Temperature range of standard solutions

  | Standard-buffer solution | Technical buffer solution |
  | Meinsberg Lab-buffer solution | Redox-buffer solution |
  | Conductivity standard solution |

Standard-buffer solution acc. DIN 19266 or NBS

T in °C	pH values
T in °C	A	C	D	F
0		4.010	6.984	9.464
5	1.668	4.004	6.951	9.395
10	1.670	4.000	6.923	9.332
15	1.672	3.999	6.900	9.276
20	1.675	4.001	6.881	9.225
25	1.679	4.006	6.865	9.180
30	1.683	4.012	6.853	9.139
35	1.688	4.021	6.844	9.102
38	1.691	4.027	6.840	9.081
40	1.694	4.031	6.838	9.068
45	1.700	4.043	6.834	9.038
50	1.707	4.057	6.833	9.011
55	1.715	4.071	6.934	8.985
60	1.723	4.087	6.836	8.962

Technical buffer solution acc. DIN 19267

T in °C	pH values
T in °C	TC	TD	TE
0	4.67	6.89	9.84
10	4.66	6.84	9.37
20	4.65	6.80	9.27
25	4.65	6.79	9.23
30	4.65	6.78	9.18
40	4.66	6.76	9.09
50	4.68	6.76	9.00
60	4.70	6.76	8.92
70	4.72	6.76	8.88
80	4.75	6.78	8.85

Meinsberg Lab-buffer solution (STM)

T in °C	pH values
T in °C	4.0	7.0	10.0
0	4.01	7.13	10.65
5	4.01	7.07	10.52
10	4.00	7.05	10.39
15	4.00	7.02	10.26
20	4.00	7.00	10.13
25	4.01	6.98	10.00
30	4.01	6.98	9.87
35	4.02	6.96	9.74
40	4.03	6.95	9.61
45	4.04	6.95	9.48
50	4.06	6.95	9.35

Redox-buffer solution 427 mV; pH 7.0

T in °C	pH values	U_A in mV	U_H in mV
10	7.06	245	462
15	7.04	236	450
20	7.02	228	439
25	7.00	220	427
30	6.98	212	415
35	6.96	204	404
40	6.95	195	391
50	6.95	178	366
60	6.96	160	340

U_A: redox potential measured against Ag/AgCl-reference electrode 3 mol/l KCl
U_H: redox potential measured against standard hydrogen electrode

Conductivity standard solution (KCl)

T in °C	conductivity in mS/cm
T in °C	0.001 N	0.01 N	0.1 N
10		1.020	9.33
15	0.118	1.147	10.48
18	0.127	1.225	11.19
19	0.130	1.251	11.43
20	0.133	1.278	11.67
21	0.136	1.305	11.91
22	0.138	1.332	12.15
23	0.141	1.359	12.39
24	0.144	1.386	12.64
25	0.147	1.413	12.88
30	0.163	1.552	14.12