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认证二级标准品缓冲液 potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 7.41 (25 °C), Certipur®

二级标准缓冲物质 pH 6.863

认证二级标准品缓冲液 potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 7.41 (25 °C), Certipur®

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Supelco (4)

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1.07202

二级标准缓冲物质 pH 6.863, potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 6.86 (25 °C), Certipur^®

1.07204

二级标准缓冲物质 pH 6.863, potassium tetraoxalate dihydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 1.67₉ (25°C) Certipur^®

1.07203

二级标准缓冲物质 pH 6.863, di-sodium tetraborate decahydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 9.18₀ (25°C) Certipur^®

1.07205

二级标准缓冲物质 pH 6.863, potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 7.41 (25 °C), Certipur^®