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.

LaMotte DPD 1R Free Chlorine TesTabs®, Pack of 100 , 6999A-J
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LaMotte DPD 1R Free Chlorine TesTabs®, Pack of 100 , 6999A-J
$26.45

Mfr. Part # LaMotte 6999A-J

Product # 707896

LaMotte DPD 3R Total Chlorine TesTabs®, Pack of 1000, 6905A-M
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LaMotte DPD 3R Total Chlorine TesTabs®, Pack of 1000, 6905A-M
$189.95

Mfr. Part # LaMotte 6905A-M

Product # 707894

LaMotte Reagent Refill for 7894 Chlorine Test Kit, R-7894
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LaMotte Reagent Refill for 7894 Chlorine Test Kit, R-7894
$46.00

Mfr. Part # LAMOTTE R-7894

Product # 707879

LaMotte DPD 3 Total Chlorine Reagent, 60 mL, P-6743-H
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LaMotte DPD 3 Total Chlorine Reagent, 60 mL, P-6743-H
$18.95

Mfr. Part # LAMOTTE P-6743-H

Product # 707877

LaMotte DPD 3 Total Chlorine TesTabs®, Pack of 1000, 6197A-M
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LaMotte DPD 3 Total Chlorine TesTabs®, Pack of 1000, 6197A-M
$165.00

Mfr. Part # LAMOTTE 6197A-M

Product # 707876

LaMotte DPD 3 Total Chlorine TesTabs®, Pack of 100, 6197A-J
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LaMotte DPD 3 Total Chlorine TesTabs®, Pack of 100, 6197A-J
$22.00

Mfr. Part # LAMOTTE 6197A-J

Product # 707875

LaMotte DPD 4 Total Chlorine TesTabs®, Pack of 1000, 6906A-M
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LaMotte DPD 4 Total Chlorine TesTabs®, Pack of 1000, 6906A-M
$165.00

Mfr. Part # LAMOTTE 6906A-M

Product # 707874

LaMotte DPD 4 Total Chlorine TesTabs®, Pack of 100, 6906A-J
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LaMotte DPD 4 Total Chlorine TesTabs®, Pack of 100, 6906A-J
$22.00

Mfr. Part # LAMOTTE 6906A-J

Product # 707873

LaMotte DPD 1 Free Chlorine TesTabs®, Pack of 100, 6903A-J
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LaMotte DPD 1 Free Chlorine TesTabs®, Pack of 100, 6903A-J
$22.00

Mfr. Part # LAMOTTE 6903A-J

Product # 707872

LaMotte DPD 1 Free Chlorine TesTabs®, Pack of 1000, 6903A-M
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LaMotte DPD 1 Free Chlorine TesTabs®, Pack of 1000, 6903A-M
$165.00

Mfr. Part # LAMOTTE 6903A-M

Product # 707871

LaMotte DPD 4 RAPID TesTabs®, Pack of 1000, 6899A-M
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LaMotte DPD 4 RAPID TesTabs®, Pack of 1000, 6899A-M
$165.00

Mfr. Part # LAMOTTE 6899A-M

Product # 707870

LaMotte DPD 4 RAPID TesTabs®, Pack of 100, 6899A-J
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LaMotte DPD 4 RAPID TesTabs®, Pack of 100, 6899A-J
$23.10

Mfr. Part # LAMOTTE 6899A-J

Product # 707869

LaMotte Sodium Arsenite Solution, 60 mL, 4128-H
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LaMotte Sodium Arsenite Solution, 60 mL, 4128-H
$20.40

Mfr. Part # LAMOTTE 4128-H

Product # 707863

Thermo Scientific™ Orion™ Chlorine Electrode, Combination ISE, BNC, 9770BNWP
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Thermo Scientific Orion Chlorine Electrode Combination ISE BNC 9770BNWP
$1,050.00

Mfr. Part # 9770BNWP

Product # 706176

Hach 5 in 1 Water Quality Test Strips, 2755250
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Hach 5 in 1 Water Quality Test Strips, 2755250
$31.45

Mfr. Part # 2755250

Product # 701888

Hach SL250 - PPA Portable Parallel Analyzer, 9430250
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Hach SL250 - PPA Portable Parallel Analyzer, 9430250
$2,892.00

Mfr. Part # 9430250

Product # 707803

Hach DR300 Pocket Colorimeter, Chlorine & pH, with Box, LPV445.97.12110
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Hach DR300 Pocket Colorimeter Chlorine & pH with Box LPV445.97.12110
$711.00

Mfr. Part # LPV445.97.12110

Product # 700097

Hach Full SL1000 Portable Parallel AnalyzerⓇ (PPA) Nitrification Kit, 25632200
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Hach Full SL1000 Portable Parallel AnalyzerⓇ (PPA) Nitrification Kit, 25632200
$7,512.00

Mfr. Part # 25632200

Product # 700094

Hach Full SL1000 Portable Parallel AnalyzerⓇ (PPA) Kit, 8499000
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Hach Full SL1000 Portable Parallel AnalyzerⓇ (PPA) Kit, 8499000
$6,410.00

Mfr. Part # 8499000

Product # 700093

Hach SL1000 - PPA Portable Parallel Analyzer- Portable Colorimeter with USB, 9430000
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Hach SL1000 PPA Portable Parallel Analyzer Portable Colorimeter with USB 9430000
$5,257.00

Mfr. Part # 9430000

Product # 700092

Hach DR300 Pocket Colorimeter, Chlorine, Free + Total, MR, with Box, LPV445.97.62110
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Hach DR300 Pocket Colorimeter Chlorine Free & Total MR with Box LPV445.97.62110
$711.00

Mfr. Part # LPV445.97.62110

Product # 700022

Hach DR300 Pocket Colorimeter, Chlorine, Free + Total, LR/HR, with Box, LPV445.97.00110
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Hach DR300 Chlorine (Free and Total) Pocket Colorimeter, LPV445.97.00110
$711.00

Mfr. Part # LPV445.97.00110

Product # 700013

Core & Main Sodium Thiosulfate, 1.0N, 1 L
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Core & Main Sodium Thiosulfate, 1.0N, 1 L
$25.90

Mfr. Part # ST2965-Q

Product # 707269

Core & Main Sodium Thiosulfate, 1.0N, 500 mL
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Core & Main Sodium Thiosulfate, 1.0N, 500 mL
$19.85

Mfr. Part # ST2965-P

Product # 707268

Core & Main Sodium Thiosulfate, 0.00564N, 4 L
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Core & Main Sodium Thiosulfate, 0.00564N, 4 L
$172.45

Mfr. Part # ST2701-G

Product # 707258

Core & Main Sodium Thiosulfate, 0.00564N, 1 L
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Core & Main Sodium Thiosulfate, 0.00564N, 1 L
$45.80

Mfr. Part # ST2701-Q

Product # 707257

Core & Main Sodium Thiosulfate, 0.00564N, 500 mL
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Core & Main Sodium Thiosulfate, 0.00564N, 500 mL
$30.30

Mfr. Part # ST2701-P

Product # 707256

Core & Main Phenylarsine Oxide, 0.00564N, 4 L
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Core & Main Phenylarsine Oxide, 0.00564N, 4 L
$199.95

Mfr. Part # PO4400-G

Product # 707157

Core & Main Phenylarsine Oxide, 0.00564N, 1 L
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Core & Main Phenylarsine Oxide, 0.00564N, 1 L
$146.80

Mfr. Part # PO4400-Q

Product # 707156

Core & Main Phenylarsine Oxide, 0.00564N, 500 mL
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Core & Main Phenylarsine Oxide, 0.00564N, 500 mL
$89.80

Mfr. Part # PO4400-P

Product # 707155

Core & Main Iodide Reagent, 1 L
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Core & Main Iodide Reagent, 1 L
$45.00

Mfr. Part # IO2810-Q

Product # 707082

Core & Main Iodide Reagent, 500 mL
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Core & Main Iodide Reagent, 500 mL
$33.95

Mfr. Part # IO2810-P

Product # 707081

Core & Main Chlorine Standard, 1000ppm as Cl₂, 1 L
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Core & Main Chlorine Standard, 1000ppm as Cl₂, 1 L
$45.85

Mfr. Part # CH9210-Q

Product # 706973

Core & Main Chlorine Standard, 1000ppm as Cl₂, 500 mL
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Core & Main Chlorine Standard, 1000ppm as Cl₂, 500 mL
$36.10

Mfr. Part # CH9210-P

Product # 706972

Core & Main Chlorine Standard, 100ppm as Cl₂, 1 L
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Core & Main Chlorine Standard, 100ppm as Cl₂, 1 L
$37.65

Mfr. Part # CH9200-Q

Product # 706971

Core & Main Chlorine Standard, 100ppm as Cl₂, 500 mL
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Core & Main Chlorine Standard, 100ppm as Cl₂, 500 mL
$25.10

Mfr. Part # CH9200-P

Product # 706970

LaMotte Dpd 1B Free Chlorine Rgt *C2
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LaMotte DPD 1B Liquid Free Chlorine Reagent *C2 60mL
$15.95

Mfr. Part # LAMOTTE P-6741-H

Product # 707559

LaMotte Dpd 1A Free Chlorine Reagent
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LaMotte DPD 1A Liquid Free Chlorine Reagent 60mL
$15.95

Mfr. Part # LAMOTTE P-6740-H

Product # 707558

Hach DPD Chlorine Color Disc, 990200
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Hach DPD Chlorine Color Disc, 990200
$89.05

Mfr. Part # 990200

Product # 700910

Hach Chlorine (Total) Test Kit, Model CN-65, 225401
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Hach Chlorine (Total) Test Kit, Model CN-65, 225401
$151.00

Mfr. Part # 225401

Product # 700863

Hach Chlorine, Hardness, Iron, & pH Test Kit, Model CN-39WR, 223002
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Hach Chlorine, Hardness, Iron, & pH Test Kit, Model CN-39WR, 223002
$386.00

Mfr. Part # 223002

Product # 700851

Hach Total Chlorine Test Kit, Model CN-70T, 1454202
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Hach Total Chlorine Test Kit, Model CN-70T, 1454202
$149.00

Mfr. Part # 1454202

Product # 701032

Hach Free Chlorine Test Kit, Model CN-70F, 1454201
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Hach Free Chlorine Test Kit, Model CN-70F, 1454201
$146.00

Mfr. Part # 1454201

Product # 701031

Hach Free & Total Chlorine Test Strips, 0-10 mg/L, Individually Wrapped, 250/pk, 2793944
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Hach Free & Total Chlorine Test Strips, 0-10 mg/L, Individually Wrapped, 250/pk, 2793944
$340.00

Mfr. Part # 2793944

Product # 701922

Hach Hypochlorite Test Kit, Model CN-HR, 2687200
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Hach Hypochlorite Test Kit, Model CN-HR, 2687200
$196.00

Mfr. Part # 2687200

Product # 701843

Hach Hypochlorite Test Kit, Model CN-HRDT, 2687100
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Hach Hypochlorite Test Kit, Model CN-HRDT, 2687100
$445.00

Mfr. Part # 2687100

Product # 701842

Hach Total Chlorine Test Kit, Model CN-DT, 20-2000 mg/L, 2471100
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Hach Total Chlorine Test Kit, Model CN-DT, 20-2000 mg/L, 2471100
$426.00

Mfr. Part # 2471100

Product # 701625

Hach Chlorine (Free & Total) & pH Test Kit, Model CN-67, 1411100
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Hach Chlorine (Free & Total) & pH Test Kit, Model CN-67, 1411100
$192.00

Mfr. Part # 1411100

Product # 700004