二级标准缓冲物质 pH 9.184

二级标准缓冲物质 pH 9.184, di-sodium tetraborate decahydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 9.18₀ (25°C) Certipur^®

二级标准缓冲物质 pH 9.184, potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 6.86 (25 °C), Certipur^®

二级标准缓冲物质 pH 9.184, potassium hydrogen phthalate, directly traceable to primary SRM from NIST/PTB pH (S) = 4.00₅ (25°C) Certipur^®

二级标准缓冲物质 pH 9.184, potassium dihydrogen phosphate/di-sodium hydrogen phosphate, pH 7.41 (25 °C), Certipur^®

二级标准缓冲物质 pH 9.184, potassium tetraoxalate dihydrate, directly traceable to primary SRM from NIST/PTB pH(S) = 1.67₉ (25°C) Certipur^®