Bluelab Calibration SOL – PH4.0 / PH7.0 – 500ML

• PH 4.0 / PH 7.0 calibration solutions – a must in every grower’s toolbox
• Contains 500 ml/16.9 fl oz
• Boost your pH products’ longevity with regular cleaning and calibration
• Essential for use with all Bluelab pH products
• Calibration Solution is also available in 20 ml sachets and 250 ml bottles.

*Featured products shown, full catalogue available upon request*