... , 200, 300, 400,500,,600, (4)Joints:14# 19# 24# features:(1)item:Condenser reflux(2)joints:14# 19# 24#(3)material:heat resistant 3 ... .3 borosilicate glass(4)all types:150/14,14 200/14,14 200/19,19 ... 300/19,19 400/19,19 200/24,24 300/24,24 400/24,24 500/24,24 300 ...