Atlas Scientific pH Up and Down 1L (32oz)
Great for Aquaponics and Hydroponics
$19.99
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DOY Digital PH Meter Tester for Water Quality Food Aquarium Pool Hydroponics Pocket Size PH Tester (0 01 High Accuracy – 0 05 and 0 00-14 00 Measurement Range and Large LCD Display) -Blue
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DOY Digital PH Meter Tester for Water Quality Food Aquarium Pool Hydroponics Pocket Size PH Tester (0 01 High Accuracy – 0 05 and 0 00-14 00 Measurement Range and Large LCD Display) -Blue
Easy Calibration Doy ph meter using two points typePH 400 PH686 automatic calibration When calibrating you just need to place the instrument in the standard buffer and press the CAL button The instrument automatically starts calibration data
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