Temperature Influence on DuraCal pH Buffer 4.01
A prerequisite for an accurate pH calibration is the availability of suitable buffer solutions. Hamilton 4.01 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. 4.01 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 4.01 DuraCal pH buffer
(Refs 238317, 238217, 238917, 238332, 238194, 238895)
| Temp [°C] | pH Value | Temp [°C] | pH Value |
|---|---|---|---|
| 5 | 4.01 | 30 | 4.01 |
| 6 | 4.01 | 31 | 4.01 |
| 7 | 4.01 | 32 | 4.01 |
| 8 | 4.00 | 33 | 4.02 |
| 9 | 4.00 | 34 | 4.02 |
| 10 | 4.00 | 35 | 4.02 |
| 11 | 4.00 | 36 | 4.02 |
| 12 | 4.00 | 37 | 4.02 |
| 13 | 4.00 | 38 | 4.03 |
| 14 | 4.00 | 39 | 4.03 |
| 15 | 4.00 | 40 | 4.03 |
| 16 | 4.00 | 41 | 4.03 |
| 17 | 4.00 | 42 | 4.04 |
| 18 | 4.00 | 43 | 4.04 |
| 19 | 4.00 | 44 | 4.04 |
| 20 | 4.00 | 45 | 4.04 |
| 21 | 4.00 | 46 | 4.05 |
| 22 | 4.00 | 47 | 4.05 |
| 23 | 4.00 | 48 | 4.05 |
| 24 | 4.00 | 49 | 4.05 |
| 25 | 4.01 | 50 | 4.06 |
| 26 | 4.01 | ||
| 27 | 4.01 | ||
| 28 | 4.01 | ||
| 29 | 4.01 |