Produced by high boro 3.3 glass or low boro glass(neutral glass/disposable glass) ,clear,low expansion linear-coefficient,high resistance against chemical attacks .
1231 Test tube,without rim boro 3.3 glass or low boro glass/neutral glass/disposable galss
1232 Test tube,with rim boro 3.3 glass or low boro glass/neutral glass/disposable galss
Flat bottom and printting also available!
Thanks for your co-operation in advance and welcome to your early enquiry list!