Two independent, 2-stage mechanical pumps, one for degas and one for analysis. Ultimate vacuum 5 E-3mmHg. Patented isothermal jackets maintain cryogen level on sample tube during analysis while evaporation of cryogen occurs. Liquid nitrogen can be replenished to extend analysis without affecting accuracy.
Tubes are borosilicate glass.
In keeping with a policy of ongoing product improvement, specifications are subject to change without notice.