地面和废水污染标准溶液5, Ground & Waste Water Pollution Standard Solution 5

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

氟化钡晶体光学盘, Barium fluoride crystal optic disc

溴化钾晶体光学盘, Potassium bromide crystal optic disc

溴化钾晶体光学盘, Potassium bromide crystal optic disc

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

氟化钙晶体光学长方体, Calcium fluoride crystal optic rectangle

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

溴化钾快速压片装置, KBr Quick Press Kit with 7mm die set

一次性红外光谱片, Disposable IR cards