Blog General Laboratory Equipment
Uji Test Air Turbidity Meter Portable
7 Februari 2026
•
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A Portable Turbidimeter is a handheld diagnostic tool used to measure the "cloudiness" or turbidity of a liquid. In the field, it is the primary way environmental scientists and water technicians determine if water is clean, contaminated, or effectively filtered.
A portable turbidimeter is a handheld, battery-operated instrument used to measure the turbidity of a liquid—essentially, how cloudy or hazy it is. Turbidity is caused by suspended particles like silt, clay, microorganisms, and organic matter that scatter and absorb light.
Uji Test Air Turbidity Meter Portable
The standard unit of measurement is the Nephelometric Turbidity Unit (NTU).
Most modern portable turbidimeters use a technique called Nephelometry.
The Process : The device shines a light beam (usually a tungsten lamp or an infrared LED) into a small glass vial containing the water sample.
The Measurement : Suspended particles (silt, algae, microbes) scatter the light. A sensor positioned at a 90° angle to the light source measures the intensity of this scattered light.
The Result : The more light that hits the 90° sensor, the higher the turbidity, measured in NTU (Nephelometric Turbidity Units) or FNU (Formazin Nephelometric Units).
Most modern portable turbidimeters use the nephelometric method defined by the US EPA. They have a light source (usually an LED) and a photodetector set at a 90-degree angle to the light path.
The instrument shines a beam of light into the water sample.
Suspended particles scatter the light.
The detector at 90° measures the intensity of this scattered light.
The more light scattered, the higher the turbidity reading.
Many advanced models also use ratiometric or multiple-detector technology (detectors at 90°, 180°, and other angles) to compensate for color absorption and varying particle sizes, improving accuracy across a wide range.
Portable Turbidity Feature
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Portability & Durability: Rugged, waterproof (IP67 rating common), lightweight design for field use.
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Measurement Range: Typically from 0 to 1000+ NTU (some go up to 4000 NTU). High-precision models focus on the low range (0-10 NTU) for drinking water compliance.
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Accuracy & Resolution: Critical for low-level measurements. Look for instruments meeting regulatory standards (EPA Method 180.1, ISO 7027).
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Calibration: Easy, menu-driven calibration using AMCO/AEPA-style primary standards (e.g., formazin polymer gels or stable suspensions).
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Data Logging & Connectivity: Most store hundreds of readings with time/date stamps and offer USB or Bluetooth connectivity to transfer data to a computer or smartphone.
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Display & Interface: Backlit LCD screens with intuitive menus.
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Power Source: Rechargeable Li-ion batteries or standard AA batteries.
Uji Test Air Turbidity Meter Portable
Feature
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Portable Turbidimeter
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Benchtop (Lab) Turbidimeter
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Location
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Field use, on-site testing
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Laboratory only
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Speed
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Immediate results on-site
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Requires sample transport, risk of change
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Sample Stability
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Measures before particles settle
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Sample can change during transport
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Data Management
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Good for field logging
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Often more advanced software
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Precision
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Good to excellent
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Typically highest precision for R&D
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Cost
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Generally lower
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Higher
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Uji Test Air Turbidity Meter Portable
Lutron Turbidity Meter TU-2016
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Feature
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Designed to meet ISO 7027
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High resolution : 0.01 NTU/1 NTU
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NTU ( Nephelometric TURBIDITY Unit ) measuring unit
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Wide and auto measurement range : 0 to 1,000 NTU.
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The unique optics structure, enables the instrument to read low value of TURBIDITY to the high level up to 1,000 NTU.
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Microprocessor circuit assures maximum possible accuracy,
provides special functions and features.
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Four operation buttons and two calibration points,
easy operation.
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Battery operated for field and on-site
testing convenience.
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Jumbo LCD, easy readout.
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Auto shut off is available to save battery life.
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Data hold function for freezing the desired value on display.
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Records Maximum and Minimum readings with Recall.
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Application : Test municipal water, food and beverage water, or other aqueous solution where fluid clarity is important.
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Heavy duty & compact housing with hard carrying case, designed for
easy carry out & operation.
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Uji Test Air Turbidity Meter Portable
SPECIFICATIONS LUTRON TURBIDITY METER
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Circuit
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Custom one-chip of microprocessor LSI circuit.
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Display
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LCD size : 41 mm x 34 mm
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Range
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0.00 to 50.00 NTU, 50 to 1,000 NTU
* NTU : Nephelometric Turbidity Unit
* Auto range
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Resolution
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0.00 to 49.99 NTU
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0.01 NTU
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50 to 1000 NTU
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1 NTU
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Accuracy ( 23 ± 5℃ )
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0.00 to 49.99 NTU : ± 5% reading or ± 0.5 NTU, whichever is greater.
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50 to 1000 NTU : ± 5% reading or ± 5 NTU, whichever is greater.
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Light Source
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LED, 850 nm.
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Detector
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Photo diode
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Standard
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Meet ISO 7027.
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Response Time
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Less than 10 seconds.
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Sample Volume Needed
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10 mL.
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Data Hold
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Freeze the display reading.
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Memory Recall
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Maximum & Minimum value.
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Display Sampling Time
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Approx. 1 second.
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Power Off
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Auto shut off saves battery life or manual off by push button.
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Calibration Points
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0 NTU, 100 NTU.
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Operating Temperature
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0 to 50 ℃.
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Operating Humidity
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Less than 85% R.H.
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Power Supply
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DC 1.5 V battery ( UM4, AAA ) x 6 PCs, or equivalent.
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Power
Current
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Stand by
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Approx. DC 3.5 mA.
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Testing
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Approx. DC 36 mA.
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Weight
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320 g/0.70 LB. @ Battery is included.
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Dimension
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155 x 76 x 62 mm ( 6.1 x 3.0 x 2.4 inch)
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Accessories
Included
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Testing bottle with 0 NTU standard solution
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1 PC
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Testing bottle with 100 NTU standard solution
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1 PC
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Empty testing bottle
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2 PC
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Clean cloth
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1 PC
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Clean solution ( Distill water )
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1 bottle
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Hard carrying case, CA-08
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1 PC
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Optional
Accessories
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* Testing bottle with 100 NTU standard solution, TU-100NTU
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* Testing bottle with 0 NTU standard solution, TU-0NTU
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* Empty testing bottle, 0601
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Uji Test Air Turbidity Meter Portable
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Uji Test Air Turbidity Meter Portable