The Linshang LS311 is a compact multi-parameter water quality tester for drinking water, non-sewage surface water, seawater and aquaculture. A single immersion test reports nine parameters: COD, TOC, UV275, TDS, electrical conductivity, salinity, general hardness, specific gravity and temperature.
UV absorbance is used for COD, TOC and UV275 analysis, while conductivity measurement supports the calculated TDS, EC, salinity, general hardness and specific-gravity results. The color display groups the overall water-quality score into four easy-to-read grades for faster screening.
Key Features
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Nine water-quality parameters: Consolidates organic-content, dissolved-solids, conductivity, salinity, hardness, density and temperature information in one portable instrument.
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COD and TOC range up to 100mg/L: Supports rapid evaluation of organic contamination in suitable water samples.
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TDS up to 2000ppm and EC up to 4000µS/cm: Provides practical insight into dissolved material and ionic content.
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Salinity, hardness and specific gravity: Extends the instrument beyond a conventional TDS pen for seawater and aquaculture checks.
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Four-grade smart scoring: Color-coded Excellent, Good, Average and Poor results simplify initial water-quality assessment.
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Automatic temperature compensation: Improves measurement stability across changing sample environments.
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Compact color display: The 1.14-inch 240×135 TFT screen presents results clearly in a portable pen-style body.
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IP67 probe: Supports routine immersion measurements in field and facility environments.
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Lightweight operation: The approximately68g tester runs on two readily available AAA alkaline batteries.
Applications
- Tap, purified, bottled and groundwater screening
- Non-sewage surface-water checks
- Seawater salinity and specific-gravity measurement
- Aquaculture water monitoring
- Portable multi-parameter water-quality assessment
Why Choose the Linshang LS311?
The LS311 combines measurements that would otherwise require separate TDS, conductivity, salinity and organic-content instruments. Its compact format, guided scoring and nine-parameter readout make it a practical choice for rapid water screening without reducing the result to a single TDS value.
