Snakeskins
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I have a Etekcity tds meter which I'll use to measure my tap water with for my soil grows but I'm confused about the testing liquid I bought. I don't know what unit of measurement to look for when adjusting the actual device.
On the bottle it says:
1500 ppM (NaCI scale)
2190 ppM (442 scale)
2930 S (microSiemens)
Does anyone know what those numbers mean and what numbers I should calibrate to?
On the bottle it says:
1500 ppM (NaCI scale)
2190 ppM (442 scale)
2930 S (microSiemens)
Does anyone know what those numbers mean and what numbers I should calibrate to?