Chlorine Chemistries


Precise reagents for chlorine testing applications.


Obtain accurate chlorine readings with high-quality chemistries. These Hach reagents are essential for municipal water systems, industrial processes and laboratory analysis.

Hach Sodium Thiosulfate, 1.0 N, 50 mL SCDB, 35126
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Hach Sodium Thiosulfate, 1.0 N, 50 mL SCDB, 35126
$22.79

Mfr. Part # 35126

Product # 707918

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
$26.95

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
$201.80

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
$19.30

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
$171.00

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
$23.20

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
$173.30

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
$23.10

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
$23.20

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
$171.00

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
$175.25

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
$27.95

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
$21.20

Mfr. Part # LAMOTTE 4128-H

Product # 707863

Core & Main Sodium Thiosulfate, 1.0N, 1 L
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Core & Main Sodium Thiosulfate, 1.0N, 1 L
$26.90

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
$20.65

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
$179.15

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
$47.55

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
$31.45

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
$209.95

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
$152.50

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
$93.30

Mfr. Part # PO4400-P

Product # 707155

Core & Main Iodide Reagent, 1 L
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Core & Main Iodide Reagent, 1 L
$51.05

Mfr. Part # IO2810-Q

Product # 707082

Core & Main Iodide Reagent, 500 mL
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Core & Main Iodide Reagent, 500 mL
$37.10

Mfr. Part # IO2810-P

Product # 707081

LaMotte Dpd 1B Free Chlorine Rgt *C2
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LaMotte DPD 1B Liquid Free Chlorine Reagent *C2 60mL
$16.69

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
$16.69

Mfr. Part # LAMOTTE P-6740-H

Product # 707558

Hach Potassium Iodide Powder Pillows, pk/50, 2059996
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Hach Potassium Iodide Powder Pillows, pk/50, 2059996
$35.85

Mfr. Part # 2059996

Product # 701108

Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 1 L, 199953
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Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 1 L, 199953
$79.65

Mfr. Part # 199953

Product # 700815

Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 100 mL, 199942
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Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 100 mL, 199942
$25.30

Mfr. Part # 199942

Product # 700814

Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 3.78 L, 199917
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Hach Phenylarsine Oxide (PAO) Standard Solution, 0.00564 N, 3.78 L, 199917
$152.00

Mfr. Part # 199917

Product # 700813

Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.00564 N, 199901
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Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.00564 N, 199901
$34.95

Mfr. Part # 199901

Product # 700812

Hach Ferrous Ammonium Sulfate Solution. 0.25 N, 29 mL, 181133NC
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Hach Ferrous Ammonium Sulfate Solution, 0.25 N, 29 mL, 181133NC
$40.29

Mfr. Part # 181133NC

Product # 702646

Hach Acetate Buffer Solution, pH 4.0, 1 L, 1490953
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Hach Acetate Buffer Solution, pH 4.0, 1 L, 1490953
$112.00

Mfr. Part # 1490953

Product # 701068

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 500 mL, 2408549
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Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 500 mL, 2408549
$48.45

Mfr. Part # 2408549

Product # 701526

Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 100 mL MDB, 2408532
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Hach Sodium Thiosulfate Standard Solution, Stabilized, 0.00246 N, 100 mL MDB, 2408532
$27.65

Mfr. Part # 2408532

Product # 701525

Hach Iodine Standard Solution, 0.0282 N, 1 L, 2333353
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Hach Iodine Standard Solution, 0.0282 N, 1 L, 2333353
$56.69

Mfr. Part # 2333353

Product # 701449

Hach Ferrous Ethylenediammonium Sulfate Digital Titrator Cartridge, 0.00564 N, 2292301
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Hach Ferrous Ethylenediammonium Sulfate Digital Titrator Cartridge, 0.00564 N, 2292301
$30.69

Mfr. Part # 2292301

Product # 701395

Hach Buffer, Phosphate Type, pH 7.0, 1 L, 2155353
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Hach Buffer, Phosphate Type, pH 7.0, 1 L, 2155353
$72.15

Mfr. Part # 2155353

Product # 701260

Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.0451 N, 2142001
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Hach Phenylarsine Oxide (PAO) Digital Titrator Cartridge, 0.0451 N, 2142001
$28.55

Mfr. Part # 2142001

Product # 701254

Hach Phenylarsine Oxide (PAO) Titrant, 0.00564N, 500 mL, 2700349
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Hach Phenylarsine Oxide (PAO) Titrant, 0.00564N, 500 mL, 2700349
$41.35

Mfr. Part # 2700349

Product # 701853

Hach Hypochlorite (Bleach) Reagent Set (HR), for Digital Titrator, 2687000
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Hach Hypochlorite (Bleach) Reagent Set (HR), for Digital Titrator, 2687000
$212.00

Mfr. Part # 2687000

Product # 701841

Hach Sodium Thiosulfate (Stabilized) Digital Titrator Cartridge, 2.26 N, 2686901
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Hach Sodium Thiosulfate (Stabilized) Digital Titrator Cartridge, 2.26 N, 2686901
$34.95

Mfr. Part # 2686901

Product # 701840

Hach Sodium Thiosulfate Solution, 2.12N 100 mL, 2686832
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Hach Sodium Thiosulfate Solution, 2.12N, 100 mL, 2686832
$61.25

Mfr. Part # 2686832

Product # 701839

Hach Chlorine (Free and Total) Reagent Set, DPD, 10 mL, 2459500
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Hach Chlorine (Free and Total) Reagent Set DPD 10mL 2459500
$76.79

Mfr. Part # 2459500

Product # 701617

Hach DPD Oxalate, 25 g, 608424
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Hach DPD Oxalate, 25 g, 608424
$129.00

Mfr. Part # 608424

Product # 700906

Hach Sulfuric Acid Standard Solution, 5.25 N, 1 L, 244953
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Hach Sulfuric Acid Standard Solution, 5.25 N, 1 L, 244953
$37.70

Mfr. Part # 244953

Product # 700877

Hach Chlorine (Free and Total) Reagent Set, DPD FEAS, Digital Titrator, 2445300
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Hach Chlorine (Free & Total) Reagent Set DPD FEAS Digital Titrator 2445300
$115.00

Mfr. Part # 2445300

Product # 701595

Hach Sodium Thiosulfate Standard Solution, 0.1 N, 1 L, 32353
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Hach Sodium Thiosulfate Standard Solution, 0.1 N, 1 L, 32353
$40.69

Mfr. Part # 32353

Product # 700623