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YFDGD Water Tester 3In1 TDS EC Meter Temperature Tester Pen Multifunctional Digital Water Quality For Purity TEMP PPM Multipurpose Accurate Easy(White test screen)
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YFDGD Water Tester Professional 3In1 Tester Water Meter TDS EC Temperature Digital LCD Testing Pen Purity Filter Quality Multipurpose Accurate Easy
YFDGD Water Tester 3in1 Professional Water Quality Test Pen TDS EC Meter Temperature Tester Drinking Purity Digital Waters Qualitys Testers Multipurpose Accurate Easy(White Backlight)
