Hanna Instruments HI-70023 Salinity Calibration Standard Sachets 5.00ppt, 25 x 20ml sachets
5.00ppt @ 25°C Salinity calibration standard sachets, 25 x 20mL
Care & Maintenance
It is recommended that you calibrate the electrode before using. For best results, calibrate frequently. Additionally, the instrument must be calibrated:
- When high accuracy is required
- At least once a month with regular use
To ensure accuracy with measurements:
- Use fresh calibration standards for each calibration
- Rinse the tester with purified water and dry off with a soft tissue before calibrating or taking measurements
- Calibrate monthly with regular use or more often with frequent use
- Inspect the tester to see if any foreign material is detected in the openings housing the electrodes
- A more thorough cleaning may be made using a non-abrasive detergent, and a soft material such as cardboard, to dislodge the material
- Rinse thoroughly with a stream of running tap water and jetting the stream through the opening. Shake excess water and rinse with purified water. Dry off and recalibrate the tester before using
- Store with the protective cap on
Check the instrument manual for guidance on how to enter calibration mode and use the calibration standards as instructed.
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.