Chlorine Testing


Reliable chlorine measurement for water safety.


Chlorine testing kits and meters verify disinfection levels in water treatment. Essential for municipal, industrial, and environmental applications, these tools ensure regulatory compliance.

Hach Potassium Iodide Powder Pillows, pk/50, 2059996
Quick View
Hach Potassium Iodide Powder Pillows, pk/50, 2059996
$34.55

Mfr. Part # 2059996

Product # 701108

Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 1 L, 199953
Quick View
Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 1 L, 199953
$76.79

Mfr. Part # 199953

Product # 700815

Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 100 mL, 199942
Quick View
Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 100 mL, 199942
$24.39

Mfr. Part # 199942

Product # 700814

Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 3.78 L, 199917
Quick View
Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 3.78 L, 199917
$146.00

Mfr. Part # 199917

Product # 700813

Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.00564 N, 199901
Quick View
Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.00564 N, 199901
$33.69

Mfr. Part # 199901

Product # 700812

Hach Ferrous Ammonium Sulfate Solution. 0.25 N, 29 mL, 181133NC
Quick View
Hach Ferrous Ammonium Sulfate Solution, 0.25 N, 29 mL, 181133NC
$38.85

Mfr. Part # 181133NC

Product # 702646

Hach Acetate Buffer Solution, pH 4.0, 1 L, 1490953
Quick View
Hach Acetate Buffer Solution, pH 4.0, 1 L, 1490953
$108.00

Mfr. Part # 1490953

Product # 701068

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 500 mL, 2408549
Quick View
Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 500 mL, 2408549
$46.69

Mfr. Part # 2408549

Product # 701526

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 100 mL MDB, 2408532
Quick View
Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 100 mL MDB, 2408532
$26.65

Mfr. Part # 2408532

Product # 701525

Hach Iodine Standard Solution, 0.0282 N, 1 L, 2333353
Quick View
Hach Iodine Standard Solution, 0.0282 N, 1 L, 2333353
$54.65

Mfr. Part # 2333353

Product # 701449

Hach Ferrous Ethylenediammonium Sulfate Digital Titrator Cartridge, 0.00564 N, 2292301
Quick View
Hach Ferrous Ethylenediammonium Sulfate Digital Titrator Cartridge, 0.00564 N, 2292301
$29.59

Mfr. Part # 2292301

Product # 701395

Hach Buffer, Phosphate Type, pH 7.0, 1 L, 2155353
Quick View
Hach Buffer, Phosphate Type, pH 7.0, 1 L, 2155353
$69.55

Mfr. Part # 2155353

Product # 701260

Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.0451 N, 2142001
Quick View
Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.0451 N, 2142001
$27.50

Mfr. Part # 2142001

Product # 701254

Hach Phenylarsine Oxide (PAO) Titrant, 0.00564N, 500 mL, 2700349
Quick View
Hach Phenylarsine Oxide (PAO) Titrant, 0.00564N, 500 mL, 2700349
$39.85

Mfr. Part # 2700349

Product # 701853

Hach Hypochlorite (Bleach) Reagent Set (HR), for Digital Titrator, 2687000
Quick View
Hach Hypochlorite (Bleach) Reagent Set (HR), for Digital Titrator, 2687000
$204.00

Mfr. Part # 2687000

Product # 701841

Hach Sodium Thiosulfate (Stabilized) Digital Titrator Cartridge, 2.26 N, 2686901
Quick View
Hach Sodium Thiosulfate (Stabilized) Digital Titrator Cartridge, 2.26 N, 2686901
$33.69

Mfr. Part # 2686901

Product # 701840

Hach Sodium Thiosulfate Solution, 2.12N 100 mL, 2686832
Quick View
Hach Sodium Thiosulfate Solution, 2.12N, 100 mL, 2686832
$59.05

Mfr. Part # 2686832

Product # 701839

Hach Chlorine (Free and Total) Reagent Set, DPD, 10 mL, 2459500
Quick View
Hach Chlorine (Free and Total) Reagent Set DPD 10mL 2459500
$74.05

Mfr. Part # 2459500

Product # 701617

Hach DPD Oxalate, 25 g, 608424
Quick View
Hach DPD Oxalate, 25 g, 608424
$124.00

Mfr. Part # 608424

Product # 700906

Hach Sulfuric Acid Standard Solution, 5.25 N, 1 L, 244953
Quick View
Hach Sulfuric Acid Standard Solution, 5.25 N, 1 L, 244953
$36.35

Mfr. Part # 244953

Product # 700877

Hach Chlorine (Free and Total) Reagent Set, DPD FEAS, Digital Titrator, 2445300
Quick View
Hach Chlorine (Free & Total) Reagent Set DPD FEAS Digital Titrator 2445300
$110.00

Mfr. Part # 2445300

Product # 701595

Hach Sodium Thiosulfate Standard Solution, 0.1 N, 1 L, 32353
Quick View
Hach Sodium Thiosulfate Standard Solution, 0.1 N, 1 L, 32353
$39.20

Mfr. Part # 32353

Product # 700623

Hach Reagent set, chlorine, DPD free & total chlorine, 25 mL sample, 2440400
Quick View
Hach Reagent Set, Chlorine, DPD Free & Total Chlorine, 25 mL Sample, 2440400
$84.55

Mfr. Part # 2440400

Product # 701588

Hach Chlorine (Free & Total) Reagent Set, DPD 5 mL, 2438800
Quick View
Hach Chlorine (Free & Total) Reagent Set DPD 5mL 2438800
$62.15

Mfr. Part # 2438800

Product # 701582

Hach Chlorine (Total) Reagent Set for CN-65 Test Kit, 2438600
Quick View
Hach Chlorine (Total) Reagent Set for CN-65 Test Kit, 2438600
$98.79

Mfr. Part # 2438600

Product # 701581

Hach Chlorine (Total) Reagent Set for CN-21P, 2437700
Quick View
Hach Chlorine (Total) Reagent Set for CN-21P, 2437700
$81.89

Mfr. Part # 2437700

Product # 701578

Hach Freechlor F Reagent Solution, 50 mL, 2964926
Quick View
Hach Freechlor F Reagent Solution, 50 mL, 2964926
$21.55

Mfr. Part # 2964926

Product # 702008

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.0246 N, 100 mL MDB, 2409232
Quick View
Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.0246 N, 100 mL MDB, 2409232
$26.65

Mfr. Part # 2409232

Product # 701534

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.0246 N, 500 mL, 2409249
Quick View
Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.0246 N, 500 mL, 2409249
$33.69

Mfr. Part # 2409249

Product # 701535

Hach Sodium Thiosulfate Digital Titrator Cartridge, Stabilized, 0.02256 N, 2409101
Quick View
Hach Sodium Thiosulfate Digital Titrator Cartridge, Stabilized, 0.02256 N, 2409101
$33.69

Mfr. Part # 2409101

Product # 701533

Hach Potassium Iodide Swiftest™ Bulk Dispenser, with Potassium Iodide Refill Vial, 2834100
Quick View
Hach Potassium Iodide Swiftest Bulk Dispenser w/ Potassium Iodide Refill Vial 2834100
$149.00

Mfr. Part # 2834100

Product # 701961

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00564 N, 1 L, 2408853
Quick View
Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00564 N, 1 L, 2408853
$56.50

Mfr. Part # 2408853

Product # 701529

Hach Chlorine (Total) Test Kit, Model CN-21P, 2444400
Quick View
Hach Chlorine (Total) Test Kit, Model CN-21P, 2444400
$109.00

Mfr. Part # 2444400

Product # 701593

Hach Sodium Thiosulfate Digital Titrator Cartridge, 0.113 N, 2267301
Quick View
Hach Sodium Thiosulfate Digital Titrator Cartridge, 0.113 N, 2267301
$33.69

Mfr. Part # 2267301

Product # 701363

Hach Buffer, Phosphate Type, pH 7, for Amperometric Chlorine, 100 mL MDB, 2155332
Quick View
Hach Buffer, Phosphate Type, pH 7, for Amperometric Chlorine, 100 mL MDB, 2155332
$30.25

Mfr. Part # 2155332

Product # 701259

Hach DPD Total Chlorine Reagent Powder Pillows, 10 mL, pk/300, 2105603
Quick View
Hach DPD Total Chlorine Reagent Powder Pillows, 10 mL, pk/300, 2105603
$95.79

Mfr. Part # 2105603

Product # 700034

Hach DPD Free Chlorine Reagent Powder Pillows, 10 mL, pk/300, 2105503
Quick View
Hach DPD Free Chlorine Reagent Powder Pillows, 10 mL, pk/300, 2105503
$88.25

Mfr. Part # 2105503

Product # 700031

Hach Acetate Buffer Solution, pH 4.0, 100 mL, 1490932
Quick View
Hach Acetate Buffer Solution, pH 4.0, 100 mL, 1490932
$32.09

Mfr. Part # 1490932

Product # 701067

Hach Potassium Iodide SwifTest™ Dispenser Refill, 107760
Quick View
Hach Potassium Iodide SwifTest Dispenser Refill 107760
$87.05

Mfr. Part # 107760

Product # 700734

Hach Potassium Iodide Powder Pillows, PK/100, 107799
Quick View
Hach Potassium Iodide Powder Pillows, Pack of 100, 107799
$35.65

Mfr. Part # 107799

Product # 700735

Hach Sulfamic Acid Powder Pillows, pk/100, 105599
Quick View
Hach Sulfamic Acid Powder Pillows, pk/100, 105599
$28.19

Mfr. Part # 105599

Product # 700726

Hach Sodium Arsenite Solution, 5.0 g/L, 100 mL, 104732
Quick View
Hach Sodium Arsenite Solution, 5.0 g/L, 100 mL, 104732
$23.69

Mfr. Part # 104732

Product # 700725

Hach Free Chlorine Test Strips, 0-600 mg/L, 100 tests, 2890200
Quick View
Hach Free Chlorine Test Strips, 0-600 mg/L, 100 Tests, 2890200
$42.35

Mfr. Part # 2890200

Product # 701978

Hach Free & Total Chlorine Test Strips, 0-10 mg/L, 2745050
Quick View
Hach Free & Total Chlorine Test Strips, 0-10 mg/L, 2745050
$31.69

Mfr. Part # 2745050

Product # 701875

Hach Total Chlorine Color Disc Test Kit, Model CN-66T, 223103
Quick View
Hach Total Chlorine Color Disc Test Kit, Model CN-66T, 223103
$106.00

Mfr. Part # 223103

Product # 700002

Hach Total Chlorine Chemkey® Reagents, 0.04-10 mg/L Cl2, Qty 300, 8499400
Quick View
Hach Chemkey Reagents Total Chlorine 0.04-10 mg/L Cl2 Qty 300 8499400
$321.00

Mfr. Part # 8499400

Product # 700116

Hach Total Chlorine Chemkey® Reagents, 0.04-10 mg/L Cl2, Box of 25, 9429100
Quick View
Hach Chemkey Reagents Total Chlorine 0.04-10 mg/L Cl2 25/Box 9429100
$29.45

Mfr. Part # 9429100

Product # 700117

Hach Peracetic Acid Chemkey® Reagents, 0.04-50.0 mg/L PAA, 25/Bo, 8635200
Quick View
Hach Chemkey Reagents Peracetic Acid 0.04-50.0 mg/L PAA 25/Bo 8635200
$29.75

Mfr. Part # 8635200

Product # 700126