This 30/31 liter dewar is the biggest we offer on the industrial rentals. It is a great tank to hold larger amounts of liquid nitrogen for those large projects or experiments. This tank can hold up to 6 months depending on the quality of the vacuum. These tanks have been tested at 8 week intervals in a working environment so the actual hold time will vary from tank to tank.
*We offer many different brands and sizes of dewars. The actual dewar you receive may not look like the pictured dewar.