The Comboinstruments Soil pH/ Humidity Meter works with all substrates. You can measure the coconut fiber, the stonewool, the perlite, the vermiculite, soil, and even clay pebbles.
Specifications
The range of pH measurement: 3 ÷ 8
Humidity measurement range: 1 ÷ 8
Range of error 0.1 – 0.5
It does not require calibration
It does not require a battery
Maximum diameter: ø51mm
Length: 165mm
Weight: 150g
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