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Home  >  Colorimetry Reagents

Colorimetry Reagents

Colorimetry Reagents

For centuries scientists have used a colorimetric reagent to determine quality in compounds. Technology has made using a colorimetric reagent a bit easier but no less potent. Colorimetry tests are quick and easy and often cost less than alternative test methods. A colorimeter is an optical measurement that uses color to quantitatively determine the concentration of a compound in a sample. A colorimetric reagent for the compound of interest is added to the sample being tested. A color will develop in proportion to the level of compound present, and can be measured by the instrument. Many parameters have EPA approval and meet the regulatory requirements for many industries. Choose from single parameter or multiparameter colorimeters to meet your application. The process is founded upon Beer's Law; which describes the relationship between the amounts of light transmitted and the concentration of the sample. The typical instrument used in this process has one or more fixed wavelengths--to match the maxima (strong peak) of the components spectrum. In free chlorine the DPD spectrum has a maxima peak near 520nm, the wavelength for the test. If you want more information about selecting the right colorimetric reagent for your application contact a Cole-Parmer Technical Expert today.
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DPD Total Chlorine Reagent Powder Pillow Packs 25 mL 1000 Tests (Representative photo only)
EW-99560-61
Usually ships in 7 days.
$187.00 USD/PACKAGE

Qty:

DPD Total Chlorine Reagent Powder Pillow Packs 10 mL 1000 Tests (Representative photo only)
EW-99560-59
Usually ships in 6 days.
$170.00 USD/PACKAGE

Qty:

Guaranteed In-Stock Products EW-99574-05 Hach<small><sup>&reg;</sup></small> Test Kits

Hach Colorimeter Test Kit, total chlorine (USEPA), 0 to 2.0 ppm, 100/kit

Range 0 to 2.0 ppm,Brand HACH,Product Type Water Testing Kit
EW-99574-05
In stock.
$25.00 USD/EACH

Qty:

Guaranteed In-Stock Products Replacement free chlorine test kit for Oakton colorimeters 100 tests kit  (Representative photo only)

Replacement free chlorine test kit, for Oakton colorimeters, 100 tests/kit.

Brand Oakton,Product Type Water Testing Accessories
EW-35645-64
In stock.
$29.00 USD/EACH

Qty:

DPD Powder Pop Dispenser for Free Chlorine 1000 Tests 10 mL (Representative photo only)

DPD Powder Pop Dispenser for Free Chlorine, 1000 Tests, 10 mL

Brand DPD Powder Pop,Product Type Water Testing Kit
EW-99560-16
In stock.
$165.00 USD/PACKAGE

Qty:

EW-99574-14 Hach<small><sup>&reg;</sup></small> Test Kits

Hach Colorimeter Test Kit, total nitrogen (TNT), 0 to 25 ppm, 50/kit

Range 0 to 25 ppm,Brand HACH,Product Type Water Testing Kit
EW-99574-14
Usually ships in 6 days.
$166.00 USD/EACH

Qty:

Guaranteed In-Stock Products EW-99574-04 Hach<small><sup>&reg;</sup></small> Test Kits

Hach Colorimeter Test Kit, free chlorine (USEPA), 0 to 2.0 ppm, 100/kit

Range 0 to 2.0 ppm,Brand HACH,Product Type Water Testing Kit
EW-99574-04
In stock.
$25.00 USD/EACH

Qty:

DPD Powder Pop Dispenser for Total Chlorine 1000 Tests 5 mL (Representative photo only)

DPD Powder Pop Dispenser for Total Chlorine, 1000 Tests, 5 mL

Brand DPD Powder Pop,Product Type Water Testing Kit
EW-99560-14
In stock.
$144.00 USD/PACKAGE

Qty:

Guaranteed In-Stock Products Replacement total chlorine test kit for Oakton colorimeters 100 tests kit  (Representative photo only)

Replacement total chlorine test kit, for Oakton colorimeters, 100 tests/kit.

Brand Oakton,Product Type Water Testing Accessories
EW-35645-66
In stock.
$29.00 USD/EACH

Qty:

LaMotte 3658 SC Manganese Test Kit 50 Tests Kit (Representative photo only)

LaMotte 3658-SC Manganese Test Kit; 50 Tests/Kit

Range 0 to 0.5 ppm,Brand LaMotte,Product Type Water Testing Kit
EW-99565-15
Usually ships in 6 days.
$64.25 USD/EACH

Qty:

LaMotte Chlorine test kit Tests kit 100  (Representative photo only)

LaMotte Chlorine test kit (Tests/kit: 100)

Range Chlorine: 0 to 4.0 ppm,Brand LaMotte,Product Type Water Testing Kit
EW-99565-12
Usually ships in 4 days.
$21.00 USD/EACH

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LaMotte 1450 Turbidity Standard 1 NTU 60 mL (Representative photo only)

LaMotte 1450 Turbidity Standard, 1 NTU; 60 mL

Range 1 NTU,Brand LaMotte,Product Type Turbidity standard/kit
EW-05563-31
In stock.
$49.95 USD/EACH

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LaMotte 1451 Turbidity Standard 10 NTU 60 mL (Representative photo only)

LaMotte 1451 Turbidity Standard, 10 NTU; 60 mL

Range 10 NTU,Brand LaMotte,Product Type Turbidity standard/kit
EW-05563-33
In stock.
$49.95 USD/EACH

Qty:

Hach SpecCheck Standards DPD for Chlorine (Representative photo only)

Hach SpecCheck Standards, DPD for Chlorine

Range 0 to 2.0 mg/L,Brand HACH,Product Type Colorimetry
EW-99574-96
Available for order
or call 1-888-358-4705 to order
$180.00 USD/EACH

Qty:

Copper Reagent Powder Pillow Packs 10 mL 100 Tests (Representative photo only)
EW-99560-62
In stock.
$39.00 USD/PACKAGE

Qty:

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