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2020 Portable Turbidity Meter

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The 2020 Portable Turbidity Meters have a multi-detector optical configuration that assures long-term stability and minimises stray light and colour interferences. The portable turbidity meters use a 5 second signal averaging process to determine all turbidity meter readings. The portable turbidity meters achieve highly repeatable and rapid turbidity meter measurements using this process to minimises fluctuations in turbidity meter readings attributed to large particles. The portable turbidity meters are ideally suited for both low-level drinking water turbidity applications as well as monitoring high turbidity in the field. The portable turbidity meters come in two designs: one with a tungsten lamp to meet EPA 180.1 turbidity meter specifications, the other comes with a IR LED emitter and meets the ISO 7027 turbidity meter standard. The portable turbidity meters use a tube-positioning ring to limit tube variability enabling maximum sensitivity and accuracy.

Portable turbidity meters for accurate turbidity measurements in the laboratory or field studies.


Instrument Type: Nephelometer
EPA 180.1, 2020e
ISO7027, 2020i

Unit of Measure: NTU, FNU, FAU, ASBC, EBC
Range: 0-2000 NTU, 0-2000 FNU, 40-4000 FAU, 0-35000 ASBC, 0-500 EBC
Accuracy: ±0.05 or ±2% for readings below 100 NTU, whichever is greater, ±3% above 100 NTU

0.01 from 0.00 -10.99 NTU/FNU
0.1 from 11.0 -109.9 NTU/FNU
1 from 110 -4000 NTU/FNU
Detection Limit: 0.05 NTU

Display: Graphic LCD
Response Time: <5 seconds
Signal Averaging: Disabled, 2, 5 ,10

Light Source:
860nm LED (2020i ISO)
Tungsten (2020e EPA)

Photodiode, centered at 90°, maximum peak 550 nm, 2020e
Photodiode, centered at 90°, 2020i

Sample: 10 mL in capped tube
Sample Chamber: Accepts 25mm diameter flat-bottomed tubes (capped)
Data Logging: 4000 points
Serial Interface: RS232, 8 pin mDIN
Auto Shut-off: 5, 10, 30 min, disabled
Calibration: Field adjustable, 2-points
Languages: English, French, Spanish, Japanese (Kana), Portuguese, and Italian
Temperature: Operation: 0–50 °C; Storage: -40–60 °C
Operation Humidity Range: 0–90 % RH, non-condensing
Auto Shutdown: 0, 5, 10 or 30 minutes
Power Source: 9 Volt Alkaline or Optional AC adapter
Size (LXWXH): 8.5 x 16.2 x 6.7 cm, 3.4 X 6.4 X 2.6 inches
Weight: 12 oz. (339g) (Meter only)
Portable Turbidity Meters Options & Prices
2020e Portable Turbidity Meter (EPA)
Includes 0, 1, and 10 NTU standards, sample bottle, four sample tubes and an extra battery.

2020i Portable Turbidity Meter (ISO)
Includes 0, 1, and 10 NTU standards, sample bottle, four sample tubes and an extra battery

SMARTLink 2 Software on CD
Interface the 2020 with a Windows-based personal computer. The programme can be used to download data stored in the dataloggers of the meter. The program allows the user to identify, organize, view, manipulate and store data as a database on a PC. Data can also be copied and pasted or exported to other applications as and ASCII tab delimited text file.