Hanna Instruments HI-94754A-25 COD low range EPA approved Dichromate Method with Barcode
The HI-94754A-25 are barcode reagent vials that follow the EPA approved method for the low range determination of chemical oxygen demand (COD) using a compatible benchtop photometer.
For professional use only. Please contact our sales representatives to place an order. See warnings listed under the full description below.
These high quality reagents are clearly marked with the lot number and expiry date on each box for traceability.
- Pre-dosed reagents for ease of use
- Prepared with high purity chemicals
- Marked with expiry date and lot number for traceability
The HI-94754A-25 COD kit contains 25 ready-to-use, barcoded vials containing pre-measured reagents. These high quality reagents follow the EPA approved method 410.4. In this method, a heated digestion under acidic conditions is required to allow the oxidisable organic compounds present in the sample to reduce hexavalent chromium to trivalent chromium, causing an orange tint in the sample. The intensity of colour is determined by a compatible photometer and the COD concentration is displayed in mg/L (ppm) O2. These reagents are designed to be used with samples that have an expected range of 0 to 150 mg/L (ppm) O2.
| Dichromate EPA Method | ||
| COD - LR | ||
| Range (as O2) | 0 to 150 mg/L | |
| Resolution | 1mg/L | |
| Accuracy | ±5 mg/L ±5% of reading | |
| Pack of 25 vials | HI-93754A-25 | |
| Replacement reagents | HI-94754A-25 | |
| COD - MR | ||
| Range (as O2) | 0 to 1500 mg/L | |
| Resolution | 1mg/L | |
| Accuracy | ±15 mg/L ±4% of reading | |
| Pack of 25 vials | HI-93754B-25 | |
| Replacement reagents | HI-94754B-25 | |
| Dichromate Method | ||
| COD - HR | ||
| Range (as O2) | 0 to 15000 mg/L | |
| Resolution | 10mg/L | |
| Accuracy | ±150 mg/L ±3% of reading | |
| Pack of 25 vials | HI-93754C-25 | |
| Replacement reagents | HI-94754C-25 | |
| Dichromate Mercury-Free Method | ||
| COD - LR | ||
| Range (as O2) | 0 to 150 mg/L | |
| Resolution | 1mg/L | |
| Accuracy | ±5 mg/L ±5% of reading | |
| Pack of 25 vials | HI-93754D-25 | |
| Replacement reagents | HI-94754D-25 | |
| COD - MR | ||
| Range (as O2) | 0 to 1500 mg/L | |
| Resolution | 1mg/L | |
| Accuracy | ±15 mg/L ±4% of reading | |
| Pack of 25 vials | HI-93754E-25 | |
| Replacement reagents | HI-94754E-25 | |
| Dichromate ISO Method | ||
| COD - LR | ||
| Range (as O2) | 0 to 150 mg/L | |
| Resolution | 1mg/L | |
| Accuracy | ±5 mg/L ±5% of reading | |
| Pack of 25 vials | HI-93754F-25 | |
| Replacement reagents | HI-94754F-25 | |
| COD - MR | ||
| Range (as O2) | 0 to 1500 mg/L | |
| Resolution | 1mg/L | |
| Accuracy | ±15 mg/L ±4% of reading | |
| Pack of 25 vials | HI-93754G-25 | |
| Replacement reagents | HI-94754G-25 |
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.