玻璃试管规格较多，一般外径从5mm-80mm，长度50-500mm。款式有平口、圈口、喇叭口，底部有圆形的和平底的两种。从试管的材料上来讲分为普通中性料玻璃管和采用高硼硅玻璃管吹制的两种。透明，无气泡，无杂质，耐腐蚀、耐高温，不冷爆，出口内销，质量好，无退货，包装要求高，厂价直销，量大电议面议均可
The glass tube and specifications, so general outside diameter from 5 mm-80 mm, length 50-500 mm. Design have even mouth, circle, bellbottom mouth, bottom are round the peace of the two. From the material test tube into common neutral material for glass tube and using high high-borosilicate glass pipe blown two kinds. Transparent and no bubble, without impurities, corrosion resistant, high temperature resistant, is not cold blasts, export sales in domestic market, quality good, no return, packing the demand is high, priced direct marketing, quantity electricity discussion all can be negotiable