Hanna Instruments HI-781-11 Marine Nitrate Low Range certified standards
Hanna's Checker HC Calibration Sets provide a simple solution to validating your Checker HC.
Each high quality set of standards is manufactured in our state-of-the-art facility and comes supplied with a Certificate of Analysis. The certificate of Analysis provides the lot number, reference values and expiry date to provide traceability when certifying the Checker HC.
Hanna Instruments certifies these standards meet the states tolerance limited indicated.
2.49 ± 0.25 @ 25˚C
These should be used for quality control to validate instrument function on the specified Hanna Instrument only.
Instructions for use:
1 Thoroughly wipe standard cuvette with HI-731318 lint free cloth and only touch the top of the cuvette thereafter. The cuvette wall must be dry and free of smudges.
2 At the c1 prompt place HI-781-11 A standard cuvette into the holder of the checker and press operations button.
3 At the c2 prompt place HI-781-11B standard cuvette into the holder and then press the operations button.
Acceptable results must be between 2.25 and 2.75 ppm @ 25˚C.
Specifications
| Package | Cuvette |
| Quantity | 1 set |
| Certificate of Analysis | 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.