4ml Vial Describition 4ml vial for many usage ISO or YBB, USP type I level Clear and Amber color Low boro or neutral borosilicate glass tube 1ml, 2ml, 3ml, 4ml, 5ml, 7ml, 8ml, 10ml, 12ml, 15ml, 20ml, 25ml, 30ml available High quality and good chemical and physcial stability