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Hanna Portable Turbidity Metre - (EPA) Portable Metre

The HI98703 is a high accuracy (±2% of reading plus 0.02 NTU) Turbidity Portable Metre.

Reliable and accurate readings, especially in the low turbidity range.

Hanna Turbidity
  • Description
  • Specification
The HI98703 Hanna Portable Turbidity Meter is specially designed for water quality measurements, providing reliable and accurate readings, especially in the low turbidity range. State-of-the-art optical system guarantees accurate results, assures long term stability, and minimizes stray light and color interference. Periodic calibration with the supplied standards compensates for any variations in intensity of the tungsten lamp.

Hanna Portable Turbidity Meter Features at-a-glance

  • Multiple reading modes – Normal measurement, continuous measurement, or signal averaging measurement.
  • EPA Compliant Measurement – 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.

Principle of the Hanna Portable Turbidity Meter Operation

A light beam passes through the sample and is scattered in all directions. The intensity and pattern of the scattered light is affected by many variables, such as wavelength of the incident light, particle size and shape, refractive index, and color. The optical system of the HI98703 includes a tungsten fi˜lament lamp, a scattered light detector (90°) and a transmitted light detector (180°). In the ratio turbidimeter range, the microprocessor of the instrument calculates the NTU value from the signals that reach the two detectors by using an effective algorithm that corrects and compensates for interference’s of color. The optical system and measuring technique also compensate for fluctuations in lamp intensity, minimizing the need for frequent calibration. In the non-ratio turbidimeter range, the NTU value is calculated from the signal on the scattered light detector (90°). This method off‰ers a high linearity on the low range but is more sensitive to lamp intensity ‡fluctuations. The lower detection limit of a turbidimeter is determined by stray light that is detected by the sensors but not caused by light scattering from suspended particles. The optical system of the HI98703 is designed to have very low stray light, providing highly accurate results for low turbidity samples. Turbidity Operation Diagram

Turbidity Standards

The HI98703-11 AMCO AEPA-1 standards ensure that measurements are traceable to a primary reference materials. These standards are used for calibration and performance verification of the turbidity meter.
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.
Hanna Chlorine Turbidity Carry Case
Carry case for Instrument, Cuvettes & Standards etc.
Hanna Instrument Rear Closeup
Rear showing RS232, USB and ID Tag Reader
Hanna ID Tag
ID Tags installed at regular sample locations for ID logging.
Hanna Instrument CAL Check™ standards with certificate
Hanna CAL Check™ Standards with Certificate
SKUHI98703-01
Product NameTurbidity (EPA) Portable Meter – HI98703
Quote RequiredNo
Turbidity Range0.00 to 9.99; 10.0 to 99.9; 100 to 1000 NTU
Turbidity Resolution0.01; 0.1; 1 NTU
Turbidity Accuracy±2% of reading plus 0.02 NTU
Turbidity Repeatability±1% of reading or 0.02 NTU, whichever is greater
Turbidity Stray Light< 0.02 NTU
Turbidity Calibrationtwo, three, or four-point calibration
Turbidity Measuring Methodratio nephelometric method (90° & 180°). Adaptation of the USEPA Method 180.1 and Standard Method 2130 B
Turbidity Measuring Modesnormal, average, continuous
Turbidity Light Sourcetungsten filament lamp
Turbidity Light Detectorsilicon photocell
Logging Memory200 records
ConnectivityUSB or RS232
Automatic Shut-Offauto-off after 15 minutes of non-use
Display60 x 90 mm backlit LCD
Battery Type/Life4 (1.5V) AA alkaline batteries
Power Supply4 (1.5V) AA alkaline batteries or AC adapter
Environment0 to 50°C (32 to 122°F), RH max 95% non-condensing
Dimensions224 x 87 x 77 mm (8.8 x 3.4 x 3.0”)
Weight512 g (18 oz.)

Ordering Information HI98703 is supplied with sample cuvettes and caps (5), HI98703-11 calibration cuvettes, silicone oil, cuvette wiping cloth, batteries, AC adapter, instruction manual, and rugged carrying case.

The HI98703 Hanna Portable Turbidity Meter is specially designed for water quality measurements, providing reliable and accurate readings, especially in the low turbidity range. State-of-the-art optical system guarantees accurate results, assures long term stability, and minimizes stray light and color interference. Periodic calibration with the supplied standards compensates for any variations in intensity of the tungsten lamp.

Hanna Portable Turbidity Meter Features at-a-glance

  • Multiple reading modes – Normal measurement, continuous measurement, or signal averaging measurement.
  • EPA Compliant Measurement – 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.

Principle of the Hanna Portable Turbidity Meter Operation

A light beam passes through the sample and is scattered in all directions. The intensity and pattern of the scattered light is affected by many variables, such as wavelength of the incident light, particle size and shape, refractive index, and color. The optical system of the HI98703 includes a tungsten fi˜lament lamp, a scattered light detector (90°) and a transmitted light detector (180°). In the ratio turbidimeter range, the microprocessor of the instrument calculates the NTU value from the signals that reach the two detectors by using an effective algorithm that corrects and compensates for interference’s of color. The optical system and measuring technique also compensate for fluctuations in lamp intensity, minimizing the need for frequent calibration. In the non-ratio turbidimeter range, the NTU value is calculated from the signal on the scattered light detector (90°). This method off‰ers a high linearity on the low range but is more sensitive to lamp intensity ‡fluctuations. The lower detection limit of a turbidimeter is determined by stray light that is detected by the sensors but not caused by light scattering from suspended particles. The optical system of the HI98703 is designed to have very low stray light, providing highly accurate results for low turbidity samples. Turbidity Operation Diagram

Turbidity Standards

The HI98703-11 AMCO AEPA-1 standards ensure that measurements are traceable to a primary reference materials. These standards are used for calibration and performance verification of the turbidity meter.
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.
Hanna Chlorine Turbidity Carry Case
Carry case for Instrument, Cuvettes & Standards etc.
Hanna Instrument Rear Closeup
Rear showing RS232, USB and ID Tag Reader
Hanna ID Tag
ID Tags installed at regular sample locations for ID logging.
Hanna Instrument CAL Check™ standards with certificate
Hanna CAL Check™ Standards with Certificate
SKUHI98703-01
Product NameTurbidity (EPA) Portable Meter – HI98703
Quote RequiredNo
Turbidity Range0.00 to 9.99; 10.0 to 99.9; 100 to 1000 NTU
Turbidity Resolution0.01; 0.1; 1 NTU
Turbidity Accuracy±2% of reading plus 0.02 NTU
Turbidity Repeatability±1% of reading or 0.02 NTU, whichever is greater
Turbidity Stray Light< 0.02 NTU
Turbidity Calibrationtwo, three, or four-point calibration
Turbidity Measuring Methodratio nephelometric method (90° & 180°). Adaptation of the USEPA Method 180.1 and Standard Method 2130 B
Turbidity Measuring Modesnormal, average, continuous
Turbidity Light Sourcetungsten filament lamp
Turbidity Light Detectorsilicon photocell
Logging Memory200 records
ConnectivityUSB or RS232
Automatic Shut-Offauto-off after 15 minutes of non-use
Display60 x 90 mm backlit LCD
Battery Type/Life4 (1.5V) AA alkaline batteries
Power Supply4 (1.5V) AA alkaline batteries or AC adapter
Environment0 to 50°C (32 to 122°F), RH max 95% non-condensing
Dimensions224 x 87 x 77 mm (8.8 x 3.4 x 3.0”)
Weight512 g (18 oz.)

Ordering Information HI98703 is supplied with sample cuvettes and caps (5), HI98703-11 calibration cuvettes, silicone oil, cuvette wiping cloth, batteries, AC adapter, instruction manual, and rugged carrying case.