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1382PPM@25c Calibration Solution
1382PPM@25c Calibration Solution
$1.40
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HM Digital PH-STOR pH Electrode Storage Solution
For use with HM Digital's PH-200 and PH-80 (as well as other brands of pH meters). Always make sure your sensor is kept in an electrode storage solution. If dry, refill the pH meter cap with the PH-STOR storage solution. The sponge should be moist (not soaking wet).
HM Digital PH-STOR pH Electrode Storage Solution
$13.59
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TDS Calibration Solution 1500
TDS Calibration Solution 1500
$8.50
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General Hydroponics pH Control Kit
General Hydroponics pH Control Kit contains 8 oz pH UP, 8 oz pH DOWN, 1 oz indicator and vial.
General Hydroponics pH Control Kit
$21.11
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HM Digital PH-80
HM Digital PH-80
$46.55
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TDS-3 Handheld TDS meter
Ideal for commercial use, the TDS-3 includes a carrying case with belt clip. It is highly efficent and accurate due to its advanced microprocessor technology. It features a measurement range of 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1 ppm. From 1000 to 9990 ppm, the resolution is in increments of 10 ppm, indicated by a blinking image.
TDS-3 Handheld TDS meter
$32.00
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1413mS/cm Calibration Sol. 25x
1413mS/cm Calibration Sol. 25x
$1.40
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HM Digital pH Buffer Solution 7.0 mL
PH Calibration and storage solution works with both ECO and PRO models. Includes individual liquid calibration packets and ready-to-use.
HM Digital pH Buffer Solution 7.0 mL
$2.50
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GH pH Down Liquid
The acid formulation uses food-grade phosphoric acid to lower the pH to the proper level.
GH pH Down Liquid
$35.99
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cyco 1800 TDS calibration solution
cyco 1800 TDS calibration solution
$8.00
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