Hanna Instruments-701 Free Chlorine Handheld Colorimeter - Checker®HC
Ideal for swimming pools, spas and aquariums.
Chlorine is the most common water disinfectant and by monitoring chlorine regularly and accurately, serious health and safety risks can be avoided.
Can also be used to determine chlorine levels in fish tanks for optimum fish and plant health. Use alongside recommended dechlorinators.
Checker®HC is supplied with reagents for 6 tests. Use code Hanna Instruments-701-25 (25 tests) for future purchases.
Ideal for swimming pools, spas and aquariums
Chlorine is the most common water disinfectant and by monitoring chlorine regularly and accurately, serious health and safety risks can be avoided.
The contoured style of the Hanna Instruments-701 Free Chlorine Checker is designed to fit in the palm of your hand. The large LCD is easy to read and the auto shut-off feature ensures the battery life will not be drained if you forget to turn it off.
Can also be used to determine chlorine levels in fish tanks for optimum fish and plant health. Use alongside recommended dechlorinators.
Ideal for
- Swimming pools and spas
- Fruit, vegetable and salad washing
- Disinfection
- Aquaculture
Main Benefits
- Testing is quick and easy
- High precision results - more accurate than chemical test kits
- Auto shut-off feature means the Checker cannot be left on by mistake
- Fully portable, fitting easily into both palm and pocket
Supplied with
- 2 sample cuvettes
- Cuvette cap
- Starter pack of reagents (re-ordering information - Hanna Instruments-701-25
- 1 x 1.5 AAA battery
- Instructions
Four steps, one click instant readout
- Zero the Checker
- Add reagent
- Insert sample into Checker
- Press button for results
| Range | 0.00 to 2.50 ppm (mg/L) | |
| Resolution | 0.01 ppm (mg/L) | |
| Precision | 3% of reading ±0.03 ppm (mg/L) @ 25°C | |
| Light Source | LED @ 525 nm | |
| Light Detector | Silicon photocell | |
| Environment | 0 to 50°C (32 to 122°F); RH max 95% non-condensing | |
| Battery Type | (1) 1.5V AAA | |
| Auto-off | After 2 minutes of non-use and after read | |
| Dimensions | 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”) | |
| Weight | 64 g (2.25 oz.) | |
| Method | Adaptation of USEPA method 330.5. The reaction between free chlorine and the DPD reagent will cause a pint tint in the sample. |
| PLEASE NOTE: | In some cases, samples may contain other parameters which may interfere with results | |
| Interference may be caused by: | Bromine, Iodine, Ozone, Oxidized forms of Chromium and Manganese. In case of water with hardness greater than 500 mg/L CaCO3, shake the sample for approximately 2 minutes after adding the powder reagent.
|
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.