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As a guide
Citric Acid = < 10%
Everything you need to clean and maintain your conductivity probes
The Bluelab pH Controller Wi-Fi simplifies maintaining perfect pH levels in your hydroponic setup
6 foot cable
Bluelab 2.77 EC Conductivity Standard Solution - 500 ml Box of 6 US halloween25 As a guideConductivity standard solutions a must in every grower's toolbox Features: Contains 6 bottles 500 ml 16. 9 fl oz Improve EC PPM accuracy with regular cleaning
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