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Supco MFD10 Digital Capacitor Tester with LED Display, 0.01 to 10000mF Range, +/- 5 Percent Accuracy - Walmart.com
Water Quality Tester 3 in 1 Multifunction Pen Tester High Digital LCD Meter, EC Meter & Temperature Meter, Ideal for Drinking Water, Aquariums, etc. - Walmart.com