
Hanna Instruments-3831T Chlorine (Total) test kit
Total Chlorine test kit
The Hanna Instruments-3831T total chlorine test kit is equipped with all you need to determine total chlorine levels in water.
The chlorination of water supplies and polluted waters is used mainly to destroy or deactivate disease-producing micro-organisms. It also serves to improve the quality of drinking waters, as chlorine reacts with ammonia, iron, manganese, sulphide and some organic substances.
Nevertheless, high amounts of chlorine will produce adverse effects, like formation of compounds which are potentially carcinogenic (e.g. chloroform) or harmful to aquatic life (e.g. chloramines). Thus it is essential to control that the proper amount of chlorine has been added in order to fulfil the primary purpose of disinfecting and to minimise any adverse effects.
Order information
The Hanna Instruments-3831T total chlorine test kit comes supplied with; colour comparison cube, 20mL chlorine reagent 1, 15mL chlorine reagent 2 and 15mL chlorine reagent 3.
Check out our Checker® HC Handheld Colorimeters – a highly-accurate and affordable way to test for chemicals using a gadget that sits perfectly in the palm of your hand and also fits nicely into your pocket.

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.
