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苯并(a)蒽
ASTM D5580 检测石油中苯系物混标 标准品
2,2',3,3',4,5,5',6,6'-Nonachlorobiphenyl 标准品
氟氰戊菊酯(氟氰菊酯)
GC测试用标准溶液(TCD检测器用)
Cholesteryl-2,2,3,4,4,6-d6-octadecanoate 标准品
2,4-Dichlorophenyl-3-methyl-4-nitrophenyl ether 标准品
Baytan (TM) Solution 100ug/ml in Toluene
7?,17a-Dimethyl-5?-androstane- 标准品
噻螨酮