Free Chlorine Ultra Low Range Checker HC

Code: HI-762

Variation ID		Product Code	Pack Size	List Price	Qty
29185	photo_camera	HI-762	1 Pack HI-762	£90.20

Pack: 1 Pack

£90.20

General
Specification

Chlorine is the most common water disinfectant and by monitoring chlorine regularly and accurately, serious health and safety risks can be avoided.

The Hanna Free Chlorine Ultra Low Range Checker bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits have limited accuracy and resolution since they rely upon the human eye to discern differences in colour. Professional instrumentation incorporates a light source such as an LED or tungsten lamp with a filter and a light sensing detector to precisely determine ion concentration. Professional instrumentation offers greater resolution and accuracy but can cost hundreds of dollars. The Hanna Free Chlorine Ultra Low Range Checker uses a fixed wavelength LED and silicon photo detector to provide the accuracy of professional instrumentation at the affordable price of a chemical test kit.

The contoured style of the HI-762 ultra-low range 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.

Ideal for

Swimming pools and spas
Fruit, vegetable and salad washing
Disinfection

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-762-25 x 25 tests)
1 x 1.5 AAA battery
Instructions

Range	0 to 500 ppb
Resolution	1 ppb
Accuracy @ 25°C	±4% of reading ±20ppb
Light Source	LED @ 525 nm
Light Detector	Silicon photocell
Environment	0 to 50°C; RH max 95% non-condensing
Battery Type	(1) 1.5V AAA
Auto-off	After 10 minutes of non-use
Dimensions	81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5")
Weight	64 g
Method	adaptation of USEPA method 330.5, DPD method

Ordering information: supplied with sample cuvettes with caps (2), free chlorine reagent starter kit (reagents for six tests), battery, instructions and quick start guide.

PLEASE NOTE:

In some cases, samples may contain other parameters which may interfere with results

Interferences may be caused by:

Alkalinity: above 1,000 mg/L CaCO3 if present as bicarbonate (HCO3 sample pH < 8.3); above 25 mg/L CaCO3 if present as carbonate (CO32-, sample pH > 9.0). In both cases, it will not reliably develop the full amount of colour, or it may rapidly fade (negative 15 error). To resolve this, neutralise the sample with diluted HCl.

Acidity: above 150 mg/L CaCO3. May not be reliably develop the full amount of colour, or it may rapidly fade (negative error). To resolve this, neutralise the sample with diluted NaOH.

Hardness: in case of water with hardness greater than 500mg/L CaCO3, shake the sample for approximately 2 minutes after adding the powder reagent.

Bromine (Br2): positive error
Chloride dioxide (ClO2): positive error
Iodine (I2): positive error
Oxidized Manganese and Chromium: positive error
Ozone (O3): positive error