铬酸离子, Chromate

亚硫酸根,Quant® 测试条, Sulfite

光学助熔剂110, Spectroflux 110

连续校准确认(CCV)标准试剂盒, Continuing Calibration Verification (CCV) Standards Kit

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

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

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

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

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