Hanna Instruments HI-97106-11 CAL Check™ standards for HI-97106 COD
CAL Check standards cuvette kit for the HI-97106 Chemical Oxygen Demand Portable photometer. Check your photometer is reading correctly with our quick and easy to use standards.
CAL Check™ standards for HI-97106 COD
Hanna equipment can be used in the laboratory or for on-site testing. Examples include: power plant operations, chemical manufacture, commercial laundries, pulp and paper mills, agriculture, environmental studies and general education, plus the water companies in the UK for wastewater and drinking water.
Chemical Oxygen Demand is a measurement of the 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.
The advantages of using this method includes certifiable results as well as high accuracy.
COD is used to measure 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 is measured on both influent and effluent water.
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.