Product Description
The Dilvac Glass Dewar flasks in standard style with handle and latching lid utilize a proven borosilicate glass inner vacuum flask in hygienic satin finish stainless steel container to be rust-free, anti-corrosive, all hygienic and strong. These Dewars have an all stainless steel lid with self-contained insulation and toggle-clamps secure the lid to the body for safe transportation.
Applications
Designed for safe use and transportation of liquid gases in any setting:
- Laboratory
- Industrial
- Education
- Liquefied gases
- CO2 Handling
- Freezing mixtures
- Storage and preparation of specimens
Features
- Borosilicate glass inner vacuum flask for years of reliable service.
- Satin finish stainless steel container is rust-free, anti-corrosive, hygienic and strong.
- Lid clamps for safe transportation,
- Vented lid for safe pressure release,
- Safe and efficient for handling LN2, LOx or dry-ice,
- Available in 4 capacities/sizes.
Specifications
- Dewar Material: silvered and vacuum pumped borosilicate glass,
- Container Material: satin finish stainless steel,
Part No. |
Capacity (L) |
Overall Diam. |
Overall Height |
Internal Diam. |
Internal Depth |
Holding Time (approx.) |
SS111 | 1.0 | 4.5" | 9" | 3.3" | 7.2" | 24 Hrs. |
SS222 | 2.0 | 5.6" | 10.6" | 4.2" | 8.1" | 38 Hrs. |
SS333 | 4.5 | 7.2" | 13.8" | 5.9" | 11.0" | 72 Hrs. |
SS700 | 7.0 | 9.6" | 13.2" | 7.9" | 11.2" | 90 Hrs. |
- Holding time:
- Approximate and relative to usage.
- Intended only to provide a comparison of times for a Dewar with lid to empty completely after 90% fill with Liquid Nitrogen (LN2).
- This time will vary with ambient temperatures, frequency of lid removal, handling of contents, and the mass of the material being frozen.
- Vapor Phase: Dewars may be used as vapor phase storage while almost empty of Liquid Nitrogen. Liquid Nitrogen will boil off to become a very low temperature gas and the Dewar with lid on will hold vapor phase nitrogen gas at temperatures of -160oC to -140oC.
- Dry Ice (Frozen solid CO2):
- Used with dry-ice (solid CO2) the Dewar will maintain temperature of approximately -90oC.
- Holding times for CO2 are about 25% longer than those listed above for LN2.