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 Free Chlorine TNTplus Vial Test, 0.05-2.00 mg/L Cl₂ , 24 Tests, TNT866
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Hach Free Chlorine TNTplus Vial Test, 0.05-2.00 mg/L Cl₂, 24 Tests, TNT866
$64.05

Mfr. Part # TNT866

Product # 700179

Hach Free Chlorine Color Disc Test Kit, Model CN-66F, 223102
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Hach Free Chlorine Color Disc Test Kit, Model CN-66F, 223102
$93.49

Mfr. Part # 223102

Product # 700001

Hach Free Chlorine Chemkey® Reagents, 0.04-4.00 mg/L Cl2, Qty 300, 8499300
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Hach Chemkey Reagents Free Chlorine 0.04-4.00 mg/L Cl2 Qty 300 8499300
$355.00

Mfr. Part # 8499300

Product # 700114

Hach Free Chlorine Chemkey® Reagents, 0.04-4.00 mg/L Cl2, Box of 25, 9429000
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Hach Chemkey Reagents Free Chlorine 0.04-4.00 mg/L Cl2 25/Box 9429000
$29.05

Mfr. Part # 9429000

Product # 700115

Hach Free and Total Chlorine TNTplus Vial Test, 0.05-2.00 mg/L Cl₂ , 24 Tests, TNT867
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Hach Free & Total Chlorine TNTplus Vial Test 0.05-2.00 mg/L Cl 24 Tests TNT867
$67.85

Mfr. Part # TNT867

Product # 700180

Hach DPD Total Chlorine Swiftest™ Dispenser Refill Vial, Approximately 250 Tests, 2105660
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Hach DPD Total Chlorine Swiftest Dispenser Refill Vial Approximately 250 Tests 2105660
$73.55

Mfr. Part # 2105660

Product # 700027

Hach DPD Total Chlorine Reagent, Swiftest™ Dispenser, 2802400
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Hach DPD Total Chlorine Reagent Swiftest Dispenser 2802400
$96.79

Mfr. Part # 2802400

Product # 700019

Hach DPD Total Chlorine Reagent Accuvac® Ampules, pk/25, 2503025
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Hach DPD Total Chlorine Reagent Accuvac Ampules pk/25 2503025
$42.90

Mfr. Part # 2503025

Product # 701650

Hach DPD Free Chlorine Reagent, Swiftest™ Dispenser, 2802300
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Hach DPD Free Chlorine Reagent Swiftest Dispenser 2802300
$89.05

Mfr. Part # 2802300

Product # 700018

Hach DPD Free Chlorine Reagent, Swiftest™ Dispenser Refill Vial, Approximately 250 Tests, 2105560
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Hach DPD Free Chlorine Reagent Swiftest Dispenser Refill Vial Approximately 250 Tests 2105560
$67.69

Mfr. Part # 2105560

Product # 700026

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Hach DPD Reagent Powder Pillows
$15.30

Mfr. Part #

Product # 700014

Hach DPD Free Chlorine Reagent Accuvac® Ampules, pk/25, 2502025
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Hach DPD Free Chlorine Reagent Accuvac Ampules pk/25 2502025
$43.95

Mfr. Part # 2502025

Product # 701649

Hach DPD Chlorine Indicator Solution Ampules, ULR, pk/20, 2493220
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Hach DPD Chlorine Indicator Solution Ampules, ULR, pk/20, 2493220
$37.39

Mfr. Part # 2493220

Product # 701638

Hach Chlorine Reagent Set (Total), Ultra Low Range DPD, 2563000
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Hach Chlorine Reagent Set (Total), ULR DPD, 2563000
$82.09

Mfr. Part # 2563000

Product # 701692

Hach Chlorine (Free & Total) Color Disc Test Kit, Model CN-66, 223101
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Hach Chlorine (Free & Total) Color Disc Test Kit, Model CN-66, 223101
$108.00

Mfr. Part # 223101

Product # 700003

Hach Chlorine (Free and Total) Test Kit, Model CN-80, 2129000
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Hach Chlorine (Free & Total) Test Kit, Model CN-80, 2129000
$219.00

Mfr. Part # 2129000

Product # 700006

Hach Chlorine (Free & Total) Test Kit, Model CN-70, 1454200
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Hach Chlorine (Free & Total) Test Kit, Model CN-70, 1454200
$142.00

Mfr. Part # 1454200

Product # 700005

Hach Buffer Solution, ULR Chlorine, pk/20, 2493120
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Hach Buffer Solution, ULR Chlorine, pk/20, 2493120
$41.49

Mfr. Part # 2493120

Product # 701637

Hach Blanking Reagent for ULR Chlorine, 29 mL, 2493023
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Hach Blanking Reagent for ULR Chlorine, 29 mL, 2493023
$21.19

Mfr. Part # 2493023

Product # 701636

Hach Chlorine Dosing Solution Ampules, 1000 - 1500 mg/L as Cl2, 16/pk, 2504810
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Hach Chlorine Dosing Solution Ampules, 1000 - 1500 mg/L as Cl2, 16/pk, 2504810
$87.55

Mfr. Part # 2504810

Product # 701652

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.0375 N, 1 L, 2409453
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Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.0375 N, 1 L, 2409453
$76.59

Mfr. Part # 2409453

Product # 701539

Hach Chlorine Standard Solution, 50-75 mg/L as Cl₂, 1426810
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Hach Chlorine Standard Solution, 50-75 mg/L as Cl₂, 1426810
$91.55

Mfr. Part # 1426810

Product # 700988

Hach Chlorine Standard Solution, 50-75 mg/L as Cl2, 2 mL PourRite, Pack of 20, 1426820
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Hach Chlorine Standard Solution, 50-75 mg/L as Cl2, 2 mL PourRite, Pack of 20, 1426820
$83.25

Mfr. Part # 1426820

Product # 700989

Hach Sodium Thiosulfate Standard Solution, 0.1 N, 100 mL MDB, 32332
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Hach Sodium Thiosulfate Standard Solution, 0.1 N, 100 mL MDB, 32332
$24.20

Mfr. Part # 32332

Product # 700622

Hach Chlorine Standard Solution, 25-30 mg/L as Cl₂, 2 mL PourRite, Pack of 20, 2630020
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Hach Chlorine Standard Solution, 25-30 mg/L as Cl₂, 2 mL PourRite, Pack of 20, 2630020
$80.25

Mfr. Part # 2630020

Product # 701772

Hach SpecCheck Secondary Gel Standards Set, DPD Chlorine, MR, 2980500
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Hach SpecCheck Secondary Gel Standards Set, DPD Chlorine, MR, 2980500
$318.00

Mfr. Part # 2980500

Product # 700025

Hach SpecCheck Secondary Gel Standards Set, DPD Chlorine, LR, 2635300
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Hach SpecCheck Secondary Gel Standards Set, DPD Chlorine, LR, 2635300
$291.00

Mfr. Part # 2635300

Product # 700020

Hach SpecCheck Secondary Gel Standards Set, DPD Chlorine, HR, 2893300
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Hach SpecCheck Secondary Gel Standards Set, DPD Chlorine, HR, 2893300
$293.00

Mfr. Part # 2893300

Product # 700021

HF Scientific DPD Powder Pop Tablet Dispenser, Total Chlorine, 10 mL Sample Size, 1000 Tests
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HF Scientific DPD Powder Pop Dispenser, Tablet Formulation, 10 mL Sample Size
$34.25

Mfr. Part #

Product # 707694

HF Scientific DPD Powder Pop Dispenser, Total Chlorine, 5 mL Sample Size, 1000 Tests
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HF Scientific DPD Powder Pop Dispenser Powder Formulation
$28.20

Mfr. Part #

Product # 707563

Core & Main DPD Indicator Solution, 1 L
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Core & Main DPD Indicator Solution, 1 L
$56.80

Mfr. Part # DP6120-Q

Product # 706986

Core & Main Starch Indicator Solution, 2.0% w/v, 500 mL
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Core & Main Starch Indicator Solution, 2.0% w/v, 500 mL
$34.00

Mfr. Part # ST5025-P

Product # 707277

Core & Main Starch Indicator Solution, 2.0% w/v, 1 L
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Core & Main Starch Indicator Solution, 2.0% w/v, 1 L
$52.70

Mfr. Part # ST5025-Q

Product # 707278

Core & Main Starch Indicator Solution, 1.0% w/v, 500 mL
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Core & Main Starch Indicator Solution, 1.0% w/v, 500 mL
$18.65

Mfr. Part # ST5010-P

Product # 707275

Core & Main Starch Indicator Solution, 1.0% w/v, 1 L
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Core & Main Starch Indicator Solution, 1.0% w/v, 1 L
$27.65

Mfr. Part # ST5010-Q

Product # 707276

Core & Main Starch Indicator Solution, 0.5% w/v, 500 mL
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Core & Main Starch Indicator Solution, 0.5% w/v, 500 mL
$14.60

Mfr. Part # ST5005-P

Product # 707272

Core & Main Starch Indicator Solution, 0.5% w/v, 4 L
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Core & Main Starch Indicator Solution, 0.5% w/v, 4 L
$72.75

Mfr. Part # ST5005-G

Product # 707274

Core & Main Starch Indicator Solution, 0.5%, 1 L
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Core & Main Starch Indicator Solution, 0.5%, 1 L
$25.15

Mfr. Part # ST5005-Q

Product # 707273

Core & Main Acetate Buffer Solution, pH 4, 500 mL
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Core & Main Acetate Buffer Solution, pH 4, 500 mL
$22.50

Mfr. Part # AB4150-P

Product # 706881

Core & Main Acetate Buffer Solution, pH 4, 1 L
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Core & Main Acetate Buffer Solution, pH 4, 1 L
$37.75

Mfr. Part # AB4150-Q

Product # 706882

Core & Main Acetate Buffer Solution, pH 4, 4 L
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Core & Main Acetate Buffer Solution, pH 4, 4 L
$112.60

Mfr. Part # AB4150-G

Product # 706883

Core & Main Iodine Solution, 0.0282N, 500 mL
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Core & Main Iodine Solution, 0.0282N, 500 mL
$16.35

Mfr. Part # IO2889-P

Product # 707084

Core & Main Iodine Solution, 0.0282N, 1 L
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Core & Main Iodine Solution, 0.0282N, 1 L
$30.70

Mfr. Part # IO2889-Q

Product # 707085

Core & Main Iodine Solution, 0.025N, 500 mL
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Core & Main Iodine Solution, 0.025N, 500 mL
$16.35

Mfr. Part # IO2885-P

Product # 707083