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Chlorine DPD (Free & Total), DDPD (Free & Total) and DPD (Hypochlorite) Test Kits & Refills
Chlorine DPD (Free & Total), DDPD (Free & Total) and DPD (Hypochlorite) Test Kits & Refills
Chlorine DPD (Free & Total), DDPD (Free & Total) and DPD (Hypochlorite) Test Kits & Refills
Chemetrics

Chlorine DPD (Free & Total), DDPD (Free & Total) and DPD (Hypochlorite) Test Kits & Refills

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Chlorine DPD (Free & Total), DDPD (Free & Total) and DPD (Hypochlorite) Test Kits & Refills

Methods

Because of its strong oxidizing properties, chlorine is an excellent biocide used to treat potable waters, municipal wastes, and swimming pools. When used to treat potable water, chlorine helps alleviate the adverse effects of iron, manganese, ammonia, and sulfide. The Maximum Residual Disinfectant Level for chlorine is 4 mg/L in drinking water.

The DPD Method

References: USEPA Methods for Chemical Analysis of Water and Wastes, Method 330.5 (1983). APHA Standard Methods, 23rd ed., Method 4500-Cl G- 2000.
In the USEPA-accepted DPD methodology, free chlorine reacts with DPD to form a pink product. When ammonia or amines are present, some of the chlorine may exist as combined chlorine. Combined chlorine will not interfere with the free chlorine results, provided the readings are taken at one minute. To determine total chlorine (the sum of free and combined), use the A-2500 Activator Solution (potassium iodide) supplied in the kit. Results are expressed as ppm (mg/L) Cl2.The DPD method is also applicable to the direct determination of hypochlorite concentrations in various cleaning preparations and disinfectants prior to their dilution. DPD reacts with hypochlorite ions to form a pink color. Results are expressed as percent (%) NaOCl.

The DDPD™ Method

Reference: Developed by CHEMetrics, Inc.
The DDPD™ method is derived from the DPD method. Chlorine water test kits that employ this chemistry are well suited for use where biocides and chromate corrosion inhibitors are used simultaneously. DDPD reacts with free chlorine to form a purple product. When ammonia or amines are present in the sample, some of the chlorine may exist as combined chlorine. To determine total chlorine (the sum of free and combined), use the A-2500 Activator Solution (potassium iodide) that is supplied in the kit. Results are expressed as ppm (mg/L) Cl2.

Options

DDPD (Free & Total) 0-0.20 ppm

Part#: K-2511

Minimum Detection Limit: 0.04 ppm

Analysis Time: 1 minute

Kit Includes: Test Kit comes in a cardboard box and contains everything needed to perform 30 tests: Refill, Comparator, Activator Solution, 25 mL sample cup, instructions and MSDS.

Shelf-life: The comparator contained in this kit has a shelf-life of 12 months.

Applicable Refill Kit Part# R-2511, contains 30 self-filling ULR CHEMets® ampoules to refill kit K-2511 for the analysis of chlorine (free & total). R-2511 is compatible with C-2511 comparators.

DPD (Free & Total) 0-1 & 0-5 ppm

Part#: K-2504

Minimum Detection Limit: 0.05 ppm

Analysis Time: 1 minute

Kit Includes: Test Kit comes in a plastic case and contains everything needed to perform 30 tests: Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, and instructions.

Applicable Refill Kit Part# R-2500, contains 30 self-filling CHEMets® ampoules to refill kit K-2504 for the analysis of chlorine (free & total). R-2500 is compatible with C-2504 and C-2506 comparators.

DPD (Free & Total) 0-25 & 0-125 ppm

Part#: K-2504D

Minimum Detection Limit: 2.5 ppm

Analysis Time: 1 minute

Kit Includes: Test Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, 3.0 mL Syringe, and instructions.

Applicable Refill Kit Part# R-2504, contains 30 self-filling CHEMets® ampoules to refill kit K-2504D or K-2504A for the analysis of chlorine (free & total). R-2504 is compatible with C-2504D, C-2506D, C-2504A, and C-2506A comparators.

DPD (Free & Total) 0-50 & 0-250 ppm

Part#: K-2504A

Minimum Detection Limit: 5 ppm

Analysis Time: 1 minute

Kit Includes: Test Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, 3.0 mL Syringe, and instructions.

Applicable Refill Kit Part# R-2504, contains 30 self-filling CHEMets® ampoules to refill kit K-2504D or K-2504A for the analysis of chlorine (free & total). R-2504 is compatible with C-2504D, C-2506D, C-2504A, and C-2506A comparators.

DPD (Free & Total) 0-100 & 0-500 ppm

Part#: K-2504B

Minimum Detection Limit: 10 ppm

Analysis Time: 1 minute

Kit Includes: Test Kit comes in a plastic case contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, 200 uL MiniPet®1 and instructions.

1MiniPet is a registered trademark of Tricontinent Scientific, Inc.

Applicable Refill Kit Part# R-2509, contains 30 self-filling CHEMets® ampoules and pipette tips to refill kit K-2504B or K-2504C for the analysis of free and total chlorine. R-2509 is compatible with C-2504B, C-2506B, C-2504C, and C-2506C comparators.

DPD (Free & Total) 0-400 & 0-2000 ppm

Part#: K-2504C

Minimum Detection Limit: 40 ppm

Analysis Time: 1 minute

Kit Includes: Test Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Low and High Range Comparators, Activator Solution, 25 mL sample cup, 200 uL MiniPet®1 and instructions.

1MiniPet is a registered trademark of Tricontinent Scientific, Inc.

Applicable Refill Kit Part# R-2509, contains 30 self-filling CHEMets® ampoules and pipette tips to refill kit K-2504B or K-2504C for the analysis of free and total chlorine. R-2509 is compatible with C-2504B, C-2506B, C-2504C, and C-2506C comparators.

DPD (Hypochlorite) 0-1.55% NaOCl

Part#: K-5808

Minimum Detection Limit: 0.3%

Kit Includes: Test Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Comparator, 25 mL sample cup, Sample Prep Cup, 3.0 mL syringe, 200 uL MiniPet®,1and instructions.

1 MiniPet is a registered trademark of Tricontinent Scientific, Inc.

Applicable Refill Kit Part# R-5808,  contains 30 self-filling CHEMets® ampoules and pipette tips to refill kit K-5808 or K-5816 for the analysis of chlorine (hypochlorite). R-5808 is compatible with C-5808 and C-5816 comparators.

DPD (Hypochlorite) 0-12.5% NaOCl

Part#: K-5816

Minimum Detection Limit: 2.5%

Kit Includes: Test Kit comes in a plastic case and contains everything needed to perform 30 tests (except distilled water): Refill, Comparator, 25 mL sample cup, Sample Prep Cup, 3.0 mL syringe, 25 uL MiniPet®1 and instructions.

1 MiniPet is a registered trademark of Tricontinent Scientific, Inc.

Applicable Refill Kit Part# R-5808,  contains 30 self-filling CHEMets® ampoules and pipette tips to refill kit K-5808 or K-5816 for the analysis of chlorine (hypochlorite). R-5808 is compatible with C-5808 and C-5816 comparators.