The Top 4 Turbidity Meters in Australia

Turbidity meters are a water quality assessment tool that measures the turbidity (or cloudiness) of water. Turbidity meters are often used in water treatment plants, as well as in fieldwork to measure the water quality of rivers, lakes, and mangroves.

For anyone interested in what makes one turbidity meter better than another, or overwhelmed by the range of turbidity meters on the market, Instrument Choice scientists have compiled a list of the top four turbidity meters currently available in Australia.

About Turbidity

Turbidity is the haziness or loss of transparency of a fluid, caused by the presence of suspended particles, that are invisible to the naked eye. As the number of particles increases, so too does the turbidity. For example, a glass of drinking water has very low turbidity, compared to a river or lake after a rainstorm, which can have very high turbidity.

If you would like to know more about turbidity meters and how they work, See Instrument Choice’s article ‘What is a Turbidity Meter?’

The Top Four Turbidity Meters

1.NTU Turbidimeter, IP67, Cal Kit, Case

Product Code: EC-TN100-IR

The EC-TN100-IR is a microprocessor-based, waterproof, fast, and accurate turbidity meter. This meter is IP67 rated water and dustproof, and it floats on water! Instrument Choice recommends it for the demands of rugged field applications.

Key Features

Units of Turbidity Measurement: NTU

Light Source: Infrared-emitting diode (850nm wavelength)

Range: 0 to 2000 NTU

Accuracy: < 0.1 NTU for 0.02 NTU standard; ±2 % of reading ±1 digit for 0 to 500 NTU; ±3 % of reading ±1 digit for 501 to 2000 NTU

Calibration Points: Up to 4 points; 0.02 NTU, 20.0 NTU, 100 NTU, 800 NTU

2.TN400 Portable Turbidity Meter Kit

Product Code: IC-TN400

The IC-TN400 is equipped with a large TFT coloured screen and is designed for easy and reliable turbidity measurements from 0 to 1000 NTU in various applications, both in-field and in-lab. Ideal applications include environmental monitoring, water treatment and beverage making.

Key Features

Units of Turbidity Measurement: NTU

Light Source:Infrared-emitting diode 850nm wavelength

Range:0 to 1000 NTU

Accuracy: ≤ ± 1% of reading or 0.02 NTU, the greater of the two

Calibration Points: Up to 4 points; 0.02 NTU, 20.0 NTU, 100 NTU, 800 NTU(Polymer)

3.Portable Logging Turbidity Meter

Product Code: HI93703

Measurements are made quickly and repeatedly through a sophisticated yet easy-to-use microprocessor that provides laboratory-level accuracy for in-field turbidity measurements.

Key Features

Units of Turbidity Measurement: FTU

Light Source: Infrared LED

Range:0.00 to 50.00 FTU; 50 to 1000 FTU

Accuracy:±0.5 FTU or ±5% of reading (whichever is greater)

Calibration Points: Calibration: 3 points; 0 FTU, 10 FTU and 500 FTU

4.Turbidity And Free, Total Chlorine Benchtop Meter

Product Code: HI83414

HI83414 is a highly accurate dual parameter instrument, successfully combining turbidity and colourimetric measurements to test turbidity and free/total chlorine. The meter is specially designed for water quality measurements, providing reliable and accurate readings on low turbidity values.

Note: the HI83414 meets and exceeds the requirements of USEPA and Standard Methods for turbidity measurements.

Key Features

Units of Turbidity Measurement:Turbidity Nephelometric method (90 ) and Ratio Nephelometric Method (90 & 180 ).

Light Source:
Tungsten filament lamp

Range:Non-Ratio Mode: 0.00 to 9.99; 10.0 to 40.0 NTU. Ratio Mode: 0.00 to 9.99; 10.0 to 99.9; 100 to 4000 NTU

Accuracy: ±2% of reading plus 0.02 NTU, ±5% of reading above 1000 NTU 

Calibration Points: Two, three, four or five-point calibration; <0.1, 15, 100, 750 and 2000 NTU

Conclusion

Turbidity meters are an essential water quality testing tool. Given the important role they play, it’s essential to be aware of each meter’s ideal applications and specifications before you make a purchase.

The top four turbidity meters in Australia Instrument Choice lists above cover the range of specifications you are likely to encounter. The models featured are also representative of such alternative features as portability or benchtop, LED or visible light, as well as different measurement ranges and calibration statuses.

Do you need more technical advice on turbidity meters or any of the products listed above? Contact one of the Instrument Choice Scientists. We’re here to help! Call 1300 737 871 or email [email protected].