This Standard Reference Material (SRM®) is intended for use in preparing solutions for calibrating electrodes for pH measuring systems. NIST-188, potassium hydrogen tartrate (KHC4H4O6), is a material of high purity and uniformity. A solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius is recommended as a standard for the calibration of pH equipment betweeen 25 and 95 Grad Celsius. The 0.01 molal solution is recommended as a standard for the range 0 to 60 Grad Celsius. /// Sample value(s) - please ask for current certificate.
Contents
Analyte
CAS Number
Concentration
Unit
Additional information
Method
pH(S)
25 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
30 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
35 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
40 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
38 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
40 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
45 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
50 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
55 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
60 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
70 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
80 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
90 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
95 Grad Celsius (solution saturated with potassium hydrogen tratrate at 25 ± 1 Grad Celsius)
pH(S)
0 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
5 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
10 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
15 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
20 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
25 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
30 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
35 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
38 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
40 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
45 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
50 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
55 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
pH(S)
60 Grad Celsius (0.01 molal solution of potassium hydrogen tratrate)
Miscellaneous
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