Taylor FAS-DPD Chlorine Titration Reagent 16 oz Liquid – R-0871-E for Free & Total Chlorine Testing

Taylor R-0871-E FAS-DPD is a 16-ounce liquid titrating reagent formulated for FAS-DPD chlorine titration, used to determine free and total chlorine levels in water testing.

This ready-to-use liquid reagent from Taylor Technologies is designed for laboratories, field technicians, and pool/spa professionals who use the FAS-DPD titration method to quantify chlorine. Packaged in a 16 oz bottle and made in the United States, the R-0871-E provides the active chemistry needed to produce a clear titration endpoint when used with the appropriate DPD indicator and titration technique. It is compatible with standard titration kits and procedures that specify FAS-DPD reagents.

How does the R-0871-E reagent function in a chlorination test?

The R-0871-E serves as the titrant in the FAS-DPD method: it reacts with the DPD-stained sample to reduce chlorine until the DPD color disappears, indicating the endpoint. The volume of titrant used corresponds to chlorine concentration and is converted to mg/L or ppm using the test kit's calculation or graduations.

• Formulated for use as the ferrous ammonium sulfate (FAS) titrant in DPD titrations.
• Used with DPD indicator tablets or solutions that create a pink to purple color proportional to chlorine.
• Measures free and total chlorine depending on sample preparation and DPD use.
• Compatible with manual titration kits and glassware commonly used in pool, spa, and water testing.

What are the storage and handling considerations for this 16 oz liquid reagent?

Store the R-0871-E in a cool, dry place away from direct sunlight and heat sources, tightly capped to maintain reagent stability. Follow safety data sheet directions for handling, wear appropriate protective gear, and keep out of reach of children; do not mix with incompatible chemicals.

• Keep bottle sealed when not in use to prevent contamination and evaporation.
• Store at recommended temperatures shown on packaging or SDS.
• Use corrosion-resistant measuring tools and rinse them after use.
• Dispose of any unused reagent per local hazardous-waste regulations.

How do I use the Taylor R-0871-E with a standard FAS-DPD titration kit?

Perform the standard DPD procedure: add DPD indicator to the water sample to produce the characteristic pink color, then add R-0871-E titrant dropwise until the color fully clears. Count drops or measure volume to calculate chlorine concentration according to your kit’s calibration.

• Prepare sample in a clean titration cell or beaker following kit instructions.
• Add prescribed amount of DPD indicator and mix gently to develop color.
• Add R-0871-E slowly until the color change indicates the titration endpoint.
• Convert titrant volume to chlorine concentration using kit-specific factors.

What compatibility and quality details should I know before buying?

The R-0871-E is produced by Taylor Technologies in the United States and intended for use with FAS-DPD methods specified by many test-kit manufacturers. It is labeled with Taylor's model number (R-0871-E) to ensure you receive the correct titrant for FAS-DPD procedures.

• Brand: Taylor Technologies, model R-0871-E, 16 oz liquid titrant.
• Manufactured in the United States for consistency and quality control.
• Intended for laboratory and field titration applications using the DPD method.
• Confirm compatibility with your existing kit or instrumentation prior to purchase.

Who is this for: Professionals and technicians who perform routine chlorine analysis—such as pool and spa service providers, municipal or industrial water testers, and lab personnel—will benefit from Taylor’s R-0871-E. It is best suited for users who follow established FAS-DPD titration protocols and need a dependable, commercial-grade titrant in a convenient 16 oz bottle. If you require single-use strips or alternate colorimetric methods, consider those options; this product is focused on titration-based chlorine measurement.