Free Chlorine Checker 0.00 to 2.50 ppm

Excl. VAT:	£75.10
Incl. VAT:	£90.12
Brand:	Hanna Instruments
Product Code:	HANNA-701
Quantity:

Hanna Instruments HI-701 Free Chlorine Checker®HC Handheld Colorimeter (0.00 to 2.50 ppm)

The Hanna Instruments HI-701 Free Chlorine Checker®HC is a compact, palm-sized handheld colorimeter for quick and accurate measurement of free chlorine across a range of 0.00 to 2.50 ppm. Chlorine is the most commonly used water disinfectant and regular, accurate monitoring is essential to avoid serious health and safety risks. The HI-701 delivers high precision results in a simple, portable format that is more accurate than chemical test kits, with no colour-matching guesswork required.

The HI-701 uses an adaptation of USEPA method 330.5 — the reaction between free chlorine and the DPD reagent produces a pink tint in the sample which the Checker®HC measures and displays as a digital ppm value. The contoured casing is designed to fit comfortably in the palm of the hand, the large LCD is easy to read, and the auto shut-off feature ensures the battery cannot be drained if the unit is left on. The HI-701 is supplied with two sample cuvettes, a cuvette cap, a starter pack of reagents (6 tests), a battery and instructions. Replacement reagents are available as HI-701-25 (25 tests).

Key Features

Free chlorine measurement range 0.00 to 2.50 ppm (mg/L)
Precision ±3% of reading ±0.03 ppm @ 25°C
More accurate than chemical test kits — clear digital readout
LED light source @ 525 nm with silicon photocell detector
Contoured palm-sized design with large, easy to read LCD
Auto shut-off after 2 minutes of non-use and after read
Fully portable — fits easily in palm and pocket
Single AAA battery powered
Supplied with starter pack of 6 reagent tests

Typical Applications

Swimming pools and spas
Fruit, vegetable and salad washing
Disinfection monitoring
Aquaculture
Fish tanks — use alongside recommended dechlorinators

Please note: Interference may be caused by bromine, iodine, ozone and oxidised forms of chromium and manganese. For water with hardness greater than 500 mg/L CaCO₃, shake the sample for approximately 2 minutes after adding the powder reagent. If alkalinity exceeds 250 mg/L CaCO₃ or acidity exceeds

Product Specifications

Model	HI-701 Checker®HC
Parameter	Free Chlorine
Range	0.00 to 2.50 ppm (mg/L)
Resolution	0.01 ppm (mg/L)
Precision	±3% of reading ±0.03 ppm @ 25°C
Method	Adaptation of USEPA method 330.5, DPD Colorimetric Method
Light Source	LED @ 525 nm
Light Detector	Silicon photocell
Battery Type	1 x 1.5V AAA
Auto-off	After 2 minutes of non-use and after read
Operating Environment	0 to 50°C (32 to 122°F); RH max 95% non-condensing
Dimensions	81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5")
Weight	64g (2.25 oz.)
Reagents	HI-701-25 (x25 tests, sold separately — starter pack of 6 tests included)
Supplied With	Sample cuvettes (x2), cuvette cap, reagent starter pack (x6 tests), 1.5V AAA battery, instructions