全部 源叶

全部 2ml 1ml 1.2ml 5ml 250mg 1g 5g 100mg 10mg 25mg 100ml 25ml 1000mg 10g 20mg 25g 500mg 2.5l 500ml 250ml 50ml 50mg 2g 200mg 20ml 250g 50g

全部 2000ug/ml in purge and trap methanol 分析标准品 分析标准品, 1000ug/ml in methanol standard for gc, ≥99.5%(gc) gc≥99% 100μg/ml in methanol 1000μg/ml in methanol standard for gc,≥99.5%(gc) 99% gc≥98% hplc≥98% 2000ug/ml in toluene hplc≥99% 1000μg/ml,in purge and trap methanol 100μg/ml in acetonitrile standard for gc, ≥99.7%(gc) standard for gc 分析标准品, ≥99.5%(gc) 分析标准品, ≥99.7%(gc) 2000μg/ml in toluene 500μg/ml in methanol 98% standard for gc, ≥99.9%(gc) 分析标准品, 1.00mg/ml in methanol 分析标准品, ≥99.9%(gc) 分析标准品, 用于环保分析 100μg/ml in isooctane 2000ug/ml in high purity methanol 2000ug/ml in methanol 500μg/ml in acetonitrile standard for gc, ≥99.5% 分析标准品, ≥99.5% 分析标准品, ≥99.8%(gc) 1.00mg/ml u=2% 基质:正己烷 1.14mg/ml in methanol 1000mg/l,溶剂:二氯甲烷 1000mg/l于二氯甲烷 1000μg/ml in acetone 1000μg/ml in acetonitrile,不确定度:2% 1000μg/ml in carbon disulfide 1000μg/ml in hexane,不确定度:2% 1000μg/ml in methanol,不确定度2% 1000μg/ml in methanol,不确定度:2% 1000μg/ml in methanol:methylbenzene(3:2) 1000μg/ml in n-hexane 1000μg/ml 于丙酮 1000μg/ml,in methanol 1000μg/ml,基体:甲叔丁醚 1000μg/ml,基体:甲醇 100mg/l in h2o 100ng/ul in methanol 100ug/ml,基体:甲醇 100μg/ml in acetone 100μg/ml in carbon disulfide 100μg/ml in cyclohexane 100μg/ml in methanol,不确定度3% 100μg/ml in methanol:methylbenzene(4:1) 100μg/ml,in methanol 10ng/ul in isooctane 131μg/ml 160.0 - 195.0μg/ml,溶剂:甲醇 165.0μg/ml,溶剂:甲醇 2000μg/ml,溶于甲醇中 200μg/ml,in purge and trap methanol 4.38ug/ml in methanol 45.2ug/ml in methanol 460μg/ml in methanol 500ug/ml in methanol 80.8µg/ml 81 ug/ml 92.5μg/ml,in methanol 95% ar,96%(异构体混合物) gc>99.5% gc≥97% gc≥99.5% hplc≥90% hplc≥95% standard for gc, ≥98.5%(gc) standard for gc, ≥99%(gc) standard for gc, ≥99% standard for gc, ≥99.5%(gc), 含0.01% mehq 稳定剂 standard for gc, ≥99.5%(gc), 含30ppm dmbp稳定剂 standard for gc, ≥99.5%(gc), 含40ppm二异丙胺 稳定剂 standard for gc, ≥99.5%(gc), 含50ppmmehq稳定剂 standard for gc,≥99.8%(gc) ≥95% ≥98 atom% d,≥98% ≥99%(hplc), 用于hplc衍生和检测类固醇 ≥99.8% 分析标准品, 0.100mg/ml in isooctane 分析标准品, 0.102mg/ml in isooctane 分析标准品, 0.103mg/ml in isooctane 分析标准品, 0.104mg/ml in isooctane 分析标准品, 0.105mg/ml in isooctane 分析标准品, 0.109mg/ml in isooctane 分析标准品, 0.114mg/ml in isooctane 分析标准品, 0.117mg/ml in isooctane 分析标准品, 0.299mg/l,基体:甲醇 分析标准品, 0.6mg/l,基体:甲醇 分析标准品, 0.92mg/ml in methanol 分析标准品, 0.93mg/ml in methanol 分析标准品, 0.978mg/ml in methanol 分析标准品, 1.01mg/ml in methanol 分析标准品, 1.04mg/ml in methanol 分析标准品, 1.0mg/ml in methanol 分析标准品, 1.30mg/ml in methanol 分析标准品, 1000ug/ml,in methanol 分析标准品, 1000μg/ml in n-hexane 分析标准品, 100mg/l in methanol 分析标准品, 100ug/ml in benzene 分析标准品, 1mg/ml in methanol 分析标准品, 20.1ug/ml in methanol 分析标准品, 200ug/ml in methanol 分析标准品, 3.58ug/ml in methanol 分析标准品, 4.25ug/ml in methanol 分析标准品, 455ug/ml in methanol 分析标准品, 5.0ug/ml in methanol 分析标准品, 500mg/l in pure water 分析标准品, 68.8μg/ml in methanol 分析标准品, ≥98% 分析标准品, ≥99.5%(gc), 含50ppmmehq稳定剂 分析标准品, ≥99.5%(gc), 含≤100 ppm mehq 稳定剂 分析标准品, ≥99.5%(hplc) 分析标准品, 在二硫化碳中为121ug/ml 分析标准品, 用于环保分析, ≥99%(gc) 分析标准品,99% 分析标准品,99.5% 分析标准品,≥99.5%(gc) 分析标准品,≥99.7%(gc) 标准值:1.01mg/ml 不确定度:3%(k=2)