Hanna HI1131B Refillable pH Electrode - Double Junction BNC General Purpose Lab 8806086511162 The Black Berkey Primer™ is

The Black Berkey Primer™ is the final piece in making your Berkey® Water System your off-grid solution for clean drinking water and for everyday use

After 700 filtration cycles or 4-8 months of use

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The Milwaukee PRO TDS monitor has a range of 0 to 1990 (ppm) with visual alarms that activate when readings are higher or lower than set point

Soak probe for 15-20 minutes

Hanna HI1131B Refillable pH Electrode - Double Junction BNC General Purpose Lab 8806086511162 The Black Berkey Primer™ isPerfect for general laboratory use, the HI1131B is a glass bodied combination pH electrode with a BNC connector for a quick and easy connection to any BNC pH meter. With a double junction design and the ability to change out contaminated electrolyte, this economical pH electrode ensures great results. Easy to clean glass body for faster measurements. BNC connector for quick and easy connection to most pH meters. Great for general laboratory use. Hanna