Temperature Influence on DuraCal pH Buffer 7.00
A prerequisite for an accurate pH calibration is the availability of suitable buffer solutions. Hamilton 7.00 DuraCal liquid buffer solutions are considered "Certified Reference Material" and are tested by a 3rd party lab - DAkkS - against primary reference solutions from PTB and NIST. 7.00 liquid buffers have an accuracy of +/- 0.01 pH over 24 months and +/- 0.02 pH over 60 months. Like all aqueous solutions, the pH value of the buffer is affected by changing temperature. The effects of temperature from 5 to 50°C is shown below in 1-degree increments.
pH vs. Temperature: Reference table for 7.00 Duracal pH buffers
(Refs 238318, 238218, 238918, 238333, 238188, 238896)
| Temp [°C] | pH Value | Temp [°C] | pH Value |
|---|---|---|---|
| 5 | 7.09 | 30 | 6.99 |
| 6 | 7.08 | 31 | 6.99 |
| 7 | 7.08 | 32 | 6.98 |
| 8 | 7.07 | 33 | 6.98 |
| 9 | 7.07 | 34 | 6.98 |
| 10 | 7.06 | 35 | 6.98 |
| 11 | 7.06 | 36 | 6.98 |
| 12 | 7.05 | 37 | 6.98 |
| 13 | 7.05 | 38 | 6.97 |
| 14 | 7.04 | 39 | 6.97 |
| 15 | 7.04 | 40 | 6.97 |
| 16 | 7.04 | 41 | 6.97 |
| 17 | 7.03 | 42 | 6.97 |
| 18 | 7.03 | 43 | 6.97 |
| 19 | 7.02 | 44 | 6.97 |
| 20 | 7.02 | 45 | 6.97 |
| 21 | 7.02 | 46 | 6.97 |
| 22 | 7.01 | 47 | 6.97 |
| 23 | 7.01 | 48 | 6.97 |
| 24 | 7.01 | 49 | 6.97 |
| 25 | 7.00 | 50 | 6.97 |
| 26 | 7.00 | ||
| 27 | 7.00 | ||
| 28 | 6.99 | ||
| 29 | 6.99 |