Hanna Instruments HI93703 Portable Turbidity Meter ISO Compliant
The HI93703 is a tabletop turbidity meter with high accuracy that can be used to precisely measure the turbidity of water and wastewater both outdoors and in the lab. It is possible to purchase the meter as a kit that includes all of the AMCO-AEPA-1 principal turbidity standards needed for calibration and performance evaluation. For turbidimetric measurements, the HI93703 satisfies and goes beyond the standards of the ISO 7027 Method.
- Up to three-point calibration
- Positive-locking cuvette system
- Water-resistant keypad
The HI93703 Portable Turbidity Meter was created specifically to detect the turbidity of water. It offers dependable and precise readings, even in low turbidity ranges. 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 LED light source’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.
Single Beam Design – The HI93703 measures turbidity using a light detector at 90° for detection of scattered light. Turbidity measurements can be made in the 0.00 to 1000 FTU range.
ISO Compliant – The HI93703 meets and exceeds the requirements of ISO 7027 method for turbidity measurements by use of an infrared LED light source. As this meter has been designed to follow this ISO method, the units are displayed in FTU (Formazine Turbidity Unit); FTU is equivalent to the other internationally recognized unit of NTU (Nephelometric Turbidity Unit).
Calibration – The HI93703 has a powerful calibration function that compensates for variation in light intensity. The calibration can be done using the supplied calibration solutions or user-prepared standards. A two or three-point turbidity calibration can be performed by using the supplied (0, 10, and 500 FTU) standards.
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.
Last Calibration Date – The HI93703 allows the user to store the last calibration date. Recall of the last calibration date is simple with a press of the “DATE” button on the face of the meter.
Low Battery Indicator – A “LO BAT” indication will appear on the lower right corner of the display when the batteries are low and need to be replaced. At this point, the instrument can still perform approximately 50 measurements. When the battery is too low to perform reliable measurements, a message appears and the meter will automatically switch off.
Significance of Use
Measurement of diffuse radiation for water with low turbidity (0 FNU to 40 FNU)
- The wavelength of the incident radiation shall be 860 nm.
- The spectral bandwidth of the incident radiation shall be less than or equal to 60 nm.
- There shall be no divergence from parallelism of the incident radiation and any convergence shall not exceed 1.5o.
- The measuring angle, theta, between the optical axis of the incident radiation and that of the diffused radiation shall be 90o ±2.5o.
- The aperture angle should be between 20o and 30o in the water sample.
The HI93703 meets and exceeds the meter criteria specied by ISO 7027.
Principle of Operation
Portable turbidity meter
Sample cuvettes (2)
Batteries (4 x 1.5V AA) and instructions
HI93703-0 (0 FTU) & HI93703-10 (10 FTU) calibration solutions
HI93703-50 cleaning solution
Tissue for wiping cuvettes
Rugged carrying case
The AMCO AEPA-1 standards for HI93703 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
Standard value @ 25 °C
Reference meter NIST traceable
Provided storage containers
- Protects from accidental breakage
|Product Name||HI93703 Portable Turbidity Meter ISO Compliant|
|Turbidity Range||0.00 to 1000 FTU|
|Turbidity Resolution||0.01 (0.00 to 50.00 FTU); 1 (50 to 1000 FTU)|
|Turbidity Accuracy||±0.5 FTU or ±5% of reading (whichever is greater)|
|Turbidity Calibration||three points (0 FTU, 10 FTU and 500 FTU)|
|Turbidity Light Source||silicon photocell|
|Turbidity Light Detector||infrared LED / life of instrument|
|Battery Type/Life||1.5V AA (4) /approximately 60 hours of continuous use or 900 measurements; auto-off after 5 minutes of non-use|
|Environment||0 to 50°C (32 to 122°F); RH max 95% (non condensing)|
|Dimensions||220 x 82 x 66 mm (8.7 x 3.2 x 2.6’’)|
|Weight||510 g (1.1 lb.)|
|Ordering Information||HI93703 is supplied complete with glass cuvette, batteries and instructions.|