Do cheap pH meters work?
I have seen $10-20 pH meters for testing soil in garden stores, home improvement/hardware stores. I was wondering do these give accurate readings? I am looking for a cheap and accurate way to test pH. Any suggestions even for other ph testing methods are appreciated. Thanks!
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Answer it!
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I found an expensive one which looks good, but what you're really asking is "how accurate?"
I'd say "not very", if you want high-accuracy you'll need to spend much more.
L
Guessing a bit here, but I would think that the cheap soil pH meters work by measuring the conductivity of the soil rather than the pH. The conductivity will be higher with a lower pH i.e. more acid.
If it's soil you're testing, you may be better off with a litmus based test kit such as THIS which also tests for nitrogen, potassium and phosphorus which are instrumental to plant growth.
If it's soil you're testing, you may be better off with a litmus based test kit such as THIS which also tests for nitrogen, potassium and phosphorus which are instrumental to plant growth.
. How accurate is accurate enough? What range are you measuring? What kinds of chemicals are involved?
. Most of the cheapies I've seen worked well for their intended use, but definitely are not "laboratory grade" units.
. Most of the cheapies I've seen worked well for their intended use, but definitely are not "laboratory grade" units.
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