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          • Curb & Valve Box Key Kits
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          • Mechanical Joint (MJ) Accessory Kits
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          • Couplings
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          • Brass Pipe Fittings
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          • Descaler
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          • Reamers
          • Replacement Blades
          • Replacement Wheels
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          • Tubing C Cutters
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        • Service Saddles
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        • Blocking Plugs
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        • Deflection Testing
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        • Chlorine Analyzers & Accessories
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        • Controllers & Transmitters
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        • Hardness Analyzers & Accessories
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      • Pumps
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        • Centrifugal Pumps
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          • Pump Control Panels, Accessories
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        • Sewage Pumps
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          • Semi-Trash Pumps, Engine Driven
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        • Blowers & Ventilation
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          • Harnesses and Lanyards
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          • Face Shields
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          • First Aid Cabinets
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          • Chemical Resistant Gloves
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          • Hard Hats and Safety Helmets
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        • Hearing Protection
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        • Hydration
        • Respiratory Protection
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          • Bitter and Sweet Fit Test Kits
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          • Respirator Cartridges & Accessories
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          • Belts & Suspenders
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        • Signs, Tags & Labels
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          • Box of Tags
          • Cross Barrier, Man-Way
          • Decals, Hard Hat
          • Dispensers, Acrylic
          • Floor Marking Strips, Heavy Duty
          • Labels, Arc Flash
          • Labels, Safety
          • Labels, Voltage Markers
          • Pipe Markers, Self Stick
          • Pipe Markers, Snap Tite
          • Right to Know/SDS
          • Sign Posts & Hardware
          • Signs, Braille
          • Signs, California Title 24
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          • Stencil
          • Tags By-The-Roll
          • Tags, Cylinder
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          • Tape, Pipe Directional Flow Arrow
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92 Products

Conductivity, Salinity & TDS Testing


Get accurate water quality measurements with tools for testing conductivity, salinity, and TDS.


Explore a selection of conductivity, salinity, and TDS tools that help ensure high-quality water testing in your facility. These effective and accurate measurement devices and solutions ensure you can test to the highest degree.

Conductivity Probes
Conductivity Standards
Conductivity, Salinity & TDS Instrumentation
Core & Main Conductivity Standard, 15,000 µS/cm, 500 mL
$19.50

Mfr. Part # CS9915-P

Product # 706863

Core & Main Conductivity Standard, 12,880 µS/cm, 500 mL
$24.85

Mfr. Part # CS9912-P

Product # 706862

Core & Main Conductivity Standard, 10,000 µS/cm, 4 L
$127.15

Mfr. Part # CS9910-G

Product # 706861

Core & Main Conductivity Standard, 8974 µS/cm, 500 mL
$19.50

Mfr. Part # CS8974-P

Product # 706860

Core & Main Conductivity Standard, 5000 µS/cm , 1 L
$36.30

Mfr. Part # CS5000-Q

Product # 706859

Core & Main Conductivity Standard, 2500 µS/cm, 1 L
$29.95

Mfr. Part # CS2500-Q

Product # 706858

Core & Main Conductivity Standard, 2764 µS/cm, 500 mL
$19.50

Mfr. Part # CS2764-P

Product # 706857

Core & Main Conductivity Standard, 1500 µS/cm, 500 mL
$18.75

Mfr. Part # CS1500-P

Product # 706856

Core & Main Conductivity Standard, 1413 µS/cm, 500 mL
$19.15

Mfr. Part # CS1413-P

Product # 706855

Core & Main Conductivity Standard, 1000 µS/cm, 1 L
$29.95

Mfr. Part # CS1000-Q

Product # 706854

Core & Main Conductivity Standard, 500 µS/cm, 4 L
$64.45

Mfr. Part # CS0500-G

Product # 706853

Core & Main Conductivity Standard, 447 µS/cm, 500 mL
$18.75

Mfr. Part # CS0447-P

Product # 706852

Core & Main Conductivity Standard, 84 µS/cm, 500 mL
$18.75

Mfr. Part # CS0084-P

Product # 706851

Core & Main Conductivity Standard, 23 µS/cm, 500 mL
$79.50

Mfr. Part # CS0023-P

Product # 706850

Core & Main Conductivity Standard, 10 µS/cm, 500 mL
$79.45

Mfr. Part # CS0010-P

Product # 706849

Hach Conductivity Solution, 500 µS/cm, 1 L, 25M3A2000-500
$207.00

Mfr. Part # 25M3A2000-500

Product # 702715

Hach Replacement Sensor for Pocket Pro⁺ Multi 2 Tester (pH, Cond, TDS, Sal, Temp), 9532801
$180.00

Mfr. Part # 9532801

Product # 702554

Hach Replacement Sensor for Pocket Pro⁺ Multi 1 Tester (Cond, TDS, Sal, Temp), 9532701
$147.00

Mfr. Part # 9532701

Product # 702552

Hach Pocket Pro+ Multi 1 Tester for Cond/TDS/Salinity w/ Replaceable Sensor, 9532700
$306.00

Mfr. Part # 9532700

Product # 702551

Hach Pocket Pro Salinity Tester, 9531600
$207.00

Mfr. Part # 9531600

Product # 702544

Hach Pocket Pro High Range Conductivity Tester, 9531500
$181.00

Mfr. Part # 9531500

Product # 702543

Hach Pocket Pro Low Range Conductivity Tester, 9531400
$181.00

Mfr. Part # 9531400

Product # 702542

Hach Pocket Pro High Range TDS Tester, 9531300
$181.00

Mfr. Part # 9531300

Product # 702541

Hach Pocket Pro Low Range TDS Tester, 9531200
$187.00

Mfr. Part # 9531200

Product # 702540

Hach Replacement TDS sensor for Sension+ 5049 multisensor, LZW9172.99
$517.00

Mfr. Part # LZW9172.99

Product # 703809

Hach Printed tubes for TDS calibration, 3 x 10 mL, for portable Sension+, LZW9138.99
$17.79

Mfr. Part # LZW9138.99

Product # 703804

Hach 3 each 50 mL printed flasks for Sension+ laboratory TDS calibration, LZW9111.99
$21.85

Mfr. Part # LZW9111.99

Product # 703799

Hach Sension+ 5060 Portable Platinum TDS Cell for General Applications, LZW5060.97.0002
$598.00

Mfr. Part # LZW5060.97.0002

Product # 703786

Hach Sension+ 5070 Laboratory Platinum TDS Cell for General Applications, LZW5070.97.0002
$614.00

Mfr. Part # LZW5070.97.0002

Product # 703788

Hach Sension+ 5062 Portable Titanium TDS Cell for Difficult Applications, LZW5062.97.0002
$635.00

Mfr. Part # LZW5062.97.0002

Product # 703787

Hach Sension+ 5059 Portable Multi-Parameter Electrode: pH, TDS & Temperature, LZW5059.97.0002
$752.00

Mfr. Part # LZW5059.97.0002

Product # 703785

Hach Sension+ 5048 Portable Multi-Parameter Electrode: pH, TDS, ORP & Temperature, LZW5048.97.0002
$855.00

Mfr. Part # LZW5048.97.0002

Product # 703777

Hach Sension+ 5049 Portable Multi-Parameter Electrode: pH, TDS, DO & Temperature, LZW5049.97.0002
$1,780.00

Mfr. Part # LZW5049.97.0002

Product # 703778

Hach Gallic Acid Solution, 50 mL SCDB, 1442326
$30.29

Mfr. Part # 1442326

Product # 701025

Hach Sodium Chloride Standard Solution, 491 mg/L NaCl (1000 µS/cm), 1 L, 1440053
$66.29

Mfr. Part # 1440053

Product # 701021

Hach Conductivity Standard Solution, 1000 µS/cm, NaCl, 50 mL, 1440026
$16.59

Mfr. Part # 1440026

Product # 701018

Hach Sodium Chloride Standard Solution, 85.47 mg/L (180 µS/cm), 1L, 2307553
$66.49

Mfr. Part # 2307553

Product # 701412

Hach Sodium Chloride Standard Solution, 18000 µS/cm, 500 mL, 2307449
$49.15

Mfr. Part # 2307449

Product # 701410

Hach Conductivity Standard Solution, 18000 µS/cm, NaCl, 100 mL, 2307442
$24.19

Mfr. Part # 2307442

Product # 701409

Hach Conductivity Standard Solution, 1990 µS/cm, NaCl, 100 mL, 210542
$25.45

Mfr. Part # 210542

Product # 700829

Hach 1990 µS/cm Conductivity Standard, 995 mg/L TDS, 1000 mg/L NaCl, 1 L, 210553
$66.49

Mfr. Part # 210553

Product # 700830

Hach Singlet™ Single-use Conductivity Standard Solution, 1413 µS/cm, KCl, 20 mL, 2771420
$75.55

Mfr. Part # 2771420

Product # 701913

Hach Singlet™ Single-use Conductivity Standard Solution, 12.88 mS/cm, KCl, 20 mL, 2771520
$75.55

Mfr. Part # 2771520

Product # 701914

Hach Singlet™ Single-use Conductivity Standard Solution, 147 µS/cm, KCl, 20 mL, 2771320
$75.55

Mfr. Part # 2771320

Product # 701912

Hach Potassium Chloride Std Solution, 35.0 ppt Salinity, 53.0 mS/cm Conductivity, 500 mL, 2714349
$68.05

Mfr. Part # 2714349

Product # 701860

Hach Certified Conductivity Standard Solution, 25 μS/cm, NaCl 25, 250 mL, S51M013
$96.50

Mfr. Part # S51M013

Product # 704047

Hach Certified Conductivity Standard Solution, 1015 µS/cm, 0.05% NaCl, 500 mL, S51M004
$108.00

Mfr. Part # S51M004

Product # 704046

Hach Certified OIML Conductivity Standard Solution, 12.85 mS/cm, KCl 0.1D, 500 mL, S51M002
$108.00

Mfr. Part # S51M002

Product # 704044

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