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Green and Clean Hydroponics Systems

PH papers, range 4.0-7.0 (100) pkg

Hydroponic Products - EC PH Testing & Water Treatment
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pH Papers
 
Tiny pH litmus paper strips can be dipped into the nutrient solution; the corresponding colour change will tell you the pH of the solution. Measures pH 4.0 to 7.0 very accurately.
 
Box of 100 strips.
PH papers, range 4.0-7.0 (100) pkg ..................... $ 29.95
 

 
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