Hanna's line of calibration solutions have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet

Range: 0 - 1990 (ppm) mg/L

This makes ceramic filtration highly reliable and consistent across the filter’s 1-year service life

Properly maintaining your pH and ORP probes will give you fast

Model Number: 1-40100-2-RES

Santevia Glass Water System | Mineralizing Countertop Filter – Removes Fluoride, Chlorine & Lead pH2O bottle Hanna's line of calibration solutionsWater That Looks Beautiful. Works Even Better. Most water filters strip everything out including the minerals your body actually needs. The Santevia Glass Water System does something different: it removes 90+ contaminants including fluoride, chlorine, and lead, then restores calcium, magnesium, and potassium the essential minerals your cells, tissues, and organs run on. The result is water that tastes smooth and refreshing, delivered through a hand