# Taylor R-0003 DPD Reagent #3

Taylor R-0003 is a specialized liquid reagent used in DPD chlorine testing to measure **combined chlorine (chloramines)** in pool and spa water. It is a required component in many Taylor drop-based test kits and is added after free chlorine testing to determine total chlorine levels. By comparing free chlorine to total chlorine, users can accurately calculate combined chlorine, which is responsible for strong chlorine odors, eye irritation, and reduced sanitizer effectiveness.

In professional water testing, R-0003 plays a critical role in diagnosing water quality issues that cannot be identified by free chlorine readings alone. Pools with acceptable free chlorine levels may still suffer from poor water quality if combined chlorine is elevated. This reagent allows service professionals and homeowners to detect that condition and take corrective action.

R-0003 is commonly used during routine testing, troubleshooting water problems, and verifying proper breakpoint chlorination.

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**Why the Reagent Matters**

Combined chlorine is one of the most common hidden water quality problems.

Why this matters:

-   Identifies chloramines that cause strong chlorine odor
    
-   Helps explain eye and skin irritation despite normal chlorine levels
    
-   Confirms whether shocking or breakpoint chlorination is needed
    
-   Ensures sanitizer is working effectively
    
-   Supports accurate, professional-grade water testing
    

Without R-0003, total chlorine cannot be measured accurately, making it impossible to determine combined chlorine levels.

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**Designed for Taylor DPD Chlorine Testing**

Taylor R-0003 is formulated specifically for use with Taylor DPD chlorine test methods. It is typically added after the initial DPD reagent that measures free chlorine. When R-0003 is added, any increase in color indicates the presence of combined chlorine.

Taylor reagents are known for consistency, accuracy, and reliability, which is why they are widely used by pool service professionals, health departments, and commercial facilities. Using genuine Taylor reagents ensures test results remain accurate and repeatable.

Always store reagents in a cool, dark location and replace them according to recommended shelf life for best accuracy.

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**Simple, Accurate Testing Process**

Using R-0003 is straightforward and integrates seamlessly into standard Taylor testing procedures. After measuring free chlorine, a few drops of R-0003 are added to the sample to determine total chlorine.

This reagent is ideal for:

-   Routine pool and spa water testing
    
-   Diagnosing persistent chlorine odor issues
    
-   Verifying shock effectiveness
    
-   Professional service and maintenance programs
    

Accurate testing allows for targeted chemical adjustments instead of guesswork.

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**Product Specifications**

Specification

Details

Product Type

Pool & spa test reagent

Brand

Taylor Technologies

Reagent Number

R-0003

Application

Combined & total chlorine testing

Test Method

DPD chlorine test

Use

Water chemistry analysis

Condition

New

UPC

840036000113

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**Buy with Confidence from Benchmark Pool Supply**

When you purchase Taylor R-0003 from Benchmark Pool Supply, you’re getting a genuine testing reagent trusted by pool professionals. We stock authentic Taylor products to help ensure accurate water testing and dependable results.

From routine maintenance to advanced water diagnostics, Benchmark Pool Supply is your trusted source for professional-grade pool testing supplies.

## Details

- **Price:** 5.95 USD
- **Vendor:** Taylor Water Technologies
- **Tags:** Ready for Links, SEO Added

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 5.95 USD | In stock |

## Images

- Taylor R-0003 DPD Reagent #3 pool chemical bottle for genuine OEM pool equipment parts

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> Source: [Benchmark Pool Supply](https://benchmarkpoolsupply.com/products/r-0003-taylor)
> Updated: 2026-06-18