认证二级缓冲液标准品|N#A4411|Supelco|potassium tetraoxalate dihydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 1.67₉ (25°C) Certipur|箱(5*100ml) N#A4411
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缓冲液|
Supelco-M#1.09461.1000 | 1l
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认证二级缓冲液标准品，磷酸氢钾/磷酸氢二钠，可直接追溯至 NIST/PTB 的主要 SRM pH(S) = 7.41₃ (25°C) Certipur|N#A4994|Supelco|箱(5*100ml) N#A4994
Supelco-M#1.07205.0105 | 箱(5*100ml)
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缓冲液|N#A4633|Supelco|(di-sodium hydrogen phosphate/potassium dihydrogen phosphate), traceable to SRM from NIST and PTB pH 7.00 (20癈) Certipur|1L N#A4633
Supelco-M#1.09439.1000 | 1L
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缓冲液|N#A912800|Supelco|(di-sodium hydrogen phosphate/potassium dihydrogen phosphate), colour:yellowtraceable to SRM from NIST and PTB pH 7.00 (25癈) Certipur®|500 mL N#A912800
Supelco-M#1.99057.0500 | 500 mL
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缓冲液|N#A912799|Supelco|(boric acid/potassium chloride/sodium hydroxide) colour coded: blue, traceable to NIST and PTB pH 10.00 (25癈) Certipur®|500 mL N#A912799
Supelco-M#1.99050.0500 | 500 mL
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邻苯二甲酸氢钾|N#A7702|Supelco|认证二级缓冲液标准品|箱
Supelco-M#1.07200.0105 | 箱(5*100ml)
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pH1.68 缓冲标液 Potassium Tetroxalate Dihydrate Buffer
ZIV-PH-1.68-1L | 1L
- 认证二级缓冲液标准品
- 常温
- 密封阴凉干燥保存
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