Handheld Turbidity Meter Kit

Portable Turbidity Meter Kit with Shock Resistant Carrying Case

Portable Turbidity Meter is an easy-to-use handheld instrument that quickly determines the number of suspended particles in water by accurately measuring turbidity by the intensity of reflected light. Values are proportional to the number of suspended particles in the sample.

The Portable Turbidity Meter meets EPA specifications for testing drinking water and is useful for measuring the clarity of aqueous solutions in general, such as low-level drinking water, mid-range industrial, and high-range environmental applications. A tube-positioning ring limits tube variability for optimal sensitivity and accurate results. The multi-detector optical configuration provides long-term stability and enhances detection capabilities across various water quality applications.

How Does This Product Work?

Different modes allow for testing with different units of measure: Nephelometric Turbidity Units (NTU), Formazin Nephelometric Units (FNU), and Formazin Attenuation Units (FAU). Additional units of measure are ASBC (American Society of Brewing Chemists) and EBC (European Brewery Convention).

NTU and FNU measures scattered light from the sample at a 90-degree angle from the incident light. NTU is most often used when referencing the USEPA Method 180.1 or Standard Methods for the Examination of Water and Wastewater, and FNU is often used when referencing the ISO 7027 (European) turbidity method. FAU measures the decrease in transmitted light through the sample at 180 degrees to the incident light and is not considered a valid turbidity measurement by most regulatory agencies.

Nephelometric mode measures 0–40 NTU/FNU, ratiometric mode 40–1,000 NTRU/FNRU and 1,000–2,000 AU. Meter readings include a range of 0–100 NTU and 0–2,000 AU. Accuracy is ±0.05 NTU from 0–2.5 NTU and ±2% from 2.5–100 NTU. Resolution is 0.01 to 1.0 NTU, dependent upon range.

Power is provided by a built-in 3.7V Lithium-ion battery, rechargeable via USB cable or wall adapter. Optional 12VDC Car Charger is sold separately. The Kit contains all the components needed to measure and monitor turbidity in adherence to USEPA 180.1.

Features

• CE-marked and waterproof to IP67

• Tungsten lamp and large 6-line LCD with backlit display

• 500-point data logging; view results directly on the instrument

• Auto shut-off feature after 5, 10, or 30 seconds, or disabled

• 7 user-selected languages: English, Spanish, French, Japanese, Chinese, Italian, and Portuguese

Included Items

• Portable Turbidity Meter

• NTU Standards (0, 1, and 10)

• Sample bottle

• (6) sample tubes

• USB Cable with a wall adapter

• Shock resistant carrying case

Unit of Measure

Nephelometric: NTU, ASBC, EBC

Ratiometric: NTU, NTRU, ASBC, EBC

Attenuation: NTU, AU, ASBC, EBC

Range

Nephelometric: 0–100 NTU/FNU, 0–1,750 ASBC, 0–25 EBC

Ratiometric: 0–1,000 NTRU/FNRU, 0–17,500 ASBC, 0–250 EBIC

Attenuation: 0–2,000 AU/FAU, 0–70,000 ASBC, 0–1,000 EBC

Resolution

Nephelometric: 0–10.99 NTU/FNRU: 0.01 11.0–109.9 NTU/FNRU: 0.1

Ratiometric: 0–10.99 NTRU/FNRU: 0.01 NTRU/FNRU, 11.0–109.9 NTRU/FNRU: 0.1 110–1,000 NTRU/FNRU: 1.0

Attenuation: 0–2,000 AU/FAU: 1

Accuracy

Nephelometric: 0–2.5 NTU/FNU: ±0.05 2.5–100 NTU/FNU: ±2%

Ratiometric: 0–2.5 NTRU/FNRU: ±0.05 2.5–100 NTRU/FNRU: ±2% 100–1,000 NTRU/FNRU: ±3%

Attenuation: 0–2,000 AU/FAU: ±10 AU/FAU or 6% whichever is greater

Capacity

Sample Chamber: 25mm flat-bottomed test tubes

Sample: 10mL in capped tube

Detection Limit

Nephelometric: 0.05 NTU/FNU

Ratiometric: 0.05 NTRU/FNRU

Attenuation: 10 AU/FAU

Range Selection          Automatic

Light Source    Tungsten lamp 2300 °K, ±50 °K

Detector          Photodiode, centered at 90° and 180°, maximum peak 400–600mm

Response Time            < 2 seconds

Signal Averaging          Disabled, 2, 5, 10

Dimensions     Meter Dimensions: 7.5 x 3.5 x 2.5in (191 x 89 x 64mm) WxDxH

Meets Standard(s):

USEPA 180.1

What is Turbidity and Why is it Important?

Turbidity is a measure of the cloudiness or haziness of a liquid, caused by the presence of suspended particles or impurities. It is an important parameter in various industries, including environmental testing, wastewater, petrochemical, beverage, and electroplating. Monitoring turbidity is crucial to ensure the quality of water and other liquids, as high levels of turbidity can indicate the presence of contaminants or pollutants. Turbidity is measured in Nephelometric Turbidity Units (NTU), which is an internationally recognized standard.

Portable turbidity meters are designed to provide accurate and reliable measurements of turbidity in various applications. Some key features and benefits of these meters include:

• High accuracy and long-term stability, thanks to advanced technologies such as multi-detector optical configurations and signal averaging

• Rugged durability and shock-resistant carrying cases, making them ideal for field operation and harsh environments

• Extended range and ideally suited for high-range environmental applications, as well as low turbidity solutions

• Portable and handheld design, allowing for easy transportation and use in the field or lab

• White light technology, which provides accurate measurements of turbidity in various types of aqueous solutions

• Automatic calibration and maintenance features, such as auto-ranging and min-max recall, to ensure accurate results and minimizes stray light and downtime

Calibration and Maintenance

Calibration and maintenance are essential to ensure the accuracy and reliability of portable turbidity meters. Here are some key considerations:

• Calibration: Portable turbidity meters should be calibrated regularly using certified calibration solutions, such as AMCO Polymer or Formazin Solution. The calibration process should be performed according to the manufacturer’s instructions and should include a calibration record to track the date and time of calibration.

• Maintenance: Regular maintenance is necessary to ensure the longevity and accuracy of the meter. This includes cleaning the sample vials and meter, replacing the batteries, and checking for any damage or wear and tear.

• Stray light: Stray light can affect the accuracy of turbidity measurements. Portable turbidity meters should be designed to minimize stray light, and users should take steps to reduce stray light during measurements, such as using a silicone oil or other anti-reflective coating.

• USB cable: Many portable turbidity meters come with a USB cable for data transfer and communication with a computer. Users should ensure that the USB cable is properly connected and that the meter is properly configured for data transfer.