Hanna Instruments HI-94754B-25 COD Medium Range Reagents, EPA approved Dichromate Method with Barcode
COD medium range EPA approved Dichromate Method. 25 tests with barcode.
The HI-94754B-25 is a box of 25 reagent vials for COD, medium range with barcode.
Adaptation of the EPA 410.4 approved method for the COD determination on surface water and wastewaters. Range: 0 to 1500mg/L .
Eight kits for all testing requirements
COD levels vary depending on the application and process measuring points. Hanna offers reagents to cover four separate ranges:
- Low range: 0 to 150 mg/L O2
- Medium range: 0 to 1500 mg/L O2
- High range: 0 to 15000 mg/L O2
- Ultra High range: 0 to 60000 mg/L O2
Pre-dosed vials
Each Hanna vial contains the exact amount of pre-dosed reagent needed for the analysis. The operator just needs to add a small quantity of the sample.
Safe reagents
Hanna COD reagents are safe for operators and the environment. Vials and caps have been designed to avoid accidental reagent spills. Due to the pre-dosed reagents, the amount of chemicals and handling time is minimised.
Quick and accurate measurements
With pre-dosed vials, test preparation time is dramatically reduced. There is no time-consuming reagent preparation procedure or glassware cleaning.
Compact packaging
Each set of COD Vials is stored in fully recyclable, sustainable, compact plastic packaging. The ergonomic box design reduces the volume of collateral waste and required storage space.
The procedure guide is printed on the inside of the box lid.
About Chemical Oxygen Demand (COD)
Chemical Oxygen Demand is a measure of biologically available and inert organic matter that is susceptible to oxidation by a strong oxidising agent.
The Hanna COD method is based on the well-established closed dichromate-reflux colorimetric method. The colorimetric measurement of COD is faster and easier to perform than the titrimetric analysis; additional regents are not required.
The sample is added to the reagent vial and digested under closed reflux conditions and allowed to cool before measurement is taken. Reference standards can be made using potassium hydrogen phthalate (KHP), 1mg of KHP is equal to 1.175 mg COD.
The advantage of using this method includes certifiable results as well as high accuracy.
About the application
COD is used as a measurement of pollutants. It is normally measured in both municipal and industrial wastewater treatment plants and gives an indication of the efficiency of the treatment process.
COD can be measured on both influent and effluent water. The efficiency of the treatment process is normally expressed as COD removal, measured as a percentage of the organic matter purified during the cycle.
COD also has applications in power plant operations, chemical manufacturing, commercial laundries, pulp and paper mills, agriculture and animal waste runoff, environmental studies and general education.
Hanna equipment can be used in the laboratory or for on-site testing. The measurement procedure has been designed for ease of use by personnel at any skill level.
Methods
Hanna’s COD reagents have been developed in accordance with Standard Methods 5220D, US EPA 410.4 and ISO 15705.
Why choose Hanna’s COD reagents
- All scales start from 0 ppm so with each kit, it is possible to cover even the low scale.
- All reagents include a certificate of analysis.
- High resistance to chlorides – up to 2000 ppm for low and medium range vials; up to 20000 ppm for high and Ultra high vials
Safety warnings
- Corrosive
- Serious Health Hazard
- Toxicity
- Hazardous to the Environment
Regulatory: This product contains an explosive precursor according to Regulation (EC) No 2019/1148, all customers must complete a declaration before delivery.
Specifications
| Range | 0 to 1500 mg/L (as O2) |
| Resolution | 1mg/L |
| Accuracy | ±15 mg/L or ±3% of reading at 25˚C, whichever is greater |
| Wavelength | 610nm |
| Tests | 25 (13mm Vial), with Barcode. |
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Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.