the count down mode its unique feature tells you how much time has elapsed after the alarm sounds. Its memory allows for the repeat of a cycle just completed. Alarm clock mode. It comes complete with a built in stand, pocket clip, button cell battery, and magnet.

Dimensions: 2¾" x 2¾" x ½". Weight: 1.8 oz. With N.I.S.T. traceable certificate of compliance.

72603 Count Up-Count Down Timer each 22.00 Add to Cart
72603-02 Count Up-Count Down Timer, Certified each 49.00 Add to Cart

Timerarrow125 Channel Timer

4 independent channels each of which counts up or down for any interval from 1 second to 100 hours. Its extra large display indicates channels that are in use. Each one has a distinctive 1 minute alarm. Automatically begins to count up to indicate time elapsed after count down reaches zero. Its memory recalls last timer setting for reuse. Also has a clock mode. Comes complete with a stand, pocket clip, and magnet.

Dimensions: 2⅞" x2½" x 9/16". Weight: 2oz.

72600 Timer, 5-Channel each 32.00 Add to Cart
72600-02 Timer, 5-Channel, Certified each 58.00 Add to Cart

Time Trackerarrow12Mini Time Tracker

Economical and easy to use

The Mini Time Tracker offers unique visual and auditory indicators. With two dials, you can adjust the total alarm time and warning time. The total alarm time ranges from 5 min to 2 hrs in 5 min increments. It will count down until the colored light glows and the alarm sounds. Adjust volume or turn off sound for visual timing. Requires three AAA batteries, not included.

41150-20 Time Tracker Mini each 39.00 Add to Cart

Talking Timerarrow12Talking Timer

A unique timer featuring a clear human voice that makes announcements which can be heard from any where within the lab. In the count-down mode, Talking Timer will announce the remaining time every hour, In the final hour, it will announce the time remaining every 10 minutes, every minute in the final 10 minutes, and every second in the final 10 seconds. A choice of 6 distinctive final alarm sounds make it easy to identify which Talking Timer has alarmed should you wish to use more than one. In the dark, in the clock mode, you can touch any button and the Talking Timer will announce the time. You also have the option of turning the voice off.

Other features include a large ¾" display with icons to indicate various modes, such as voice off/on, count-down/count-up, etc. Recalls the previous count-down setting for immediate reuse and memorizes other frequently used setting for reuse at any time. Counts up or down to 24 hours. Has a built in stand for bench top use, clips to a pocket, or sticks to any metal surface with a magnetic back. Button cell batteries are included. Measures: 3¼" x 2½" x 1". Weight 2.2 oz.

The timer also available with a N.I.S.T. traceable certificate of compliance.

72601-01 Talking Timer each 32.00 Add to Cart
72601-02 Talking Timer Certified each 58.00 Add to Cart
Tally Counter
Denominator Counter
Tally Counter
Denominator Counter

arrow12Denominator Laboratory Counters

There are many possible ways to count – from hash marks in the sand, to highly sophisticated computer programs.

For over 100 years, customers have relied on Denominator counters to simplify counting in a wide range of applications. Wherever and whenever you need to take a quick, accurate count, the durable, long-lasting, ergonomic and easy to use Denominator is the perfect solution for fast, accurate tallies.

Rugged and reliable, Denominator Tally Counters are appropriate for many Quality Control applications. Counts of rejections can be made by designated categories, either in process or at final inspection.

Customers rely on our Denominators for Traffic surveys. The counters are available in any configuration to meet your needs. They may be single- or multiple-mounted vertically or horizontally. Portable counters may be mounted on hand-held clipboards. Our Denominators are rugged for long and dependable service, yet compact and lightweight.

Denominators are used in a wide range of laboratory applications, including Hematology, Botany, Geology, Entomology, Oceanography and other medical and scientific laboratory settings. The counters may be banked or tiered, and various mounting options are available to suit your needs.

Totalizers are available for use in situations where a cumulative line total of individual counters is required. The Locking Totalizer locks all counters at every 100 counts. A release button quickly unlocks the Denominator for the next 100 counts. Individual percentages can be readily determined by dividing the counter readings by the number of hundreds counted. This feature positively prevents inadvertent over-counting. Non-Locking Totalizers are also available. They continuously accumulate the counts on the individual counters without the operator having to unlock the machine after each 100 counts.

72602-01 Single Tally Denominator each 68.00 Add to Cart
72602-02 4-Key Multi Tally Denominator each 210.00 Add to Cart
72602-03 2 Counting Units, plus Locking Totalizer each 295.00 Add to Cart
72602-04 2 Counting Units, plus Non-Locking Totalizer each 295.00 Add to Cart

arrow12Desk Tally Counter – Lab Counters

One Counting Unitarrow10A. One Counting Unit

A chrome plated with counter with a flange (2½" dia.) for desktop mounting. The recording lever is on the right side and the reset knob on the top. The counter is ideal for serial sectioning work. Four digit place.

70310 One Counting Unit Tally Counter each 12.00 Add to Cart
Two Counting Unitarrow10B. Two Counting Unit

A Counter with two counting keys each with 0 to 999 range with a single reset knob it comes with removable tabs for top identification.

70310-02 Two Counting Unit Tally Counter each 116.00 Add to Cart
TDSSix Counting Unit Tally Counterarrow10Six Counting Unit Tally Counter

A counter with five keys and one totalize unit (0 to 999), which records the total number of strokes made on other keys. When totalizing unit records 100, each figure corresponding to individual keys automatically displays percentage. Two reset knobs, removable tabs on top of counter provide area for identification of classification being counted.

70310-06 Six Counting Unit Tally Counter each 345.00 Add to Cart

Training ManualPrecise Electronic Counter and Sharpie® Markerarrow12eCount

Precise Electronic Counter and Sharpie® Marker Combined in One

Save – Power off button helps save battery life

Verify – Each count verified with a beep or LED flash

Accurate – Count up and then count down to verify count accuracy

Easy To Read – Display up to 32 counts

Memory – Keep up to 32 different counts in memory

Secure – Disable counter and use the marker to write notes and totals

Cat. No. Description Unit Price  
70309-01 eCount Each 249.00 Add to Cart

arrow12Darkroom Timer

See listing in the Photography Section.

Checktemp 2arrow12Temperature Tester; Checktemp® 4

Special attention was given to the ergonomic form of the folding Checktemp® 4 thermometer, which provides practical temperature measurements while fitting comfortably and securely in your hand. The fast responding, fold-away probe is made of high quality, stainless steel, enables angled measurements, and can penetrate semi-frozen and semi-solid samples. The LCD on the side of the handle is easy to see and read.

As you unfold the stainless steel probe, the Checktemp® 4 automatically turns ON and immediately performs a calibration test and also lets you know if your battery level is low or if your meter requires recalibration. These unique features provide the security of knowing you have accurate measurements. It also features auto shut-off.


Range 50.0 to 220°C
Resolution 0.1°C (-50.0 to 199.9°C)
1°C (200 to 220°)
Accuracy ±0.3°C ±1 digit (-20.0 to 90.0°C);
±1% F.S. ±1 (outside)
Calibration Check automatic, at startup
Probe stainless steel, with penetration tip, 117 x dia 3.5 mm (4.6 x dia 0.14")
Battery Type/Life 1.5V AA / approximately 25,000 hours of continuous use; auto-off after 8 minutes of non-use
Environment 0 to 50°C (32 to 122°F); RH max 95%
Dimensions 165 x 50 x 20 mm (6.5 x 2.0 x 0.8")
Weight 100 g (3.5 oz.)

The Checktemp® 4 comes with battery and instructions.
Factory Calibration Certificates: Checktemp® 4 can be calibrated against NIST standards.

72086-02 Checktemp® 4 Complete each 61.00 Add to Cart
72086-2C Checktemp® 4 Complete w/Certificate each 112.00 Add to Cart

Microwave Leakage Detectorarrow12Microwave Oven Leakage Detector

Use this meter for measuring electromagnetic fields of 2.45 GHZ (microwave frequency) or normal (50 MHZ to 3.5 GHZ).

It is capable of measuring the electromagnetic field radiation intensity that is produced from welding equipment, microwave ovens, and other environments, etc.

  • Ranges: 2.45 GHZ (microwave frequency) or 50 MHZ to 3.5 GHZ
  • RF power density: 0.01~2.700m W/cm2
  • Data hold (HOLD)
  • Maximum (MAX) Hold
  • Minimum (MIN) Hold
  • Zero function
  • Build in alarm setting
  • Low battery indication
  • Overload indication


Display 3¾ digits LCD, maximum reading 3999
Resolution 0.001mW/cm2
Frequency Response 50 MHz to 3.5 GHz
Sensor Single Axis
Accuracy ±2 dB at 2.45 GHz ± 50 MHz
Overload LCD display "OL"
Sample Rate 2.5 times per second
Battery 9V NEDA 1604, IEC 6F22 or JIS 006P
Battery Life Approximate 100 hours
Operating Temperature & Humidity 5°C to 40°C, below 80% RH
Storage Temperature & Humidity -10°C to 60°C, below 70%
Weight Approx. 170 g
Dimensions 130(L) x 56(W) x 38(H) mm
Accessories User's manual, 9V Battery, Carrying Case
72083-00 Microwave Oven Leakage Detector each 220.00 Add to Cart

AirChek® Badgesarrow12AirChek® Badges

Monitor vapor levels, simply and effectively.

Airchek Badges provide an innovative, simple and effective system for monitoring vapor levels, including:

  • Formaldehyde
  • Glutaraldehyde
  • Xylene
  • Toluene
  • Isopropanol

The badges are simply clipped on to the technician's clothing and a record is kept of name, location and time, providing continuous sampling for personal monitoring and allowing the measurements required under Government regulations.

One badge provides continuous sampling over 8 hours. A second badge can be used to supply information for analysis of 15-minute peak exposure periods.

64472-10 AirChek® Badge, Formaldehyde 6/pk 456.00 Add to Cart
64472-20 AirChek® Badge, Glutaraldehyde 6/pk 470.00 Add to Cart
64472-30 AirChek® Badge, Xylene 6/pk 412.00 Add to Cart
64472-40 AirChek® Badge, Toluene 6/pk 440.00 Add to Cart
64472-50 AirChek® Badge, Isopropanol 6/pk 440.00 Add to Cart

Vacuum Pick-up and Pen Vac arrow13arrow13