10 in one Multifunctional Water Quality Test Pen PH/TDS/EC/salinity/S.G/ORP/hydrogen-rich H2/M resistivity nutrient solution

10 in one Multifunctional Water Quality Test Pen PH/TDS/EC/salinity/S.G/ORP/hydrogen-rich H2/M resistivity nutrient solution
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sku: 1005004302011090
$21.96
Shipping from: China

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