Calibration Check Solution for HI9813-6 (25 x 20 mL Sachets) jg 50-stick box comes with 50

50-stick box comes with 50 single use stick packs

in a footprint no bigger than a toaster

Our premium reservoir covers are slightly convex with a ribbed design for strength

Easy to install and operate

The temperature coefficient is fixed at 2%/°C

Calibration Check Solution for HI9813-6 (25 x 20 mL Sachets) jg 50-stick box comes with 50HI50021P 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