Specifications

Turbidity refers to the concentration of undissolved, sus-
pended particles present in a liquid.
Turbidity is a measure of the clarity of a sample.
For potable water applications turbidity is a good indica-
tor 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 meth-
ods, 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.
Mi415
Turbidity Meter
Turbidity
42
www.milwaukeeinst.com
Ordering Information
Mi415 is supplied complete with 2 cuvets, reagents, hard
carrying case, wiping tissue, 9V battery and instructions.
Accessories
Mi515-100 AMCO-AEPA-1 @ 0 FNU calibration
solution, 30 mL
AMCO-AEPA-1 @ 10 FNU,
calibration solution, 30 mL
AMCO-AEPA-1 @ 500 FNU,
calibration solution, 30 mL
Mi0011 Glass cuvets (2 pcs)
Mi0012 Caps for cuvets (2 pcs)
Mi0013 Stoppers for cuvets (2 pcs)
Mi0004 Tissue for wiping cuvets (4 pcs)
Mi0005 9V battery (1 pc)
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 SiO
2
).
See the conversion table of these methods and their units for your reference.
JTU FTU (NTU/FNU) SiO2 (mg/L)
JTU 1 19 2.5
FTU 0.053 1 0.13
SiO
2 0.4 7.5 1
Specifications Mi415
Turbidity Meter
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
New