1300 662 720

Customer Support

1300 662 720

Customer Support


Turbidity Meter

Currently Out of Stock, Backorder only! This item may take 3-4 weeks to deliver. Call us on 1300 662 720

$ 957.14 Ex. GST


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Turbidity refers to the concentration of undissolved, suspended particles present in a liquid.

Turbidity is a measure of the clarity of a sample.
For potable water applications turbidity is a good indicator of water quality.
Turbidity Measurement is achieved by analyzing the amount of light refracted from suspended particles such as clay, silt and organic material.
By measuring turbidity, by photometric or tube methods, it is possible to estimate suspended solids content.

Mi415 has two operating ranges; 0.00 to 50.00 FNU, and 50 to 1000 FNU that can accommodate the most turbid condition you may encounter.

Mi415 is supplied in a hard carrying case, complete with reagents.

Introduction to Turbidity

The cloudy appearance of water (called Turbidity) is caused by suspended material.
The unit of measure adopted by the ISO Standard is the FNU (Formazine Nephelometric
Unit) and by EPA is NTU (Nephelometric Turbidity Unit).
The other two methods used to test for turbidity and their measurement units are the JTU (Jackson Turbidity Unit) and the Silica unit (mg/L SiO2).
See the conversion table of these methods and their units for your reference.

turbidity chart


Mi415 is supplied complete with 2 cuvets, reagents, hard carrying case, wiping tissue, 9V battery and instructions.


Range 0.00 to 50.00 FNU; 50 to 1000 FNU
Resolution 0.01 FNU; 1 FNU
Accuracy ±0.5 FNU or ±5% of reading, whichever is greater
Method detection of scattered light
Light Source high emission infrared LED
Light Detector silicon photocell
Environment 0 to 50°C / 32 to 122°F; max RH 100%
Battery Type 1 x 9V
Auto-off after 5 minutes of non-use
Dimensions 192 x 104 x 52 mm
Weight 380 g



Instruction Manual