Bluelab pH 4.0 Calibration Solution – 250 ml / 8.4 fl oz ice maker scale prevention The HI98108 features a unique

The HI98108 features a unique reference cell design with a cloth junction that provides a larger surface area than standard ceramic junctions

GroLine HI9814 portable pH/EC/TDS meter

Berkey® 304 Stainless Steel Replacement Spigot

and releases these minerals slowly into water through ion exchange

✅ Chlorine

Bluelab pH 4.0 Calibration Solution – 250 ml / 8.4 fl oz ice maker scale prevention The HI98108 features a uniquepH 4. 0 calibration solution a must in every grower's toolbox Contains 1 bottle 250 ml 8. 4 fl oz Boost your pH products longevity with regular cleaning and calibration Bluelab pH 4. 0 Calibration Solution ensures accurate pH meter readings with lab grade precision. This 250 ml bottle delivers consistent calibration for refractometers, pH meters, and water quality testing equipment. Essential for maintaining measurement accuracy in hydroponic systems,