Quick Calibration Solution for GroLine pH and EC Meters (25 x 20 mL sachets) microbes It's great for outdoor trail

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Quick Calibration Solution for GroLine pH and EC Meters (25 x 20 mL sachets) microbes It's great for outdoor trailHI50036P is a quick calibration solution for use with Hanna's GroLine pH and or EC TDS meters. Using the Quick Cal function found in compatible meters allows for a single point calibration for pH and or conductivity sensors. 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 calibration solutions have been specially formulated to have an