Turbidity is equal to the reduction of the transparency of a liquid due to the presence of particles in suspension. It can be measured by passing a beam of light through the sample. Turbidity is determined by measuring the light that is diffused by the particles in suspension.
The American standard is referred to as the USEPA method and recommends using a visible light source. The European standard subscribes to the Infrared method which has the advantage of being less sensitive to the colour of the samples. HANNA Instruments turbidity meters use both methods and are equipped with a 90° angle sensor.
HI 93703
This portable meter is based on the European standard IOS 7027. Easy to use, sturdy and light weight, this microprocessor-based meter provides lab-grade accuracy in on-site conditions.
click on photo
to enlarge |
|
Range |
0.00 to 50.00 FTU /
50 to 1000 FTU* |
|
Resolution |
0.01 / 1 FTU |
|
Accuracy |
± 0.5 FTU or ± 5% |
|
Light Source /
Life |
Infrared LED /
Life of the instrument |
|
Detector |
Silicon Photocell |
|
Batteries |
4 x 1.5V AA /
60 hours or 900 measures
Auto-shut off after 5 minutes |
|
Accessories |
HI 93703-0
HI 93701-10 |
Calibration solution
AMCO-EPA-1 @ 0 FTU
Calibration solution
AMCO-EPA-1 @ 10 FTU |
|
* 1 FTU (Formazine Turbidity Unit) = 1 NTU (Nephelometric Turbidity Unit)
| |
C 102
This portable meter is based on the American standard. In addition to turbidity, you can also measure pH, Free and Total Chlorine, Bromine, Iodine, low range Iron and Cyanuric Acid.
click on photo
to enlarge |
|
Range |
0.00 to 9.99 NTU* |
|
Resolution |
0.01 and 0.1 NTU |
|
Light Source /
Life |
Pure green LED /
Life of the instrument |
|
Detector |
Two Silicon Photocells |
|
Batteries |
4 x 1.5V AA /
60 hours or 1 000 measures
Auto-shut off after
10, 20, 30, 40, 50 or 60 minutes |
|
Other Parameters |
Bromine, Chlorine (Free & Total),
pH, Iodine, Iron, and Cyanuric Acid |
|
Accessories |
HI 93102-0
HI 93102-20 |
Calibration solution
AMCO-EPA-1 @ 0 NTU
Calibration solution
AMCO-EPA-1 @ 20 NTU |
|
* 1 FTU (Formazine Turbidity Unit) = 1 NTU (Nephelometric Turbidity Unit)
| |