| Cat. No. | Description | Colour | PK | |
|---|---|---|---|---|
| 12268028 | pH 4.00 | Red | 30 | |
| 12268029 | pH 7.00 | Green | 30 | |
| 12268030 | pH 10.01 | Blue | 30 | |
| 12268045 | pH 4.00 - 7.00 - 10.01* | Red/Green/Blue | 30 |
- Accuracy ±0.02 pH units, reference temperature 25 °C
- Traceable to the National Institute of Standards and Technology (NIST)
- In 30 ml sealed-edge pouch with coloured tear-off edge
- The dyed buffer solutions allow easy identification