fine stainless steel,and its capacity is 18L.it applies to all health cares,laboratories,scientific research,food ... ,50HZPower2KVA It adopts fine stainless steel,and its capacity is 18L.it applies to all health cares,laboratories,scientific research,food ... appliance,dressing,glassware,Solution,food. (YX-280A) Stainless Steel Portable Sterilizer