Suggested Retail: $10. TDS WATER QULAITY TESTING PEN. MULTIFUNCTIONAL (3 IN 1) & 5 UPGRADED 3 in 1 TDS Meter, Electric Conductivity Meter & Temperature (C,F) Meter features the most updated technology. Upgraded with big backlit LCD for easier reading, auto-lock function for easier use, factory calibrated and hold function for direct use and auto-off in 2 minutes to conserve battery. These enhancements make it a user-friendly tds meter digital water tester for a variety of applications. RELIABLE TDS METER WITH ACCURATE & QUICK MEASUREMENT: LIKDAY ppm water tester is equipped with premium quality titanium alloy probe, which enables quick and convenient water total dissolved solids (tds) test. 0-9999ppm wide test range makes it fits multiple uses, like drinking water test, swimming pool, hot tub, laboratory, hydroponics, aquariums, well water, tap water, etc. USER-FRIDNDLY DESIGN & QUALIFIED WATER TELLER: LIKDAY water hardness test meter with Big Backlit LCD is far superior than most digital water quality tester display, which allows wider angles of data reading and night reading. SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.