- Easier to use and more accurate than chemical test kits
    Amino acid method
    ±1.0 ppm ±5% of reading accuracy
    Large, easy to read digits
    Auto shut off
- Dedicated to a single parameter
    Designed to work with HANNA’s reagents
    Uses 10 mL glass cuvettes
- Small size, big convenience
    Weighing a mere 64 g (2.25 oz.), the Checker®HC easily 
    fits into the palm of your hand or pocket
    Use for quick and accurate on the spot analysis
    Single button operation: zero and measure
    Operated by a single AAA battery
- Ideal for:
Aquaculture, natural, waste, drinking waters and agriculture
Orthophosphates are found in natural and wastewaters. They are commonly added to drinking water as a corrosion inhibitor. The instantaneous analysis of orthophosphate by colorimetric determination provides rapid results using a standard analysis technique.
The HANNA HI 717 Checker®HC bridges the gap between simple chemical test kits and professional instrumentation. Chemical test kits are not very accurate and only give only a few resolution points, while professional instrumentation can cost hundreds of dollars and can be time consuming to calibrate and maintain. The HANNA HI 717 Checker®HC is accurate and affordable.
The HI 717 Checker®HC is extremely simple to use. First, zero the instrument with your water sample. Next, add the reagents. Last, place the vial into the Checker®HC, press the button and read the results. It’s that easy.
Spesification :
 
| Range | 0.0 to 30.0 ppm (mg/L) | |
| Resolution | 0.1 ppm (mg/L) | |
| Accuracy @ 25°C | ±1.0 ppm (mg/L) ±5% of reading | |
| 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 two minutes of non-use and ten seconds 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 | adaptation of the Standard Methods for the Examination of Water and Wastewater, 18th edition, Amino Acid method | 
 
