| 分子式 |
重铬酸钾滴定溶液标准物质
编号:GBW(E)082928 CAS号:7778-50-9 规格:500mL 浓度:0.25(氧化量浓度C( 1/6K2Cr2O7)(mol/L)(20?C))
甲醇中硫线磷溶液
编号:1ST20193-1000M CAS号:95465-99-9 规格:1mL 浓度:1000μg/mL
丙酮中甲苯氟磺胺溶液
编号:1ST21223-100B CAS号:731-27-1 规格:1mL 浓度:100μg/mL
正己烷中2,2',4,5,5'-五氯联苯溶液
编号:1ST3700-100H CAS号:37680-73-2 规格:1mL 浓度:100μg/mL
毒死蜱
编号:CPF-281200 CAS号:2921-88-2 规格:50mg 浓度:98.9%
甲醇中磺胺对甲氧嘧啶-D4溶液
编号:1ST4037-100M 规格:1ML 浓度:100μg/mL