Blog General Laboratory Equipment

Turbidity Meter Test

7 Februari 2026 • 42x dilihat

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.

Turbidity Meter Test

Berikut ini adalah Portable Turbidity Brochure

Click Here : Lutron Turbidity Brochure
Click Here : HACH Portable Turbidity Meter Brochure
Click Here : Lohan Portable Turbidity Meter Brochure

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.

Turbidity Meter Test

Portable Turbidity Feature

Portability & Durability: Rugged, waterproof (IP67 rating common), lightweight design for field use.
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.
Accuracy & Resolution: Critical for low-level measurements. Look for instruments meeting regulatory standards (EPA Method 180.1, ISO 7027).
Calibration: Easy, menu-driven calibration using AMCO/AEPA-style primary standards (e.g., formazin polymer gels or stable suspensions).
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.
Display & Interface: Backlit LCD screens with intuitive menus.
Power Source: Rechargeable Li-ion batteries or standard AA batteries.

Turbidity Meter Test

Feature	Portable Turbidimeter	Benchtop (Lab) Turbidimeter
Location	Field use, on-site testing	Laboratory only
Speed	Immediate results on-site	Requires sample transport, risk of change
Sample Stability	Measures before particles settle	Sample can change during transport
Data Management	Good for field logging	Often more advanced software
Precision	Good to excellent	Typically highest precision for R&D
Cost	Generally lower	Higher

Berikut ini adalah Portable Turbidity Brochure

Click Here : Lutron Turbidity Brochure
Click Here : HACH Portable Turbidity Meter Brochure
Click Here : Lohan Portable Turbidity Meter Brochure

Lutron Turbidity Meter TU-2016
Feature
Designed to meet ISO 7027	High resolution : 0.01 NTU/1 NTU
NTU (Nephelometric TURBIDITY Unit ) measuring unit	Wide and auto measurement range : 0 to 1,000 NTU.
The unique optics structure, enables the instrument to read low value of TURBIDITY to the high level up to 1,000 NTU.	Microprocessor circuit assures maximum possible accuracy, provides special functions and features.
Four operation buttons and two calibration points, easy operation.	Battery operated for field and on-site testing convenience.
Jumbo LCD, easy readout.	Auto shut off is available to save battery life.
Data hold function for freezing the desired value on display.	Records Maximum and Minimum readings with Recall.
Application : Test municipal water, food and beverage water, or other aqueous solution where fluid clarity is important.	Heavy duty & compact housing with hard carrying case, designed for easy carry out & operation.

Turbidity Meter Test

SPECIFICATIONS LUTRON TURBIDITY METER
Circuit	Custom one-chip of microprocessor LSI circuit.
Display	LCD size : 41 mm x 34 mm
Range	0.00 to 50.00 NTU, 50 to 1,000 NTU * NTU : Nephelometric Turbidity Unit * Auto range
Resolution	0.00 to 49.99 NTU	0.01 NTU
	50 to 1000 NTU	1 NTU
Accuracy ( 23 ± 5℃ )	0.00 to 49.99 NTU : ± 5% reading or ± 0.5 NTU, whichever is greater.
	50 to 1000 NTU : ± 5% reading or ± 5 NTU, whichever is greater.
Light Source	LED, 850 nm.
Detector	Photo diode
Standard	Meet ISO 7027.
Response Time	Less than 10 seconds.
Sample Volume Needed	10 mL.
Data Hold	Freeze the display reading.
Memory Recall	Maximum & Minimum value.
Display Sampling Time	Approx. 1 second.
Power Off	Auto shut off saves battery life or manual off by push button.
Calibration Points	0 NTU, 100 NTU.
Operating Temperature	0 to 50 ℃.
Operating Humidity	Less than 85% R.H.
Power Supply	DC 1.5 V battery ( UM4, AAA ) x 6 PCs, or equivalent.
Power Current	Stand by	Approx. DC 3.5 mA.
	Testing	Approx. DC 36 mA.
Weight	320 g/0.70 LB. @ Battery is included.
Dimension	155 x 76 x 62 mm ( 6.1 x 3.0 x 2.4 inch)
Accessories Included	Testing bottle with 0 NTU standard solution	1 PC
	Testing bottle with 100 NTU standard solution	1 PC
	Empty testing bottle	2 PC
	Clean cloth	1 PC
	Clean solution ( Distill water )	1 bottle
	Hard carrying case, CA-08	1 PC
Optional Accessories	* Testing bottle with 100 NTU standard solution, TU-100NTU
	* Testing bottle with 0 NTU standard solution, TU-0NTU
	* Empty testing bottle, 0601

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