

HACH COD cuvette test 1,000-10,000 mg/L O₂, 25 tests
LCK cuvette tests: Minimum amounts of reagents, maximum safety.
Pre-dosed reagents for maximum safety. Easy to use and photometric evaluation, packaged in a fully equipped box. Officially approved for consent limits. Environmentally friendly due to less chemicals.
Benefits
Safe and easy handling
LCK cuvette tests provide maximum safety for users, thanks to the closed cuvette system and low amounts of reagents. The glassware used assures the best precision and the cuvettes have a flat bottom so they can stand on their own.
Packages of LCK cuvette tests are colour-coded for fast and easy parameter and range recognition for the exact test you need. Step-by-step illustrated test methods are printed on the box for quick reference.
Batch after Batch - Be Right
Truecal with each cuvette includes the calibration data for each individual batch, reducing variation in results. This allows you to meet reporting standards and to perform proficiency testing with higher confidence.
No Reagent Blank Necessary
The high quality of LCK cuvettes, tight reagent production controls, instrument calibration verification, and high instrument stability all combine to eliminate the need to run reagent blanks - saving you time and money!
Reduce errors
A unique barcode label on each Hach LCK cuvette test is automatically read by the spectrophotometer when used with Hach’s DR6000 UV-VIS spectrophotometer or DR3900 benchtop spectrophotometer to identify the appropriate method and take the measurement. This significantly reduces errors as well as scratched, flawed or dirty glassware becomes non-issue as the instrument averages 10 readings and rejects outliers.
Documented Shelf Life and COA
The barcode details batch number and expiry date of reagents, which are documented along with the measurement result. An automatic warning is issued if expiry date has passed. Batch specific information (COA) is available on RFID tag on the box, which can be read out with the DR6000 or DR3900 spectrophotometer.
Specifications
Technical Attributes
| According to standard | ISO 6060-1989, DIN 38409-H41-H44 |
| Description | Chemical Oxygen Demand |
| Digestion required | Yes |
| Instrument | DR3900, DR6000, DR1900 |
| Measuring range | 1000 - 10000 mg/L O₂ |
| Method | Dichromate |
| Number of tests | 25 |
| Parameter | COD |
| Platform | LCK |
| Storage conditions | 15 - 25 °C (protect from light) |
| Truecal | Yes |

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.
