So far we tested pHydrunio in these solutions:

Electrolyte
  Temperature 
   pHydrunio  
  ± 5 mV
  pH-Value 
10 mol/l hydrofluoric acid 27°C -174
-0.39
1 mol/l hydrochloric acid 24°C
-197
0.00
50% formic acid 22°C
-207
0.17
5 mol/l hydrofluoric acid 27°C -212
0.25
1 mol/l citric acid 23°C
-281
0.43
1 mol/l oxalic acid
23°C
-235
0.65
50% lactic acid 22°C
-255
0.98
1 mol/l hydrofluoric acid 27°C
-264
1.12
50% acetic acid 24°C
-271
1.26
50% citric acid 24°C
-222
1.43
1 mol/l lactic acid 23°C
-301
1.76
1 mol/l formic acid 23°C -302
1.78
1 mol/l acetic acid 23°C
-333
2.31
1 mol/l sodium hydroxide 23°C
-1004
13.74
5 mol/l sodium hydroxide 24°C
-1052
14.50
10 mol/l sodium hydroxide 24°C
-1102
15.35

pHydrunio works also in standard buffer solutions. If you are looking for a solution not mentioned in the table above, it does not necessarily mean that pHydrunio can't be used in your application. It only means that we did not yet test it. Please do not hesitate to contact us in this case!