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Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit$31.95
Apera Instruments TDS20 Waterproof TDS Meter Tester Kit with Case$120.00
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Apera Instruments SX711 Portable Handheld ph/mV/Temperature Meter Kit Data Log$125.00
Apera Instruments AI213 Value Series TDS20 Waterproof Pocket Tester kit$76.87
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Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit $82.25
Apera Instruments AI213 Value Series TDS20 Waterproof TDS Pocket Tester kit$78.99As an eBay Partner, userbars.org may earn a commission from qualifying purchases.