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pH缓冲液-25℃(pH 0.50 ± 0.01)
缓冲溶液 for Karl Fischer Titration apura®
缓冲锭 pH 6.8 for preparing buffer solution acc. to WEISE for the staining of blood smears
pH缓冲液标准DIN 19266值(pH 6.865)
缓冲液 (boric acid/potassium chloride/sodium hydroxide), coloured: blue, traceable to SRM from NIST and PTB pH 9.00 (20°C) CertiPUR®
缓冲液 (boric acid/potassium chloride/sodium hydroxide), traceable to SRM from NIST and PTB pH 9.00 (20°C) CertiPUR®
pH缓冲液标准DIN 19266值(pH 12.454)
pH缓冲液-25℃(pH 3.56 ± 0.01)
缓冲液 (citric acid/sodium hydroxide/hydrogen chloride), traceable to SRM from NIST and PTB pH 4.00 (20°C) CertiPUR®
浓缩缓冲液 for 500 ml buffer solution, (boric acid/potassium chloride/sodium hydroxide), traceable to SRM of NIST and PTB for 500 ml buffer solution, pH 9.00 ± 0.02 (20°C) Titrisol®