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Dimethoate Solution in Hexane
EPA Method 8015C Internal Standards Mixture (有证书)
三种氯霉素类混标 BePure-33148XM
Vitamin B3/B5 [Nicotinamide]
First Standard® 甲苯中甲基嘧啶磷溶液,100μg/mL
水杨酸高孟酯溶液,100ppm
丙酮中7种苯氧羧酸类农药混标(适用国标:HJ1022-2019土壤和沉积物苯氧羧酸类农药的测定-高效液相色谱法)
Aldicarb-d3 Sulfone
2.2'.3.4.4'.5'-Hexachlorobiphenyl Solution 100ug/ml in Hexane (无证书)
Titanium - 5% HNO3 + 2% HF(有证书)