Buffer Solution , Ph 4 - 1094351000 - Hóa Chất Phân Tích

S              pH-value              20 °C                      3.98 - 4.02                                           

S                                                                                                              Measured with a combination glass electrode after 5-point calibration (according to DIN19268) with reference materials for the preparation of reference buffer solutions according to DIN 19266 at the laboratory accredited by DKD-K-14301 Uncertainty: +/- 0.015

S                                                                                                              Deviations of pH (DeltapH) at various temperatures:

S                              0 °C                                                        + 0.05   

S                              5 °C                                                        + 0.04   

S                              10 °C                                                      + 0.02   

S                              15 °C                                                      + 0.01   

S                              20 °C                                                      +/- 0     

S                              25 °C                                                      + 0.01   

S                              30 °C                                                      + 0.01   

S                              35 °C                                                      + 0.01   

S                              40 °C                                                      + 0.01   

S                              50 °C                                                      +/- 0     

S                                                                                                              Traceable to primary reference materials from: NIST 189a, 188, 185g, 186 Ie, 186 IIe, 187d PTB OX-01, TA-01,PHT-01/00, PHOA-01/00PHOB-01/00,BO-01/00 NIST: National Institute of Standards and Technology PTB: Physikalisch-Technische Bundesanstalt

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