produced by high boro 3.3 glass or low boro glass clear low expansion linear-coefficient,high resistance against chemical attack Test Tube,cylindrical bottomproduced by high boro 3.3 glass or low boro glass clear low expansion linear-coefficient,high resistance against chemical.CodeDescription(mm)DimensionsPackingRK120013ml 10x75mm, soda lime glass0.8mm thick wall250PCS/inner box, 2000PCS/ ...