HANNA Total Chlorine Handheld Colorimeter Checker (HI-711)

Key features

• Fully portable, fitting easily into both palm and pocket
• 0.00 to 3.50 ppm
• Checker®HC is supplied with reagents for 6 tests. Use code HI-711-25 (25 tests) for future purchases.
• High precision results - more accurate than chemical test kits
• Auto shut-off feature means the Checker cannot be left on by mistake

Supplied with

• 2 sample cuvettes
• Cuvette cap
• Starter pack of reagents x 6 (re-ordering information: HI-711-25 x 25 tests)
• 1 x 1.5 AAA battery
• Instructions

Specifications

Range		0.00 to 3.50 ppm
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 reading
Dimensions		81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)
Weight		64 g (2.25 oz.)
Method		EPA approved DPD method Standard Method 4500-Cl G.

PLEASE NOTE:		In some cases, samples may contain other parameters which may interfere with results
Interference may be caused by:		Bromine, Iodine, Ozone, Oxidised 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. If the water used for this procedure has an alkalinity value greater than 250 mg/L CaCO3 or acidity value greater than 150 mg/L CaCO3, the colour of the sample may develop only partially, or may rapidly fade. To resolve this, neutralise the sample with diluted HCl or NaOH.