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OM-100 Features: -Combo meter.-Electrical Conductivity Range: 0 - 9990 ?S; 0 - 9.99 Ms..-TDS Range: ..

$83.99

HM Digital TDS-3 Handheld TDS Meter With Carrying Case, 0 - 9990 ppm TDS Measurement Range, 1 ppm Re..

$25.18

HM Digital TDS-4 Pocket Size TDS Tester Meter with 0-9990 ppm Measurement Range, 1 ppm Resolution, 2..

$31.18

HM Digital TDS-EZ Water Quality TDS Tester, 0-9990 ppm Measurement Range , 1 ppm Resolution, +/- 3% ..

$30.40

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