Hanna HI50021P Calibration Check Solution for HI9813-6 (25 x 20 mL Sachets) aquarium dosing ✅ Chemical removal: Eliminates PFOA

✅ Chemical removal: Eliminates PFOA

This is true of all pH probes

Titratable acidity is measured on a degassed sample at the end-point of 8

PC Connectivity: 1 USB Port

Cleaner Water

Hanna HI50021P Calibration Check Solution for HI9813-6 (25 x 20 mL Sachets) aquarium dosing ✅ Chemical removal: Eliminates PFOAHI50021P is a premium quality calibration check solution used exclusively for the HI9813 6 portable pH EC TDS Temp. meter. Each sachet has the lot number and expiration date stamped on it and is made of light block foil ensuring freshness each time one is opened. Hanna's line of solutions have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened sachet. The HI50021P is for 25 sachets containing 20 mL