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Ships within 48 hours · Estimated delivery Oct 10 - Oct 15
The COM-300 is a professional grade level pH/EC/TDS/Temp meter ideal for all water quality testing
Removable water tank with an automatic shutoff when reservoir is full
Simple to operate - Easy to use
120V AC/24V AC power transformer
More than 40 years ago
General Hydroponics PRO pH Up 2.5 gal Hm The COM-300 is a professionalGeneral Hydroponics Pro pH adjusters are based on completely different technology than our traditional smaller sized adjusters offering. New non mineral based acids and bases will not add nutrient value like the use of phosphoric acid or potassium hydroxide. They are safer to use as well as compared to mineral based adjusters. This is due to having a zero rating score for all safety categories on the HMIS scale as well as being non corrosive and non
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