391312
300ml / 4 - £2.66
- 300ml / 4 - £2.66
- 300ml / 7 - £2.66
- 1l / 4 - £8.96
- 1l / 7 - £8.96
pH Pen Calibration Fluid
PRODUCT DETAILS
For use in calibrating all pH pens, pH Buffer 4 and pH Buffer 7 available in 300ml and 1l bottles.
Calibration of all measuring equipment should be performed weekly to ensure accuracy with critical nutrient solution measurements.