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Ethyl phthalylethylglycolate
Carbophenothion-methyl oxygen-analogue,10ng/ul 标准品
Carbon Dioxide in Nitrogen (Nominal 1.5 % mol/mol)
氯己定溶液,100ppm
Folpet Solution 100ug/ml in Toluene
First Standard® 丙酮中35种农药混标溶液,10μg/mL
4-Methyl-2-nitrophenol
炔草酯
去羟基洛伐他汀溶液, 100ppm
异戊酸