氯化银晶体光学片, Silver chloride crystal optic disc

氯化钠晶体光学盘, Sodium chloride crystal optic disc

溴化钾晶体光学长方体块, Potassium bromide crystal optic rectangle

驼绒毛刷(3/pkg), Camel Hair Brushes (3/pkg)

玛瑙研钵和棒, Agate Mortar and Pestle

不锈钢小瓶, Stainless steel vial

空气敏感样品管, Air Sensitive Sample Tubes

USA标准分子筛, USA Standard Sieve

美国标准分子筛, USA Standard Sieve

美国标准分子筛, USA Standard Sieve