Nitrogen small portable containers

Liquid nitrogen is shipped and stored in small portable containers (dewar flasks), which hold quantities ranging from 1 gal to 25 gal (3.8 L to 95 L) or more. These containers are encased in shells and are heavily insulated they maintain the liquid at atmospheric pressure. 

Other types of small portable vessels find applications in the laboratory or in small workshops. They may be constructed of glass, metal, or a combination of the two. The all-glass dewars are typically evacuated to about 1.3 X 10 MPa and most are coated with a thin silver film in the vacuum space to minimize radiant heat transfer. The size of these glass containers usually ranges from 0.04 to 0.3 m in diameter and up to 2 m in length. Contemporary metal dewars have either an aluminum or stainless steel inner product container with MLI in the vacuum space. Loss rates from 1.5% to 4% per day are typical. However, high performance portable Uquid nitrogen vessels like the ones iUustrated in Fig. 7.39 have loss rates as low as 0.3 % per day. 

DS2, 1 1/2 Quart (including ABC-M11). The Mil is used to decontaminate small areas that soldiers must touch. It is a steel container with an aluminum spray-head assembly and a nitrogen gas cylinder that provides the pressure. It is filled with 1-1/3 quarts of DS2, which is sufficient to cover 135 square feet. The ABC-M11 is an equipment-mounted, standard U.S. Army decontaminating apparatus used for operator spray-down decontamination. The item is man-portable (weight of approximately 5 pounds). The ABC-M11 has been replaced by the M13. 

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