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PC9965+DX801 Ph Monitors Hydroponics Portable Tds Ph/Ec/Orp/Temp/Do/Cl2 Meter Controller China
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About ph tds orp
1185 ph tds orp products are offered for sale by suppliers on Alibaba.com, of which ph meters accounts for 51%, other test instruments accounts for 4%.
Ph tds orp products are most popular in United States, South Korea, and Brazil.