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Electron Microscopy Sciences

Cryo Supplies and Accessories

arrow13Cryo Dewars, Liquid Nitrogen Flasks, and Cryo Canes

nalgene polyethylene dewar flaskarrow12Nalgene® Polyethylene Dewar Flask

High density polyethylene Dewar Flask with vented and insulated HDPE covers. They are unbreakable, chemically resistant, and withstand temperatures from -196 to 100°C (-321 to 212°F). Double walls are filled with foamed urethane to minimize heat exchange. May be used for short term storage of dry ice-solvent, liquid nitrogen, or for use as a hot bath. They are ideal for storing frozen biological specimens. All available sizes feature molded-in-ribs for stability and a carrying handle on the 1, 2, and 4 liter sizes.

Catalog # Capacity L Overall height mm/in Mouth I.D. mm/in Price  
62038-01 1 299/9 95/3 256.00 Add to Cart
62038-02 2 260 121 262.00 Add to Cart
62038-04 4 324 146 272.00 Add to Cart
62038-10 10 457 197 475.00 Add to Cart

Replacement Covers for Dewar Flasks

Catalog # For Dewer No. Qty    
62039-01 62038-01 5/pk 142.00 Add to Cart
62039-02 62038-02 5/pk 133.00 Add to Cart
Mini Foam Cryo Dewar
62098-01, Mini
Tall Foam Cryo Dewar
62098-05, Tall
Small Foam Cryo Dewar62098-02, Small
Standard Foam Cryo Dewar
62098-03, Standard
Large Foam Cryo Dewar
62098-04, Large

arrow12Foam Cryo Dewars

The preferred containers for handling liquid nitrogen and cryogenic materials

These foam dewars are safe, durable, and have superior insulating properties compared to stainless or glass, at a fraction of the cost!

Foam dewars use fine closed cell foam for insulation, which is chemically inert and mechanically durable enough to be exposed directly to liquid nitrogen, without leaking or degrading.

Also, due to the lower thermal mass, foam vessels cause less liquid nitrogen boiloff when filled, and will accumulate less frost. This results in less liquid nitrogen being used.

All vessels feature a foam lid.




Catalog #
Cylidrical Cavity Measurements
62098-01 Mini 130-175 ml 2" Dia x 3.5" Depth
62098-02 Small 500 ml 4.5" Dia x 2.8" Depth
62098-03 Standard 800 ml 5.8" Dia x 2.8" Depth
62098-04 Large 1400 ml 6.3" Dia x 3.8" Depth
62098-05 Tall 1800 ml 3.5" Dia x 12.3" Depth



62098-01 Foam Cryo Dewar Mini w/lid each 50.00 Add to Cart
62098-02 Foam Cryo Dewar Small w/lid each 85.00 Add to Cart
62098-03 Foam Cryo Dewar Standard w/lid each 100.00 Add to Cart
62098-04 Foam Cryo Dewar Large w/lid each 160.00 Add to Cart
62098-05 Foam Cryo Dewar Tall w/lid each 180.00 Add to Cart

arrow12Narrow Mouth Dewars

Narrow Mouth DewarsLab grade dewars. Made from borosilicate glass and vacuumed to 10-7 torr, without pads between walls, eliminating heat transfer for maximum efficiency. They come with low evaporation stopper and weighted base.

Spherical Dewar Flask

Metal Casting does not extend the full length of the flask. Florence flask design, offers the most efficient way of holding liquid nitrogen. Available with an optional Fiber Glass Caddie for safety, easy carrying, and decanting liquids from the above flasks.

Catalog # Vol. ml Neck (mm) Depth (mm) Price
  I.D. O.D. Int. Ext.    
62019-20 2 L 32 174 335 386 625.00 Add to Cart
62019-50 5 L 53 255 370 456 875.00 Add to Cart
62019-22 Dewar Caddie for 62019-20 each 450.00 Add to Cart
62019-52 Dewar Caddie for 62019-50 each 475.00 Add to Cart

Low Form Shallow Hemispherical Dewars
61886 Series, Hemispherical Dewars

Low Form Shallow Cylindrical Dewars
61887 Series, Cylindrical Dewars

arrow12Low Form Shallow Dewars

Low Form Shallow Dewars permit essential operations that are not practical with standard cylindrical or spherical Dewars.

These operations include:

  • Insertion of small flasks in Dewar
  • Agitation in flask with magnetic stirrer
  • Rapid freezing and recovery of tissue/organ specimens
  • Tempering of stirring rods, pestles and other small objects

The protective aluminum bases on both the hemispherical and cylindrical dewar styles extend the full height of the Dewars.

Note that protected vacuum tip-off tubulations are offset to the side to minimize space between the Dewar bottoms and magnetic stirrers.

The hemispherical line has been expanded to provide additional Dewars to fit larger flask sizes.


arrow12Hemispherical Dewars


Cat. #


A 61886-01 150 ml,
Full Base
80 106 66 100 Full
278.00 Add to Cart
B 61886-02 275 ml,
Full Base
100 132 75 250 Full
350.00 Add to Cart
C 61886-03 600 ml,
Full Base
140 165 95 500 Full
368.00 Add to Cart
D 61886-04 1000 ml,
Full Base
160 186 119 1000 Full
440.00 Add to Cart
E 61886-05 2000 ml,
Full Base
194 240 133 2000 Full
532.00 Add to Cart
arrow12Cylindrical Dewars


Cat. #


A 61887-01 220 ml,
Full Base
65 87 93 75 Full
448.00 Add to Cart
B 61887-02 150 ml,
Full Base
80 101 66 100 Full
312.00 Add to Cart
C 61887-03 350 ml,
Full Base
80 101 117 100 Full
328.00 Add to Cart
D 61887-04 850 ml,
Full Base
130 160 110 500 Full
395.00 Add to Cart
E 61887-05 2500 ml,
Full Base
170 210 185 1000 Full
685.00 Add to Cart

Lab Grade Dewarsarrow12Lab Grade Dewars

These lab grade dewars are rated the most efficient glass Dewars in the World! The superior ranking is due to the rigid quality control when manufacturing, along with superior design and manufacturing features.

  • Weighted bases on all models for stability
  • Supplied stopper tops off Dewars to minimize evaporation
  • Evacuation tip completely shielded for increased protection
  • Optional full length metal housing on most models for added protection
  • No pads between walls on cylindrical Dewars eliminating this heat transfer potential
  • Efficiency assured by rigid bakeout and evacuation control (evacuated to 10-5 torr or better)

The protective aluminum bases on both styles extend the full height of the Dewars.

Note that protected vacuum tip-off tubulations are offset to the side to minimize space between the Dewar bottoms and magnetic stirrers.

All Wide Mouth models can be obtained with an exterior metal housing that extends nearly to the top rim of the Dewar (a slight extension of the glass Dewar facilitates pouring). This housing adds the safety of metal to the efficiency of glass, particularly important in handling operations.

Lab Grade Dewars with a narrow mouth are ideal for temporary storage or for room-to-room transfer. Standard features include low evaporation cork stopper, fully shielded evacuation tip, weighted bases and partial aluminum base.

All Lab Grade Dewars are manufactured of borosilicate glass for liquid nitrogen service. A sturdy mesh cover facilitates a firm grip, provides a cushion against bumping and increases protection.


Cat. #



A 61888-01 350 ml,
Std Base
70 86 157 Cylindrical,
Wide Mouth
Mesh 154.00 Add to Cart
B 61888-02 350 ml,
Full Base
70 86 157 Cylindrical,
Wide Mouth
162.00 Add to Cart
C 61888-03 1900 ml,
Std Base
120 150 252 Cylindrical,
Wide Mouth
Mesh 385.00 Add to Cart
D 61888-04 1900 ml,
Full Base
120 150 252 Cylindrical,
Wide Mouth
402.00 Add to Cart
E 61888-05 1000 ml,
Std Base
70 86 337 Cylindrical,
Wide Mouth
Mesh 166.00 Add to Cart
F 61888-06 1000 ml,
Full Base
70 86 337 Cylindrical,
Wide Mouth
175.00 Add to Cart
G 61888-07 4300 ml,
Std Base
143 178 365 Cylindrical,
Wide Mouth
Mesh 495.00 Add to Cart
H 61888-08 4300 ml,
Full Base
143 178 365 Cylindrical,
Wide Mouth
512.00 Add to Cart
I 61888-09 665 ml,
Std Base
70 86 241 Cylindrical,
Wide Mouth
Mesh 156.00 Add to Cart
J 61888-10 665 ml,
Full Base
70 86 241 Cylindrical,
Wide Mouth
162.00 Add to Cart
K 61888-11 2000 ml,
Std Base
158 184 386 Spherical,
Narrow Neck, 32 I.D.-64 O.D.
Alum 850.00 Add to Cart
L 61888-12 2000 ml,
Full Base
216 255 456 Spherical,
Narrow Neck, 53 I.D.-79 O.D.
Alum 796.00 Add to Cart

Dewars with Handlesarrow12Lab Grade Dewars with Handles

This handled Dewar vacuum flask is perfect for temporary storage and liquid gas service, especially Liquid Nitrogen. With a wide-mouth design and a fully silvered borosilicate glass inner flask, it incorporates the convenience of a coated handle and full aluminum base on the most popular cylindrical model sizes from the Lab Grade line. All models use fitted polyethylene caps for extended holding.

  • Cylindrical, wide mouth
  • Vacuumed to the -5 torr for efficiency
  • The Dewar lip is extended to facilitate pouring
  • Bottom of Dewar base has a cushioned rim for added stability
  • Polyethylene stopper, specially vented, minimizes evaporation
  • Aluminum metal housing extends full length of Dewar for added protection


Cat. #



A 61889-01 350 ml, Full Base, Handle 70 86 157 Full
220.00 Add to Cart
B 61889-02 1900 ml, Full Base, Handle 120 150 252 Full
455.00 Add to Cart
C 61889-03 4300 ml, Full Base, Handle 143 178 365 Full
570.00 Add to Cart
D 61889-04 1000 ml, Full Base, Handle 70 86 337 Full
212.00 Add to Cart

Dewars with Handlesarrow12Dewar Accessories


Lightweight and sturdy, the Caddie for Part Numbers 61888-11 and 61888-12 now comes in Aluminum.

These prove ideal for local carrying or decanting Lab Grade Spherical Dewars.

They can be used repeatedly by simply removing bottom retainer, inserting a new Dewar, and replacing the retainer. Gaskets help center Dewar and hold it firmly in place. The aluminum top snaps into place.

Dewars with HandlesStoppers

Lab Grade Dewars are supplied with stoppers for both the wide mouth and narrow mouth cylindrical Dewars.

Need another one? Replacement stoppers can be purchased separately. Use the Dewar model number to identify the stopper you need.

61890-01 Caddie for 61888-11 each 338.00 Add to Cart
61890-02 Caddie for 61888-12 each 375.00 Add to Cart
61890-03 Stopper for 61888-01, 61888-02, 61888-05, 61888-06, 61888-09, 61888-10, 61889-01, 61889-04 each 13.00 Add to Cart
61890-04 Stopper for 61888-03, 61888-04, 61889-02 each 14.00 Add to Cart
61890-05 Stopper for 61888-07, 61888-08, 61889-03 each 14.00 Add to Cart

cryogenic liquid nitrogen transfer vesselarrow12Cryogenics Liquid Nitrogen Transfer Vessels

Thermo-Flask provides safe extended temperature retention for specimens stored in liquid nitrogen or solid CO2, and thus have a broad range of applications in industrial, educational, and clinical fields.

Thermo-Flask features borosilicate glass inner liners which have been evacuate to 1x10-5 mm of Hg to provide maximum coolant retention.

Example of Possible Retention Times at 80% Full Liquid Nitrogen Retention:




Stainless Steel Thermo-Flask with Handle and Lidarrow101. Stainless Steel Thermo-Flask® with Handle and Lid
  • Durable, corrosion-resistant stainless steel exterior construction with carrying handle and vented lid secured by toggle clamps
  • Recommended for the safe transport of liquid nitrogen
Catalog # Capacity liters I.D. inches O.D. inches Height inches    
61891-01 1.0 3⅓ 4⅝ 9 395.00 Add to Cart
61891-02 2.0 5⅝ 10½ 433.00 Add to Cart
61891-04 4.5 6 13¾ 621.00 Add to Cart
TDSShallow Wide Mouth Flasksarrow102. Shallow Wide Mouth Flasks
  • Convenient dish-shaped design is ideal for bench top use with crushed ice, dry- ice, or alcohol
  • Also great as a hot liquid container
  • Stainless steel jacket and cushioned base will provide years of trouble-free use
  • Excellent for use as a cold trap
Catalog # Capacity (ml) I.D. inches O.D. inches Height inches    
61892-05 500 6 350.00 Add to Cart
61892-10 1000 5⅜ 7 4⅛ 420.00 Add to Cart
61892-19 1900 6 438.00 Add to Cart
enameled steel thermo flaskarrow103. Enameled Steel Thermo-Flasks®
  • Safe storage of liquified gases, temperature retention, and versatility at an economical price
  • Enameled steel exteriors, borosilicate glass liners and cushioned bases
  • 62029 includes an insulated lid and fold-down carrying handle
  • Ideal for cold traps
Without lids and carrying handles.
Catalog # O.D. inches I.D. inches Height inches Capacity liters    
62020 1⅝ 0.2 160.00 Add to Cart
62022 2⅜ 11¼ 0.65 282.00 Add to Cart
62023 3 11.0 1.1 285.00 Add to Cart
62024 5 11⅜ 1.5 322.00 Add to Cart
The following model includes a lid and handle.
62029 9⅛ 8 17⅛ 10.0 995.00 Add to Cart

Vial Canesarrow12Cryogenic Vial Canes

Organize cryogenic samples in Dewars

Aluminum canes hold vials for freezer storage or immersion in LN2 Dewar. For use in liquid phase, use approved vials only. Canes bend to fit all major cryogenic vial brands.

Catalog # Length Vials Vial Size Qty    
61067-03 290 mm 5 Up to 2.0 ml 12/pk 33.00 Add to Cart
61067-13 300 mm 6 Up to 5 ml 12/pk 33.00 Add to Cart

cryo storage canesarrow12Cryo Storage Canes

Made from aluminum, 11-5/16" (28.7 cm) long. Firmly holds most Cryo Vials for liquid nitrogen storage. It stores up to 6 standard cryo vials.

61080-10 CryoStorage™ Cane 10/pk 28.00 Add to Cart
61080-50 CryoStorage™ Cane 50/pk 95.00 Add to Cart

cryoflex tubingarrow12CryoFlex® Tubing

CryoFlex® is a hollow tube from polyethylene which is useful for encasing and sealing cryo vials, when storing samples immersed in liquid nitrogen. The tubing measures 9/16" diameter x 19-11/16" long (1.4 x 50 cm)

61083-10 CryoFlex® Tubing 15/pk 15/pack 106.00 Add to Cart


Clear polyvinyl chloride. Ideal for enclosing Cryo Storage Canes for extra security during handling and storage. Fits over most other canes. Will not become brittle during freezing or thawing. Will not shred or tear after repeated use like cardboard. Length: 10-13/16" (27.5cm L).

61082-10 Cryo Sleeve® 100/pack 98.50 Add to Cart
cryogenic grid storage box

arrow12Cryogenic Grid Storage Boxes

These specimen grid boxes are tools for storing or transferring cryogenic TEM specimen grids.

  • Four diamond shaped slots
  • Non-static clear covershield held in place with stainless steel screw, which is tapped in the center of the box
  • Box fits the FEI Vitrobot™, Gatan 626™, Gatan 3500™
  • Available with lid, pin-type lid, or without lid
71166-10 Cryo Grid Box, Round, w/Lid each 9.95 Add to Cart
71166-10-W Cryo Grid Box, Round, w/Lid, White each 9.95 Add to Cart
71166-20 Cryo Grid Box, Square, w/Lid each 9.95 Add to Cart
71166-30 Cryo Grid Box, Round, wo/Lid each 7.50 Add to Cart
71166-40 Cryo Grid Box, w/Pin Type Lid for FEI Vitrobot each 19.00 Add to Cart
71166-50 Cryo Grid Box, w/Pin Type Lid each 13.00 Add to Cart
71166-60 Cryo Grid Box, w/Lid, Sq for Gatan CT3500 each 18.50 Add to Cart

Gripper Tool for Cryo Grid Boxesarrow12Gripper Tool for Cryo Grid Boxes

Use this tool to open the lid of our cryogrid box (EMS Cat. #71166-40). It features a spring loaded vise that grips the lid securely and a ribbed barrel for ease in unscrewing the lid. Made of high quality aluminum, it can be used with liquid nitrogen. Can also be used to carry the cryo grid box.

71166-SP Gripper Tool for Cryo Grid Boxes each 36.00 Add to Cart

cryogenic grid handling toolarrow12Cryogenic Grid Box Handling Tool

This tool has one end which is threaded and fits into the center hole of the Cryogenic Grid Storage Box (where the screw goes in to secure the lid) for moving the box in and out of the cryogenic chamber.

71165-50 Cryogenic Grid Box Handling Tool each 19.95 Add to Cart

Vitrobot Filter Paperarrow12Vitrobot™ Filter Paper

This special Filter Paper has an outer diameter of 55 mm, with an inner diameter of 20 mm. Made from Grade 595 paper.

71166-65 Vitrobot™ Filter Paper 100/pk 38.00 Add to Cart

Brass Planchetsarrow12EMS Freezer Hats

Made from brass, these planchets are used for high pressure freezing. They are able to be stacked, allowing for greater depth. The measurements of the planchets are as follows: Planchet A has 2 chambers at 0.1mm deep and 0.2mm deep. Planchet B has 1 chamber at 0.3mm deep.

71167-01 Brass Planchet A, 2 Chambers 50/pk 180.00 Add to Cart
71167-02 Brass Planchet B, 1 Chamber 50/pk 203.00 Add to Cart
CryoEM Puck
  • 71168a
  • 71168b
  • 71168c
  • 71168d
  • 71168e
  • 71168f
  • 71168g
  • 71168h
  • 71168i

arrow12EMS Cryo Pucks

Organized storage and transport for Cryo-EM specimen grids under cryogenic conditions

  • 12 wells per puck for Cryo Grid Boxes
  • Each puck has a unique alpha-numeric code for easy identification
  • Indexed wells for sample tracking
  • Holds round Cryo Grid Boxes
  • Puck depth accomodates pin type lid style Cryo Grid Boxes
  • When using Cryo Grid Boxes with flat-style lids, you can store up to 24 Cryo Grid Boxes per puck
  • Special tweezer slots allow easy and secure removal of Cryo Grid Boxes
  • Shelved shipping Cane holds up to seven pucks
  • Shelved Storage Cane
71168-01 EMS Cryo Pucks Complete Set
(7) EMS Cryo Pucks
(1) Shelved Puck Shipping Cane
(1) Shelved Storage Cane
(1) Angled Cryo-Tongs
(1) Protective Storage Case
set 2,397.00 Add to Cart
71168-02 EMS Cryo Pucks each 110.00 Add to Cart
71168-07 EMS Cryo Pucks 7/pk 730.00 Add to Cart
71168-08 EMS Cryo Puck Storage Case each 290.00 Add to Cart
71168-09 Shelved Storage Cane (holds 10 pucks) each 400.00 Add to Cart
71168-10 Double Puck Loading Dewar with Lid each 325.00 Add to Cart
71168-11 Bent Cryo Tong each 142.00 Add to Cart
71168-12 Shelved Puck Shipping Cane each 892.00 Add to Cart
71168-13 Cryo Express Dry Shipper with Case each 1,450.00 Add to Cart

Aluminum Base Moldsarrow12Aluminum Base Mold

  • Extra large square base mold
  • Made from aluminum, offering optimal thermal conductivity
  • Features a well polished surface for easy block removal
  • Will accomodate most samples
  • Interior corner radius: .250" (6.35 mm)
  • Interior dimensions: 1.97 x 1.97 x 1.18" (50 x 50 x 30 mm)
  • Exterior dimensions: 2.5 x 2.5 x 1.375" (63.50 x 63.50 x 34.93 mm)
62547-15 Aluminum Base Mold each 40.00 Add to Cart

disposable plastic Cryomoldsarrow12Tissue-Tek® Cryomold®; Sakura Finetek

These disposable plastic Cryomolds produce a uniformly shaped flat surface specimen block with tissue freezing medium (O.C.T.) for frozen sectioning, Standard Cryomold fits directly into Cryobar® freezing wells of the Tissue-Tek® II microtome/cryostat. Use a Cryomold® adapter to adapt smaller biopsy and intermediate Cryomold® molds to freezing wells on the Cryobar® unit.

Not for sale overseas
Catalog # Tissue-Tek Description Pack Price  
62534-25 4557 Standard, 25 x 20 x 5 mm 100/pk 23.50 Add to Cart
62534-10 4565 Biopsy, 10 x 10 x 5 mm 100/pk 23.50 Add to Cart
62534-15 4566 Intermediate 15 x 15 x 5 mm 100/pk 23.50 Add to Cart

Dry Ice Makers arrow13arrow13