HI97710 is an advanced portable photometer for the measurement of pH, free chlorine, and total chlorine in water. This meter offers a superior optical system that utilizes a reference detector and narrow band interference filters for extremely fast and repeatable measurements.
Chlorine is a common chemical used by many due to is disinfection properties. Free chlorine can exist in two forms and which form is present is based on the pH. At pH less than 7.6 the predominate form is hypochlorous acid (HOCl) while at pH greater than 7.6 the hypochlorite (OCl-) form becomes predominate. This is very important when it comes to preventing biological growth in water or keeping a swimming pool safe since hypochlorous acid is 100 times more effective as a sanitizer. Total chlorine represents both the free chlorine and combined chlorine present. Combined chlorine is the chlorine bound to nitrogen substances such as ammonia. In swimming pools combined chlorine that we can smell and is irritating to the eyes. The free chlorine measurement is subtracted from the total chlorine measurement in order to know how much combined chlorine is present. HI97710 is designed to measure pH and low levels of free and total chlorine in water up to 5.00 mg/L (ppm).
The HI97710 has an innovative optical system that offers superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement. This compact, waterproof meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement. The use of a backlit dot matrix LED allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different methods, reviewing GLP data, recalling the last 50 measurements, and customizing the meter to user preferences
HI97710 is completely waterproof including the cuvette holder that is designed with ridges to protect the optical path from getting scratched by the cuvette and a gasketed battery compartment that holds three common AA batteries. The compact design fits comfortable in the hand for use in the field or on a table for benchtop use. The LCD is 71 mm (2.75'') by 37 mm (1.6'') and is backlit for easy viewing under all conditions.
CAL Check
Advanced features including CAL-Check to verify performance, GLP for last calibration date, setup options and the ability to see all accessories used with the meter.
Tutorial Mode
When enabled, the tutorial mode will guide the user step by step through the measurement process .
Method Options
Choice of powder or economical liquid reagents for chlorin measurments.
Stable Light Source:
High Efficiency Light Source:
High Quality Filters:
Greater Light Yield:
A focusing lens collects all of the light that exits the cuvette, eliminating errors from imperfections and scratches that may be present in the glass. The use of the convex lens reduces the need for indexing cuvettes.
CAL Check Functionality:
Mulitple Measurement Methods:
Built-in Reaction Timer:
Waiting the proper reaction time is of key importance when performing colorimetric measurements. The countdown timer displays the time remaining until a measurement will be taken, ensuring consistent results between sample measurements and users.
Large Cuvette Size:
Intuitive Dot Matrix Display:
Auto-off Protection:
The meter uses three common AA batteries that allow for about 800 measurements to be taken. The auto-off feature automatically shuts off the meter after 15 minutes of inactivity in order conserve battery life.
| SKU | HI97710-web |
|---|---|
| Product Name | pH, Free and Total Chlorine Portable Photometer with CAL Check - HI97710 |
| Quote Required | Yes |
| pH Range | 6.5 to 8.5 pH |
| pH Resolution | 0.1 pH |
| pH Accuracy | ±0.1 pH @ 25 oC |
| pH Method | adaptation of Phenol Red method |
| Free Chlorine Range | 0.00 to 5.00 mg/L (as Cl2) |
| Free Chlorine Resolution | 0.01 mg/L |
| Free Chlorine Accuracy | ±0.03 mg/L ±3% of reading |
| Total Chlorine Range | 0.00 to 5.00 mg/L (as Cl2) |
| Total Chlorine Resolution | 0.01 mg/L |
| Total Chlorine Accuracy | ±0.03 mg/L ±3% of reading |
| Chlorine Method | adaptation of the EPA 330.5 DPD method |
| Photometer/Colorimeter Light Source | Light emitting diode |
| Photometer/Colorimeter Light Detector | silicon photocell with narrow band interference filter @ 525 nm |
| Bandpass Filter Bandwidth | 8 nm |
| Bandpass Filter Wavelength Accuracy | ±1.0 nm |
| Cuvette Type | round, 24.6 mm diameter (22 mm inside) |
| GLP | date, time of last calibration |
| Display | 128 x 64 pixel B/W LCD with backlight |
| Logging Type | automatic logging |
| Logging Memory | 50 measurement |
| Battery Type/Life | 1.5V AA battery (3 pcs.) / > 800 measurements (without backlight) |
| Automatic Shut-Off | After 15 minutes of inactivity (30 minutes before a READ measurement) |
| Environment | 0 to 50°C (32 to 122°F); relative humidity |
| Weight | 380 g (13.4 oz.) with batteries |
| Dimensions | 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0'') |
| Ordering Information | HI97710 is supplied with cuvettes (2), caps (2), plastic inserts for cuvettes (2), 1.5V AA batteries (3), instruction manual, and instrument quality certificate. |
| Kit | HI97710C is supplied with CAL-Check standards, cuvettes (2), caps, (2), plastic inserts for cuvettes (2), scissors, cuvette cleaning cloth, 1.5V AA batteries (3), instruction manual, and instrument quality certificate. |
