Checker photometer for free chlorine LR, 0.00 to 2.50 mg/l

HI701 Details: Ideal for swimming pools, spas and aquariums. Chlorine is the most commonly used water disinfectant and by monitoring chlorine regularly and accurately, serious health and safety risks can be avoided. The contoured style of the HI-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. Checker®HC is supplied with reagents for 6 tests. Use code HI-701-25 (25 tests) for future purchases. 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 – HI-701-25 1 x 1.5 AAA battery Instructions Four steps, one click instant readout img src=https://hannainstruments.co.uk/img/cms/CheckerReagent_1.jpg"Step 1width=200height=200  1. Zero the Checker img src=https://hannainstruments.co.uk/img/cms/CheckerReagent_2.jpg"Step 2width=200height=200  2. Add reagent img src=https://hannainstruments.co.uk/img/cms/CheckerReagent_3.jpg"Step 3width=200height=200  3. Insert sample into Checker img src=https://hannainstruments.co.uk/img/cms/CheckerReagent_4.jpg"Step 4width=200height=200  4. Press button for results   Also available: Calibration set HI-701-11. 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. style=width: 100%; height: 191.562px; style=height: 21px; style=width: 15.5606%;PLEASE NOTE: style=width: 0%;  style=width: 83.2273%;In some cases, samples may contain other parameters which may interfere with results style=height: 170.562px; style=width: 15.5606%;Interference may be caused by: style=width: 0%;  style=width: 83.2273%;Bromine, Iodine, Ozone, Oxidized forms of Chromium and Manganese. In case of water with hardness greater than 500 mg/L CaCOsub3/sub, shake the sample for approximately 2 minutes after adding the powder reagent. If the water used for this procedure has an alkalinity value greater than 250 mg/L CaCOsub3/sub or acidity value greater than 150 mg/L CaCOsub3/sub, the colour of the sample may develop only partially, or may rapidly fade. To resolve this, neutralise the sample with diluted HCl or NaOH.