氟化钙晶体光学盘, Calcium fluoride crystal optic disc

氯化钾晶体光学盘, Potassium chloride crystal optic disc

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

氯化钠晶体光学长方体块, Sodium chloride crystal optic rectangle

玛瑙研钵和棒, Agate Mortar and Pestle

微孔样品管, Thin-Bore Sample Tube

美国标准筛, USA Standard Sieve

美国标准分子筛, USA Standard Sieve

Al-23管(两端开口);外径 (mm), Al-23 Tube (both ends open);OD (mm)

Al-23 Tube