Hanna Instruments HI98703-02 Turbidity (EPA) Portable Meter

With its distinctive design for measuring water quality, the HI98703 Precision Turbidity Portable 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

Multiple reading modes – Normal measurement, continuous measurement, or signal averaging measurement are reading modes available.

EPA CompliantMeasurement – The HI98703 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 – A two, three, or four-point turbidity calibration can be performed by using the supplied (<0.10, 15.0, 100, and 750 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.

Fast Tracker^™ – For advanced ˜field applications, the HI98703 is equipped with Fast Tracker^™ – Tag Identi˜fication System (T.I.S.) that makes data collecting and management simpler than ever. Fast Tracker^™ allows users to record the time and location of a speci˜fic measurement or series of measurements using iButton^® tags near sampling points for quick and easy readings. Each iButton^® tag contains a computer chip with a unique identi˜cation code encased in stainless steel.

GLP Data – The HI98703 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 RS232 or USB port and the HI92000 software.

Backlit Display – A backlit LCD display provides an easy to understand, user-friendly interface. Displayed codes guide the user step-by-step through routine operation and calibration.

Significance of Use

• 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:

The HI98703 meets and exceeds the meter criteria speci˜ed by the EPA Method 180.1 and Standard Methods for the Examination of Water and Wastewater 2130 B.

Principle 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