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.

Core & Main Conductivity Standard, 15,000 µS/cm, 500 mL
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Core & Main Conductivity Standard, 15,000 µS/cm, 500 mL
$20.25

Mfr. Part # CS9915-P

Product # 706863

Core & Main Conductivity Standard, 12,880 µS/cm, 500 mL
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Core & Main Conductivity Standard, 12,880 µS/cm, 500 mL
$27.20

Mfr. Part # CS9912-P

Product # 706862

Core & Main Conductivity Standard, 10,000 µS/cm, 4 L
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Core & Main Conductivity Standard, 10,000 µS/cm, 4 L
$132.15

Mfr. Part # CS9910-G

Product # 706861

Core & Main Conductivity Standard, 8974 µS/cm, 500 mL
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Core & Main Conductivity Standard, 8974 µS/cm, 500 mL
$20.25

Mfr. Part # CS8974-P

Product # 706860

Core & Main Conductivity Standard, 5000 µS/cm , 1 L
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Core & Main Conductivity Standard, 5000 µS/cm , 1 L
$34.30

Mfr. Part # CS5000-Q

Product # 706859

Core & Main Conductivity Standard, 2500 µS/cm, 1 L
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Core & Main Conductivity Standard, 2500 µS/cm, 1 L
$31.15

Mfr. Part # CS2500-Q

Product # 706858

Core & Main Conductivity Standard, 2764 µS/cm, 500 mL
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Core & Main Conductivity Standard, 2764 µS/cm, 500 mL
$20.25

Mfr. Part # CS2764-P

Product # 706857

Core & Main Conductivity Standard, 1500 µS/cm, 500 mL
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Core & Main Conductivity Standard, 1500 µS/cm, 500 mL
$19.50

Mfr. Part # CS1500-P

Product # 706856

Core & Main Conductivity Standard, 1413 µS/cm, 500 mL
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Core & Main Conductivity Standard, 1413 µS/cm, 500 mL
$19.90

Mfr. Part # CS1413-P

Product # 706855

Core & Main Conductivity Standard, 1000 µS/cm, 1 L
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Core & Main Conductivity Standard, 1000 µS/cm, 1 L
$31.15

Mfr. Part # CS1000-Q

Product # 706854

Core & Main Conductivity Standard, 500 µS/cm, 4 L
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Core & Main Conductivity Standard, 500 µS/cm, 4 L
$67.00

Mfr. Part # CS0500-G

Product # 706853

Core & Main Conductivity Standard, 447 µS/cm, 500 mL
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Core & Main Conductivity Standard, 447 µS/cm, 500 mL
$19.50

Mfr. Part # CS0447-P

Product # 706852

Core & Main Conductivity Standard, 84 µS/cm, 500 mL
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Core & Main Conductivity Standard, 84 µS/cm, 500 mL
$19.50

Mfr. Part # CS0084-P

Product # 706851

Core & Main Conductivity Standard, 23 µS/cm, 500 mL
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Core & Main Conductivity Standard, 23 µS/cm, 500 mL
$82.60

Mfr. Part # CS0023-P

Product # 706850

Core & Main Conductivity Standard, 10 µS/cm, 500 mL
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Core & Main Conductivity Standard, 10 µS/cm, 500 mL
$82.55

Mfr. Part # CS0010-P

Product # 706849

Hach Conductivity Solution, 500 µS/cm, 1 L, 25M3A2000-500
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Hach Conductivity Solution, 500 µS/cm, 1 L, 25M3A2000-500
$222.00

Mfr. Part # 25M3A2000-500

Product # 702715

Hach Replacement Sensor for Pocket Pro⁺ Multi 2 Tester (pH, Cond, TDS, Sal, Temp), 9532801
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Hach Pocket Pro Multi 2 Tester (pH Cond TDS Sal Temp) Replacement Sensor 9532801
$194.00

Mfr. Part # 9532801

Product # 702554

Hach Replacement Sensor for Pocket Pro⁺ Multi 1 Tester (Cond, TDS, Sal, Temp), 9532701
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Hach Pocket Pro Multi 1 Tester (Cond TDS Sal Temp) Replacement Sensor 9532701
$159.00

Mfr. Part # 9532701

Product # 702552

Hach Pocket Pro+ Multi 1 Tester for Cond/TDS/Salinity w/ Replaceable Sensor, 9532700
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Hach Pocket Pro+ Multi 1 Tester for Cond/TDS/Salinity with Replaceable Sensor 9532700
$329.00

Mfr. Part # 9532700

Product # 702551

Hach Pocket Pro Salinity Tester, 9531600
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Hach Pocket Pro Salinity Tester, 9531600
$223.00

Mfr. Part # 9531600

Product # 702544

Hach Pocket Pro High Range TDS Tester, 9531500
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Hach Pocket Pro High Range Water Conductivity Meter Tester 9531500
$195.00

Mfr. Part # 9531500

Product # 702543

Hach Pocket Pro Low Range TDS Tester, 9531400
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Hach Pocket Pro Low Range Water Conductivity Meter Tester 9531400
$195.00

Mfr. Part # 9531400

Product # 702542

Hach Pocket Pro High Range TDS Tester, 9531300
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Hach Pocket Pro High Range TDS Tester, 9531300
$195.00

Mfr. Part # 9531300

Product # 702541

Hach Pocket Pro Low Range TDS Tester, 9531200
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Hach Pocket Pro Low Range TDS Tester, 9531200
$201.00

Mfr. Part # 9531200

Product # 702540

Hach Replacement TDS sensor for Sension+ 5049 multisensor, LZW9172.99
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Hach Replacement TDS Sensor for Sension+ 5049 Multisensor LZW9172.99
$555.00

Mfr. Part # LZW9172.99

Product # 703809

Hach Printed tubes for TDS calibration, 3 x 10 mL, for portable Sension+, LZW9138.99
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Hach Printed Tubes for TDS Calibration 3x10mL for Portable Sension+ LZW9138.99
$19.09

Mfr. Part # LZW9138.99

Product # 703804

Hach Sension+ 5060 Portable Platinum TDS Cell for General Applications, LZW5060.97.0002
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Hach Sension+ 5060 Portable Platinum TDS Cell for General Applications, LZW5060.97.0002
$641.00

Mfr. Part # LZW5060.97.0002

Product # 703786

Hach Sension+ 5070 Laboratory Platinum TDS Cell for General Applications, LZW5070.97.0002
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Hach Sension+ 5070 Laboratory Platinum TDS Cell for General Applications, LZW5070.97.0002
$659.00

Mfr. Part # LZW5070.97.0002

Product # 703788

Hach Sension+ 5062 Portable Titanium TDS Cell for Difficult Applications, LZW5062.97.0002
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Hach Sension+ 5062 Portable Titanium TDS Cell for Difficult Applications, LZW5062.97.0002
$682.00

Mfr. Part # LZW5062.97.0002

Product # 703787

Hach Sension+ 5059 Portable Multi-Parameter Electrode: pH, TDS & Temperature, LZW5059.97.0002
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Hach Sension+ 5059 Portable Multi-Parameter Electrode pH TDS & Temperature LZW5059.97.0002
$806.00

Mfr. Part # LZW5059.97.0002

Product # 703785

Hach Sension+ 5048 Portable Multi-Parameter Electrode: pH, TDS, ORP & Temperature, LZW5048.97.0002
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Hach Sension+ 5048 Portable Multi-Parameter Electrode pH TDS ORP & Temperature LZW5048.97.0002
$917.00

Mfr. Part # LZW5048.97.0002

Product # 703777

Hach Gallic Acid Solution, 50 mL SCDB, 1442326
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Hach Gallic Acid Solution, 50 mL SCDB, 1442326
$32.39

Mfr. Part # 1442326

Product # 701025

Hach Sodium Chloride Standard Solution, 491mg/L NaCl (1000 µS/cm), 1L, 1440053
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Hach Sodium Chloride Standard Solution, 491 mg/L NaCl (1000 µS/cm), 1 L, 1440053
$70.85

Mfr. Part # 1440053

Product # 701021

Hach Conductivity Standard Solution, 1000 µS/cm,NaCl, 50 mL, 1440026
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Hach Conductivity Standard Solution, 1000 µS/cm, NaCl, 50 mL, 1440026
$17.75

Mfr. Part # 1440026

Product # 701018

Hach Sodium Chloride Standard Solution, 85.47 mg/L (180 µS/cm), 1L, 2307553
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Hach Sodium Chloride Standard Solution, 85.47 mg/L (180 µS/cm), 1L, 2307553
$71.05

Mfr. Part # 2307553

Product # 701412

Hach Sodium Chloride Standard Solution, 18,000 µS/cm, 500 mL, 2307449
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Hach Sodium Chloride Standard Solution, 18000 µS/cm, 500 mL, 2307449
$52.55

Mfr. Part # 2307449

Product # 701410

Hach Conductivity Standard Solution, 18000 µS/cm, NaCl, 100 mL, 2307442
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Hach Conductivity Standard Solution, 18000 µS/cm, NaCl, 100 mL, 2307442
$25.89

Mfr. Part # 2307442

Product # 701409

Hach Conductivity Standard Solution, 1990 µS/cm, NaCl, 100 mL, 210542
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Hach Conductivity Standard Solution, 1990 µS/cm, NaCl, 100 mL, 210542
$27.25

Mfr. Part # 210542

Product # 700829

Hach 1990 µS/cm Conductivity Standard; (995 mg/L TDS, 1000 mg/L NaCl), 1L, 210553
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Hach 1990 µS/cm Conductivity Standard, 995 mg/L TDS, 1000 mg/L NaCl, 1 L, 210553
$71.05

Mfr. Part # 210553

Product # 700830

Hach Singlet™ Single-use Conductivity Standard Solution, 1413 µS/cm, KCl, 20 mL, 2771420
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Hach Singlet Single-use Conductivity Standard Solution 1413 S/cm KCl 20 mL 2771420
$80.75

Mfr. Part # 2771420

Product # 701913

Hach Singlet™ Single-use Conductivity Standard Solution, 12.88 mS/cm, KCl, 20 mL, 2771520
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Hach Singlet Single-use Conductivity Standard Solution 12.88 mS/cm KCl 20 mL 2771520
$80.75

Mfr. Part # 2771520

Product # 701914

Hach Singlet™ Single-use Conductivity Standard Solution, 147 µS/cm, KCl, 20 mL, 2771320
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Hach Singlet Single-use Conductivity Standard Solution 147 S/cm KCl 20 mL 2771320
$80.75

Mfr. Part # 2771320

Product # 701912

Hach Potassium Chloride Std Solution, 35.0 ppt Salinity, 53.0 mS/cm Conductivity, 500 mL, 2714349
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Hach Potassium Chloride Std Solution, 35.0 ppt Salinity, 53.0 mS/cm Conductivity, 500 mL, 2714349
$72.70

Mfr. Part # 2714349

Product # 701860

Hach Certified Conductivity Standard Solution, 25 μS/cm, NaCl 25, 250 mL, S51M013
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Hach Certified Conductivity Standard Solution, 25 μS/cm, NaCl 25, 250 mL, S51M013
$99.40

Mfr. Part # S51M013

Product # 704047

Hach Certified Conductivity Standard Solution, 1015 µS/cm, 0.05% NaCl, 500 mL, S51M004
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Hach Certified Conductivity Standard Solution, 1015 µS/cm, 0.05% NaCl, 500 mL, S51M004
$112.00

Mfr. Part # S51M004

Product # 704046

Hach Certified OIML Conductivity Standard Solution, 12.85 mS/cm, KCl 0.1D, 500 mL, S51M002
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Hach Certified OIML Conductivity Standard Solution, 12.85 mS/cm, KCl 0.1D, 500 mL, S51M002
$112.00

Mfr. Part # S51M002

Product # 704044

Hach Certified OIML Conductivity Standard Solution, 111.3 mS/cm, KCl 1D, 500 mL, S51M001
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Hach Certified OIML Conductivity Standard Solution, 111.3 mS/cm, KCl 1D, 500 mL, S51M001
$112.00

Mfr. Part # S51M001

Product # 704043

Hach Certified OIML Conductivity Standard Solution, 1408 µS/cm, KCl 0.01D, 500 mL, S51M003
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Hach Certified OIML Conductivity Standard Solution, 1408 µS/cm, KCl 0.01D, 500 mL, S51M003
$114.00

Mfr. Part # S51M003

Product # 704045