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ALDON Innovating Science Methylene Blue 1% Aqueous Solution, 1 fl oz (30mL) Dropper Bottle – Methyl Blue Microscope Stain – The Curated Chemical Collection

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Sodium Thiosulfate, Fine Crystals, 99.5% min., 500 Grams (1.1 lb.)

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Hach DPD Free Chlorine Reagent Powder Pillows, 10 mL, Pack of 100, Range from 0.02-2.00 mg/L Cl₂, USEPA Accepted Method 8021, Drinking Water and Wastewater Analysis, for Use with Colorimeter, 2105569

Original price was: $31.93.Current price is: $30.65.

The Hach DPD Free Chlorine Reagent Powder Pillows provide reliable chlorine analysis for both drinking water and wastewater applications. Covering a testing range of 0.02‑2.00 mg/L Cl₂, the pre‑measured 10 mL pillows are designed for use with Hach colorimeters following EPA Method 8021, ensuring consistent results in routine laboratory testing. Their convenient 100‑pack format supports frequent sampling while maintaining accuracy and compliance.

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SKU: CJ46TKB00N3Z Category:
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Description

Product Overview

The Hach DPD Free Chlorine Reagent Powder Pillows are engineered to deliver dependable chlorine measurements across a broad concentration spectrum of 0.02 to 2.00 mg/L Cl₂. Each pillow contains a precisely measured 10 mL dose of high‑purity reagent, eliminating the need for manual weighing or solution preparation. Packaged in a compact 4.65 × 4.65 × 0.79‑inch container, the 100‑pillows set occupies minimal laboratory space while providing a full year’s supply for routine monitoring programs. The reagent complies with the United States Environmental Protection Agency (USEPA) Method 8021, guaranteeing that results meet regulatory standards for both drinking water and wastewater analysis. Compatibility with Hach colorimeters and spectrophotometers ensures seamless integration into existing workflows, reducing instrument downtime and simplifying data acquisition.

Usage

These powder pillows are ideal for laboratories, municipal water treatment facilities, and field technicians who require quick, accurate chlorine testing. To use, simply add a single pillow to a 10 mL sample of water, stir gently, and insert the cuvette into a Hach colorimeter. The reagent reacts with free chlorine to produce a stable pink color that the instrument quantifies within seconds. The method is suitable for a variety of water sources, including groundwater, surface water, and finished drinking water, as well as effluent streams from wastewater treatment plants. Because the pillows are pre‑measured, they reduce user error and improve repeatability, making them perfect for high‑throughput monitoring programs, compliance audits, and research applications.

Why Choose Us

Choosing the Hach DPD Free Chlorine Reagent Powder Pillows means selecting a product backed by decades of analytical chemistry expertise. Hach’s reputation for quality is reinforced by rigorous internal testing and third‑party validation, ensuring each batch meets the stringent criteria of EPA Method 8021. The powder form offers superior stability compared to liquid reagents, extending shelf life and reducing waste. Additionally, the 100‑pillows pack provides cost‑effective pricing for laboratories that perform frequent analyses, while the compact packaging simplifies inventory management. Hach also offers responsive technical support, detailed method documentation, and training resources to help users achieve optimal performance.

Key Features

  • Pre‑measured 10 mL powder pillows eliminate weighing errors and save preparation time.
  • Wide testing range of 0.02‑2.00 mg/L Cl₂ supports diverse water quality monitoring needs.
  • Fully compliant with USEPA Method 8021 for both drinking water and wastewater analysis.
  • Designed for seamless use with Hach colorimeters, ensuring rapid and reliable results.
  • Dedicated customer support and comprehensive technical documentation for hassle‑free implementation.

FAQ

What is the shelf life of the powder pillows?

When stored in a cool, dry place away from direct sunlight, the pillows retain full potency for up to 24 months from the date of manufacture.

Can these pillows be used with non‑Hach instruments?

Yes, the reagent is compatible with any spectrophotometric system that follows EPA Method 8021, though calibration may be required for optimal accuracy.

How many tests can be performed with one pack?

Each pack contains 100 individual pillows, allowing for 100 separate chlorine measurements before a refill is needed.

Is there any special disposal procedure required?

Used pillows and residual solutions can be disposed of according to local hazardous waste regulations; they are not classified as hazardous when used as directed.

Do the pillows work for both free and total chlorine?

The formulation is optimized for free chlorine determination. For total chlorine analysis, a separate Hach reagent kit is recommended.

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