Tartaric acid,0.5000 %w/v in 4% Hydrochloric acid

L-酒石酸

ASTM D5441甲基叔丁基醚(MTBE)污染物标准品,高浓度, ASTM D5441 MtBE Contaminant Std. High Conc.,1.0 % w/w in MtBE

ASTM D5441 定量分析标准品(29组分于正十二烷中), D-5441 Quantitative Standard,Varied conc. in n-Dodecane

ASTM D5443 烃检测混标(28组分), Hydrocarbon Test Mixture,Varied conc. by weight

ASTM 5580 芳烃标准品2, ASTM 5580 Aromatics Calibration Solution,Varied conc. by %w/w

氮校准套标, Nitrogen Calibration Set

汽油中芳烃无内标的校准曲线, ASTM/EPA Gasoline Refinery Standards

标准品, Daily Quality Control Standard,Varied conc. by %w/w

1-(2-吡啶基)哌嗪衍生物4,4'-MDI, 1-(2-Pyridyl)piperazine derivative of 4,4'-MDI ,2280 μg/mL in DMSO

1,2,3,6,7,8-六氯二苯并-对-二恶英, 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin