Labman
Portable Turbidity Meter LMTB5P (Nephelometric 90° Method, USB Interface)
Portable Turbidity Meter LMTB5P (Nephelometric 90° Method, USB Interface)
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Portable Turbidity Meter LMTB5P is designed for accurate turbidity analysis in laboratory, environmental, and field testing applications. Based on the nephelometric 90° measurement principle, the instrument delivers reliable and repeatable turbidity measurements for water quality monitoring and industrial testing.
The meter supports turbidity measurement ranges up to 1100 NTU with selectable units including NTU, FNU, EBC, and ASBC, making it suitable for multiple industrial and laboratory standards. Multi-point calibration capability using Formazin standards improves measurement accuracy across different turbidity ranges.
LMTB5P features both single and continuous measurement modes, allowing users to perform rapid sample analysis and vial indexing for improved repeatability. The instrument automatically detects stable readings and locks the measurement endpoint for simplified operation.
An infrared 850 nm light source combined with a silicon photoelectric detector ensures stable optical performance with low stray light interference. The compact handheld design with battery operation makes the instrument suitable for portable field applications.
The system includes internal memory for storing up to 100 data sets, USB communication interface for data transfer, automatic power-off functionality for battery conservation, and customizable operational settings including calibration points, resolution, and date/time configuration.
LMTB5P is suitable for water treatment plants, environmental monitoring, industrial wastewater testing, food and beverage processing, educational laboratories, and on-site field analysis applications.
Key Features
Portable turbidity meter with nephelometric 90° method
Measurement range up to 1100 NTU
Selectable turbidity units including NTU, FNU, EBC, and ASBC
2 to 5-point calibration using Formazin standards
Infrared 850 nm optical system
Single and continuous measurement modes
Automatic endpoint detection and reading lock
USB communication interface for data transfer
Internal memory for up to 100 readings
Auto power-off and automatic shutdown functions
Battery and DC adaptor operation
Compact handheld design with carrying case
Technical Specifications
| Parameter | Specification |
|---|---|
| Principle | Nephelometric Method (90°) |
| Turbidity Measuring Range | 1–1100 NTU / 0–275 EBC / 0–9999 ASBC |
| Display Resolution | 0.01 (1–99 NTU), 0.1 (100–999 NTU), 1 (1000–1100 NTU) |
| Measurement Accuracy | ±3% |
| Calibration Point Option | 2 to 5 Points (0.02, 10, 200, 500, 1000 NTU) |
| Calibration Standards | 200, 500, 1000 NTU |
| Turbidity Units | NTU, FNU, EBC, ASBC |
| Light Source | Infrared Light Emitting Diode, 850 nm |
| Detector | Silicon Photoelectric Detector |
| Stray Light | <0.02 NTU |
| Vial Size | 60 mm Height × 25 mm Diameter |
| Sample Volume | Approx. 30 ml |
| Carrying Case | Available |
| Auto Power Off | Yes |
| Display | LCD |
| Data Storage | Up to 100 Data Readings |
| Ambient Temperature | 10°C to 40°C |
| Interface | USB |
| Power Supply | 3 × AA Batteries or DC 5V Power Adaptor |
| Dimensions (L×W×H) | 290 × 90 × 240 mm |
| Weight | 1 kg |
Applications
Portable water quality testing
Environmental monitoring and field analysis
Municipal water treatment testing
Industrial wastewater analysis
Food and beverage quality control
Educational and research laboratories
On-site turbidity measurement applications
