This 4 in 1 PH meter with one-hand operation measures the pH value of liquids via the galvanic voltage difference between acidic, neutral and basic
«PeakTech® P 5307» 4 in 1 PH-Meter for PH/EC/TDS/TEMP
PeakTech P 5307 4 in 1 PH-Meter for PH/EC/TDS/TEMP - review and quick test
PeakTech 5307 pH Meter User Manual
Tds metre
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