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Hanna Instruments - HI93754C-25 COD High Range Reagent Vials, Dichromate Method (25 tests)

Hanna Instruments – HI93754C-25 COD High Range Reagent Vials, Dichromate Method (25 tests)

The HI93754C-25 COD Reagent Vials are high range dichromate reagents designed for the determination of Chemical Oxygen Demand (COD) from 0 to 15000 mg/L O₂ using a compatible benchtop photometer. These reagents provide 10 mg/L resolution with ± 150 mg/L ± 3% accuracy, making them suitable for heavily polluted samples. Each box contains 25 pre-dosed, ready-to-use green identification vials, clearly marked with lot number and expiration date for complete traceability. Manufactured in advanced facilities and supplied with a quality certificate, these reagents ensure reliable, efficient, and compliant COD testing.

  • High Range: 0–15000 mg/L O₂
  • 10 mg/L Resolution with ±150 mg/L ±3% Accuracy
  • Pre-Dosed Green Vials (25 per box)
  • Lot Number & Expiration Date for Full Traceability

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Description

The HI93754C-25 reagent kit is designed for high range COD analysis (0–15000 mg/L O₂) using a modification of the dichromate digestion method. During hot digestion, organic matter present in the sample is oxidized, converting hexavalent chromium to trivalent chromium. The reduced chromium is then determined colorimetrically using a compatible tabletop photometer. The intensity of the color produced is proportional to the COD concentration and is displayed directly in mg/L (ppm) O₂, making it ideal for wastewater, industrial effluent, and highly contaminated samples.

Each kit includes 25 pre-measured vials containing pre-dosed reagent, requiring only a small sample volume for testing. The green color-coded vials allow easy range identification, while the secure vial and cap design minimizes the risk of accidental leaks during digestion. Every box is labeled with a batch number and expiration date and supplied with a quality certificate to ensure full traceability and regulatory compliance. The pre-dosed format significantly reduces preparation time, eliminates manual reagent mixing, and improves laboratory safety and consistency.

Features

  • High Range COD Determination – 0 to 15000 mg/L O₂.
  • Dichromate Digestion Method – Oxidizes organic matter using hot digestion.
  • Resolution: 10 mg/L – Suitable for high concentration samples.
  • Accuracy: ±150 mg/L ±3% of Reading – Reliable analytical performance.
  • Pre-Dosed, Ready-to-Use Vials – Minimal sample volume required.
  • 25 Vials per Package – Convenient for routine testing.
  • Green Vial Identification – Easy visual recognition of high range.
  • Colorimetric Measurement – Reduced chromium measured using compatible photometer.
  • Hot Digestion Required – Ensures complete oxidation of organic compounds.
  • Leak-Resistant Vial & Cap Design – Improved safety during digestion process.
  • Lot Number & Expiration Date Marked – Ensures traceability.
  • Supplied with Quality Certificate – Manufactured in advanced facilities.
  • Reduced Preparation Time – No manual reagent mixing or glassware cleaning required.

Specifications

Method Parameter Range (as O2) Resolution Accuracy Reagent Code
EPA COD LR 0 to 150 mg/L 1 mg/L ±5 mg/L ±5% of reading HI93754A-25
COD MR 0 to 1500 mg/L 1 mg/L ±15 mg/L ±4% of reading HI93754B-25
Dichromate COD HR 0 to 15000 mg/L 10 mg/L ±150 mg/L ±3% of reading HI93754C-25
Mercury-free COD LR 0 to 150 mg/L 1 mg/L ±5 mg/L ±5% of reading HI93754D-25
COD MR 0 to 1500 mg/L 1 mg/L ±15 mg/L ±4% of reading HI93754E-25
ISO COD LR 0 to 150 mg/L 1 mg/L ±5 mg/L ±5% of reading HI93754F-25
COD MR 0 to 1500 mg/L 1 mg/L ±15 mg/L ±4% of reading HI93754G-25

Range 0 to 15000 mg/L O₂
Resolution 10 mg/L
Accuracy ±150 mg/L ±3% of reading
Vial Identification Color green
Package vials
Quantity 25
Method dichromate EPA

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