GENEQ > Environnement > Conductimètres

These waterproof and dustproof testers offer ±1% full scale accuracy and push-button calibration!
Waterproof, dustproof housing Meets IP67 ratings for highest possible dustproof and waterproof protection. Plus, there’s no need to worry if you drop your tester into water—it floats! Replaceable electrode you can use the same meter body over and over again, which saves you money Push-button calibration calibrate your tester more precisely than trimpot adjustment; no screwdrivers necessary HOLD function freezes reading until you can log it Auto shut-off turns off tester after 8.5 minutes of nonuse; saves your batteries Four models available TDSTestr low: 0 to 1990 ppm (10 ppm resolution) TDSTestr high: 0 to 10.00 ppt (0.10 ppt resolution) ECTestr low: 0 to 1990 µS (10 µS resolution) ECTestr high: 0 to 19.90 mS (0.10 mS resolution) Full reading displayed no need to multiply the readout to obtain actual test values Automatic temperature compensation (ATC) gives you accurate readings even in fluctuating temperatures Calibration kits available Featuring everything you need for calibration, measurement and storage of your waterproof TDSTestr
Clockwise from near right: TDSTestr low shown actual size •  Calibration kit includes everything you need for fast, accurate calibration •  Calibration button tucked away in battery compartment to avoid accidental recalibration •  Replaceable electrodes extend tester life •  Testr carrying case stores, transports and protects your tester in the field •  Choose from four models for conductivity or TDS measurements
APPLICATIONS
•  TDSTestr low: Use for measuring TDS in natural water. Verify reverse osmosis system operation and tap water quality. Check nutrient solution concentration in hydroponics applications. •  TDSTestr high: Use for measuring TDS in salt water, waste water, cooling tower water, and boiler condensate. Check nutrient solution concentration in hydroponics applications. Measure salinity for ponds and recirculating systems. Check saline and chemical levels in pools and spas. •  ECTestr low: Use for measuring conductivity (µS) in natural water. Verify reverse osmosis system operation and tap water quality. Check nutrient solution concentration in hydroponics applications. •  ECTestr high: Use for measuring conductivity (µS) in salt water, waste water, cooling tower water, and boiler condensate. Check nutrient solution concentration in hydroponics applications. Measure salinity for ponds and recirculating systems. Check saline and chemical levels in pools and spas.

SPECIFICATIONS
Model	waterproof TDSTestr low	waterproof TDSTestr high	waterproof ECTestr low	waterproof ECTestr high
Range	0 to 1990 ppm	0 to 10.00 ppt	0 to 1990 µS	0 to 19.90 mS
Resolution	10 ppm	0.10 ppt	10 µS	0.10 mS
Accuracy	±1% full-scale
Calibration	One point push-button calibration (using keys inside battery compartment)
Calibration standard range	300 to 1990 ppm	3 to 10.00 ppt	300 to 1990 µS	3 to 19.90 mS
Operating temp.	0 to 50°C; 32 to 122°F
Temperature compensation	Automatic (ATC), 0 to 50°C, 32 to 122°F
ATC coefficient	Beta=2% per °C, 1.11% per °F, 25°C reference temperature
Power and battery life	Four 1.5 V alkaline batteries Eveready A76BP (supplied) 100 hrs. continuous use (approx. 600 tests per battery pack). Alternate replacement model Eveready 357BP silver oxide, 140 hrs. continuous use.
Dimensions	Unit only: 61⁄2"L x 11⁄2" dia. (165 x 38 mm); Boxed: 71⁄4" x 23⁄4" x 17⁄8" (184 x 70 x 48 mm)
Weight	Unit only: 3.25 oz (90 g); Boxed: 6.0 oz (170 g)
Wetted materials	316 Stainless Steel (electrodes) and glass filled thermoplastic polyester

ORDERING INFORMATION
All TDSTestrs include batteries and operating instructions.
WD-35661-11 Waterproof TDSTestr low 0 to 1990 ppm
WD-35661-41 Waterproof ECTestr high 0 to 19.90 mS
ACCESSORIES
WD-35661-17 Replacement electrode sensor, for all TDSTestrs and ECTestrs listed above. WD-35624-45 Waterproof tester belt loop vinyl carrying case—holds one waterproof tester. Features separate pocket to hold calibration solution pouches. Shpg wt 0.5 lbs (227 g) WD-09377-16 Replacement batteries, 1.5 V, 6/pack WD-35661-70 Deluxe TDSTestr kit. Includes 2 each calibration pouches 447 µS, 1413 µS, 2764 µS, 15,000 µS, and rinse water; sample jar; miniature screwdriver; foam-lined plastic carrying case; and instructions. Order TDSTestr separately. Shpg wt 0.7 lb (300 g)

CALIBRATIONS SOLUTIONS
		Conductivity-to-TDS conversion factors
Catalog Number	Calibration solution type	ppm KCl	ppm NaCl	ppm 442
Calibration solution pouches. box of 20. Each pouch contains 20 ml of premixed calibration solution. Since the pouches are individually sealed, the solution is guaranteed to be fresh and contaminant free every time. Accuracy ±1% at 25°C. Shpg wt 1 lb. (454 g).
WD-35653-10	447 µS	225.6	215.5	300.0
WD-35653-11	1413 µS	744.7	702.1	1000
WD-35653-12	2764 µS	1382	1414.8	2062.7
WD-35653-13	15,000 µS	8759	8532	13,455
Calibration solution bottles. 1 pint of premixed calibration solution in recyclable-PE bottle. Accuracy ±1% at 25°C. Shpg wt 1.1 lbs (510 g).
WD-00653-16	84 µS	40.38	38.04	50.50
WD-00653-47	447 µS	225.6	215.5	300.0
WD-00653-18	1413 µS	744.7	702.1	1000
WD-00653-15	1500 µS	757.1	737.1	1050
WD-00653-27	2070 µS	1045	1041	1500
WD-00653-20	2764 µS	1382	1414.8	2062.7
WD-00653-89	8974 µS	5101	4487	7608
WD-00606-10	12,880 µS	7447	7230	11,367
WD-00653-50	15,000 µS	8759	8532	13,455
For our standard waterproof TDSTestrs, request bulletin CON A3. For our + Series waterproof TDSTestrs and ECTestrs, request bulletin CON A5.