Description
With its distinctive design for measuring water quality, the HI88703 Precision Turbidity Benchtop Meter offers trustworthy and accurate readings, particularly in the low turbidity range.
The instrument’s optical system is state-of-the-art, ensuring accuracy, long-term stability, and reducing stray light and color interferences. Any changes in the tungsten lamp’s intensity are offset by routine calibration using the provided standards. The repeatability of turbidity measurements is ensured by the 25 mm round cuvettes made of superior optical glass.
Features at-a-glance:
Two Measurement Modes – The HI88703 features two options for turbidity measurement: ratio and non-ratio mode. Turbidity measurements can be made in the 0.00 to 4000 NTU (Nephelometric Turbidity Units) when using the ratio mode and in the 0.00 to 40.0 NTU range when non-ratio mode is used.
Multiple Turbidity Units of Measure – Turbidity can be read as Nephelometric Turbidity Units (NTU), European Brewing Convention units (EBC), or Nephelos units.
EPA Compliant – The HI88703 meets and exceeds the requirements of EPA and Standard Methods for turbidity measurements. When the meter is in EPA mode all turbidity readings are rounded accordingly to meet reporting requirements.
Calibration – The HI88703 has a powerful calibration function that compensates for lamp aging or changing. The calibration can be done using the supplied calibration solutions or user-prepared standards. A two, three, four, or five-point turbidity calibration can be performed by using the supplied (<0.10, 15.0, 100, 750, and 2000 NTU) standards. Calibration points can be modified if user-prepared standards are used.
AMCO AEPA-1 Primary Turbidity Standard – The AMCO AEPA-1 supplied standards are recognized as a primary standard by the USEPA. These non-toxic standards are made of styrene divinylbenzene polymer spheres that are uniform in size and density. The standards are reusable and stable with a long shelf life.
GLP Data – The HI88703 features complete GLP (Good Laboratory Practice) functions that allow traceability of the calibration conditions. Data includes calibration points, date, and time.
Data Logging – Up to 200 measurements can be stored in the internal memory and recalled at any time.
Data Transfer – For further storage or analysis options, logged data can be downloaded to a Windows compatible PC using the USB port and the HI92000 software.
Tutorial Mode – The unique tutorial mode provides additional information to help the user during measurements. When enabled, the instrument displays explanations and a confirmation button when a preparation or other operation has to be performed.
Contextual Help – Contextual help is always available through a dedicated HELP button. Clear tutorial messages and directions are available on-screen to quickly and easily guide users through setup and calibration. The help information displayed is relative to the setting/option being viewed.
Backlit Graphic LCD Display – A graphic LCD display provides an easy to understand, user-friendly interface. All messages are in plain text making them easy to read.
- The applicable range is 0-40 nephelometric turbidity units (NTU)
- Light source: Tungsten lamp operated at a color temperature between 2200-3000°K.
- Distance traversed by incident light and scattered light within the sample tube: Total not to exceed 10 cm.
- Detector: Centered at 90° to the incident light path and not to exceed ±30° from 90°. The detector, and filter system if used, shall have a spectral peak response between 400 nm and 600 nm
- The sensitivity of the instrument should permit detection of a turbidity difference of 0.02 NTU or less in waters having turbidities less than 1 unit.
- Report results as follows:
| NTU reading | Rounded to nearest |
| 0.0 – 1.0 | 0.05 |
| 1 – 10 | 0.1 |
| 10 – 40 | 1 |
| 40 – 100 | 5 |
| 100 – 400 | 10 |
| 400 – 1000 | 50 |
| >1000 | 100 |
The HI88703 meets and exceeds the meter criteria specied by the EPA Method 180.1 and Standard Methods for the Examination of Water and Wastewater 2130 B.
Principal of Operation
Supplied with Certificate of Analysis
- Lot number
- Expiration date
- Standard value @ 25 °C
- Reference meter NIST traceable
Provided storage containers
- Light tight
- Protects from accidental breakage
| SKU | HI88703-02 |
|---|---|
| Product Name | EPA Compliant Benchtop Turbidity Meter – HI88703 |
| Quote Required | Yes |
| Turbidity Range | Non-Ratio mode |
| Turbidity Resolution | Non-Ratio mode |
| Turbidity Accuracy | ±2% of reading plus 0.02 NTU (0.15 Nephelos; 0.01 EBC); ±5% of reading above 1000 NTU (6700 Nephelos; 245 EBC). |
| Turbidity Repeatability | ±1% of reading or 0.02 NTU (0.15 Nephelos; 0.01 EBC) whichever is greater |
| Turbidity Stray Light | < 0.02 NTU (0.15 Nephelos; 0.01 EBC) |
| Turbidity Calibration | two, three, four, or five-point calibration |
| Turbidity Measuring Method | nephelometric method (90°) or ratio nephelometric method (90° & 180°), adaptation of the USEPA Method 180.1 and Standard Method 2130 B |
| Turbidity Measuring Modes | normal, average, continuous |
| Turbidity Light Source | tungsten filament lamp |
| Turbidity Light Detector | silicon photocell |
| Logging Memory | 200 records |
| Connectivity | USB |
| Display | 40 x 70 mm graphic LCD (64 x 128 pixels) with backlight |
| Power Supply | 115/130 VAC; 50/60 Hz |
| Environment | 0 to 50°C (32 to 122°F), RH max 95% non-condensing |
| Dimensions | 230 x 200 x 145 mm (9.0 x 7.9 x 5.7”) |
| Weight | 2.5 kg (88 oz.) |
| Ordering Information | HI88703 is supplied with sample cuvettes (5) with caps, HI88703-11 calibration cuvettes for turbidity, silicone oil, cuvette wiping cloth, power cord, and instruction manual. |
