Hach 21679-69 DEHA Reagent 1 Powder Pillows

Overview

Hach 21679-69 is a genuine Hach DEHA Reagent 1 Powder Pillow formulation, supplied in packs of 100, used for the determination of oxygen scavengers in boiler feedwater and process water systems by the iron reduction method. Formulated to support Hach Method 8140, the Hach 21679-69 reagent enables plant chemists and water treatment technicians to quantify diethylhydroxylamine (DEHA), carbohydrazide, hydroquinone, iso-ascorbic acid and methylethylketoxime concentrations, giving operators the analytical data needed to verify correct oxygen scavenger dosing in steam and boiler systems.

As the official authorized partner and exclusive regional representative for Hach, Seven Star LLC proudly supplies genuine Hach 21679-69 DEHA Reagent 1 Powder Pillows to industrial plants throughout Oman and the GCC. Every pack shipped from our Muscat-based facility is sourced directly through Hach’s authorized distribution channel, ensuring authentic reagent chemistry, correct shelf-life dating and full compatibility with existing Hach spectrophotometers and DR900-series colorimeters already deployed across regional power generation and process water laboratories.

Operating Principle

The Hach 21679-69 DEHA Reagent 1 initiates a colorimetric reaction based on the iron reduction method specified in Hach Method 8140. When added to a water sample containing residual oxygen scavenger compounds, the reagent reacts to produce a measurable color change whose intensity is directly proportional to the concentration of DEHA, carbohydrazide, hydroquinone, iso-ascorbic acid or methylethylketoxime present in the sample, allowing quantification across a working range of approximately 3–450 µg/L DEHA and up to 1000 µg/L for related compounds.

Because the reaction chemistry is standardized and repeatable, results obtained using DEHA Reagent 1 in conjunction with the companion DEHA Reagent 2 solution provide plant chemists with reliable, laboratory-grade quantification without requiring wet chemistry titration setups. This allows boiler water treatment programs to verify oxygen scavenger residuals are maintained within the target range needed to prevent dissolved oxygen corrosion in feedwater heaters, economizers and boiler tubes, protecting capital equipment from premature failure.

Engineering Design of the Hach 21679-69

The reagent is supplied as pre-measured powder pillows, each containing a single-dose quantity of the formulated iron reduction reagent chemistry sealed within a tear-open foil pouch. This single-use format eliminates the measurement error and contamination risk associated with bulk powder handling, ensuring consistent reagent dosing across every test performed by laboratory or field personnel using Hach Method 8140 procedures.

Each pack of 100 powder pillows provides sufficient reagent for 50 complete oxygen scavenger tests when paired with DEHA Reagent 2, supporting sustained testing programs across boiler water treatment monitoring schedules. The reagent is compatible with Hach DR-series spectrophotometers and portable colorimeters commonly deployed in power plant and process water laboratories, integrating directly into existing Hach-based water quality testing programs without requiring additional calibration equipment.

Key Features

The Hach 21679-69 DEHA Reagent 1 Powder Pillow delivers dependable performance around the following capabilities:

• Supports Hach Method 8140 for oxygen scavenger determination by the iron reduction colorimetric method.
• Quantifies DEHA, carbohydrazide, hydroquinone, iso-ascorbic acid and methylethylketoxime concentrations.
• Working range of approximately 3–450 µg/L DEHA supports precise boiler feedwater monitoring.
• Pre-measured single-dose powder pillow format eliminates dosing error and contamination risk.
• Pack of 100 pillows provides reagent for 50 complete tests when paired with DEHA Reagent 2.
• Compatible with Hach DR-series spectrophotometers and portable colorimeters for lab or field testing.
• Genuine Hach chemistry ensures repeatable, laboratory-grade analytical results across testing programs.
• Supports proactive boiler water treatment verification to prevent dissolved oxygen corrosion damage.

Industrial Applications

The Hach 21679-69 DEHA Reagent 1 is used extensively in power generation plant chemistry laboratories, industrial steam boiler operations, and process water treatment facilities where oxygen scavenger dosing must be verified to protect high-pressure boiler and feedwater systems from corrosion damage. In Oman’s power generation and desalination sector, as well as petrochemical steam systems across Muscat, Sohar and Salalah, plant chemists rely on DEHA Reagent 1 testing to confirm oxygen scavenger residuals remain within specification across daily and shift-based monitoring routines.

As the officially authorized partner for Hach in Oman and the GCC, Seven Star LLC distributes genuine 21679-69 reagent packs to power plant laboratories, water treatment operators and industrial testing contractors throughout the region, backed by regional warehouse stock and manufacturer-authenticated supply with confirmed shelf-life dating. Facilities across Sohar’s industrial port zone and Salalah’s free trade zone depend on Seven Star LLC for genuine Hach reagent chemistry with full batch traceability.

Technical Specifications

Call To Action

Seven Star LLC invites plant chemists and procurement teams across Oman and the GCC to submit a formal RFQ for the Hach 21679-69 DEHA Reagent 1 Powder Pillows. As the authorized partner for Hach in Oman and the GCC, we maintain regional warehouse stock for rapid dispatch, provide technical datasheets and method sheets on request, and offer direct access to our water analytics division for testing program support. Contact Seven Star LLC today to secure genuine Hach 21679-69 reagent with full manufacturer traceability and regional warranty backing.