Spare mortar bowl, each

A stainless steel mortar is suspended by three brackets above a stainless steel bowl which holds the liquid nitrogen. The bowl is nested in a well insulated polyethylene housing. The 102mm insulated handle is removable for saving space. The housing measures 165mm in diameter, 114mm high, and has three suction cup-feet. Now frozen tissue samples can be ground without the hazard of liquid nitrogen droplets flying into personnel.