TDS water quality testing pen for household reverse osmosis tap water testing pH value electrolyzer PPM hardness mineral pen

$1.96 / Parcel$2.35
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Easy detection in various occasions This series of products has high precision and stable operation, and can detect the content of solid substances, pH value, residual chlorine concentration, calcium and magnesium content in solutions. They are widely used in industries, electricity, agriculture, medicine, food, scientific research, and environmental protection fields

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Easy detection in various occasions This series of products has high precision and stable operation, and can detect the content of solid substances, pH value, residual chlorine concentration, calcium and magnesium content in solutions. They are widely used in industries, electricity, agriculture, medicine, food, scientific research, and environmental protection fields