HI97721 is an advanced portable photometer for the measurement of iron in water up to 5.00 mg/L. This meter has a superior optical system that utilizes a reference detector and narrow band interference filters for extremely fast and repeatable measurements.
In domestic water, the EPA sets secondary non-mandatory levels for iron at 0.3 mg/L because high levels of iron do not pose a risk to human health. However, levels higher than this cause water to have a rusty color, sediment, metallic taste, and can cause reddish or orange staining to laundry, appliances, and porcelain. Iron is also an indicator of corrosion in industrial settings, irrigation systems, and boilers and cooling towers. The HI97721 uses an adaptation of method 3500-Fe B, the phenanthroline method, from Standard Methods for the Examination of Water and Wastewater, 23rd Edition. In the phenanthroline method, iron is brought into solution and reduced to its ferrous state (Fe2+). The solution is then treated with 1,10-phenanthroline at a pH of 3.2 to 3.3. Three molecules of phenanthroline then react with one ferrous iron atom to form a complex with an orange color. The intensity of the color is directly proportional to the amount of ferrous iron in the sample. The phenanthroline method is ideal for measuring samples with a high concentration of iron. The HI97721 Iron Photometer can measure iron in water from 0.00 to 5.00 mg/L (ppm).
The HI97721 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 units of measure, reviewing GLP data, recalling the last 50 measurements, and customizing the meter to user preferences.
HI97721 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.
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:
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 | HI97721-web |
|---|---|
| Product Name | Iron High Range Portable Photometer with CAL Check - HI97721 |
| Quote Required | Yes |
| Iron Range | 0.00 to 5.00 mg/L (as Fe) |
| Iron Resolution | 0.01 mg/L |
| Iron Accuracy | ±0.04 mg/L ±2% of reading at 25 °C |
| Iron Method | Adaptation of Standard Methods for the Examination of Water and Wastewater, 23rd Edition, 3500-Fe B, Phenanthroline Method |
| Photometer/Colorimeter Light Source | LED with 525 nm bandpass filter |
| Photometer/Colorimeter Light Detector | silicon photocell |
| Bandpass Filter Bandwidth | 8 nm |
| Bandpass Filter Wavelength Accuracy | ±1.0 nm |
| Cuvette Type | round 24.6 mm diameter (22 mm inside) |
| GLP | yes |
| Display | 128 x 64 pixel B/W LCD with backlight |
| Logging Memory | 50 readings |
| Battery Type/Life | 1.5 V AA Alkaline (3 pcs.) / > 800 measurements (without backlight) |
| Environment | 0 to 50 °C (32 to 122 °F); 0 to 100% RH |
| Weight | 380 g (13.4 oz.) |
| Dimensions | 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0'') |
| Ordering Information | HI97721C is supplied with CAL Check standards, cuvettes (2), caps (2), plastic inserts for cuvette, (2), scissors, cuvette cleaning cloth, 1.5V AA batteries (3), instruction manual, and instrument quality certificate packaged in a rugged, thermoformed carrying case. |
