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Spearlab Cryogenic Foam Dewars
Spearlab Cryogenic Foam Dewars
Spearlab Cryogenic Foam Dewars
From left to right: HR4-674, HR4-675, HR4-673

Spearlab Cryogenic Foam Dewars
HR4-673 - Spearlab Cryogenic Foam Dewar (800 ml)
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Spearlab Cryogenic Foam Dewars
HR4-675 - Spearlab Cryogenic Foam Dewar (2 liter)
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Applications
Cryocrystallography
Features
Each dewar is supplied with a lid
Proprietary foam construction
Standard (800 ml), Large (1400 ml) and Tall (2 liter)
Reduced ice formation on dewar lip
Easier to dry
Foam construction reduces slipping
Description
Spearlab Cryogenic Foam Dewar (800 ml) - Standard: The standard foam dewar shape is circular, with a protruding handle, so that it resembles a large teardrop. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 5.8" in diameter by 2.8" deep, so that it easily holds 800 ml of liquid nitrogen.

Spearlab Cryogenic Foam Dewar (1400 ml) - Large: The large foam dewar shape is circular, with a protruding handle, so that it resembles a large teardrop. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 6.3" in diameter by 3.8" deep, so that it easily holds 1400 ml of liquid nitrogen. Overall height is approximately 6" without cover and the width is 9" on the short axis and 11" on the long axis. Cover approximately 0.5" tall x 9" diameter.

Spearlab Cryogenic Foam Dewar (2 liter) - Tall: The tall foam dewar shape is a tapered octagon on the outside with a cylindrical interior. The tapered octagon features a wide, stable base. Each dewar is supplied with a matching foam lid to insulate the contents from ambient air. Dimensions of the cylindrical cavity in this vessel are 3.5" in diameter by 12.5" deep, so that it holds approximately 1,970 ml of liquid nitrogen. The outside dimensions of the tall dewar are 15.25" tall with a 6.25" wide top and a 7.75" wide base (measured on the flats of the octagon). The cover is 6.5" in diameter and 0.5" thick.

The patent pending design of the Spearlab Cryogenic Foam Dewar makes it easy to handle and safer to use than a traditional low profile glass dewar. Also, because of its lower thermal mass, a foam vessel will cause less boil off when it is filled with liquid nitrogen. Additionally, the dewar will accumulate less frost during regular use. The end result is that less liquid nitrogen is consumed.
ITEMS
CAT NO NAME DESCRIPTION
HR4-673 Cryogenic Foam Dewar (800 ml) - Standard each
Price Quantity
$99.00
CAT NO NAME DESCRIPTION
HR4-674 Cryogenic Foam Dewar (1400 ml) - Large each
Price Quantity
$149.00
CAT NO NAME DESCRIPTION
HR4-675 Cryogenic Foam Dewar (2 liter) - Tall each
Price Quantity
$159.00
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