Total Dissolved Solids (TDS)
Total Dissolved Solids (TDS) is a critical water quality parameter that measures the total concentration of dissolved substances present in water. These dissolved solids may include minerals, salts, metals, cations, anions, and other inorganic or organic compounds that are dissolved in water and pass through standard filtration processes.
QC Lab Solution Bangladesh provides accurate and reliable TDS testing services to support drinking water assessment, environmental monitoring, wastewater analysis, industrial process control, and regulatory compliance across Bangladesh.
What is Total Dissolved Solids (TDS)?
Total Dissolved Solids represent the combined content of all dissolved substances in water. TDS is widely used as an indicator of overall water quality and is important for evaluating the suitability of water for drinking, industrial use, agriculture, and environmental applications.
TDS is typically measured in:
- Milligrams per Liter (mg/L)
- Parts per Million (ppm)
Importance of TDS Testing
TDS testing helps determine water purity and detect changes in water quality. Elevated TDS levels may indicate high mineral content, salinity, industrial contamination, or other dissolved pollutants that can affect water usability and treatment requirements.
Applications of TDS Testing
Drinking Water Quality Assessment
- Potable water evaluation
- Bottled water testing
- Water treatment system performance
- Regulatory compliance monitoring
Groundwater Monitoring
- Aquifer quality assessment
- Well water testing
- Salinity evaluation
- Environmental investigations
Wastewater Analysis
- Effluent quality monitoring
- Treatment plant performance assessment
- Industrial discharge monitoring
Industrial Applications
- Boiler water monitoring
- Cooling water systems
- Process water quality control
- Manufacturing operations
Agricultural Applications
- Irrigation water quality assessment
- Salinity monitoring
- Agricultural water management
Common Components of TDS
- Calcium
- Magnesium
- Sodium
- Potassium
- Chloride
- Sulfate
- Bicarbonate
- Nitrate
- Trace metals
- Organic matter
Effects of High TDS Levels
- Unpleasant taste in drinking water
- Scaling in pipes and equipment
- Reduced industrial process efficiency
- Increased salinity
- Potential impacts on crops and irrigation systems
- Additional treatment requirements
Typical TDS Classification
| TDS Level (mg/L) |
Water Quality |
| Below 300 |
Excellent |
| 300 – 600 |
Good |
| 600 – 900 |
Fair |
| 900 – 1,200 |
Poor |
| Above 1,200 |
Unsuitable for many applications |
Water quality classifications may vary depending on local regulations and intended use.
Related Water Quality Parameters
TDS testing is commonly performed alongside:
- Electrical Conductivity (EC)
- pH
- Turbidity
- Total Suspended Solids (TSS)
- Dissolved Oxygen (DO)
- Chemical Oxygen Demand (COD)
- Biological Oxygen Demand (BOD)
Benefits of TDS Testing
- Evaluates overall water quality
- Supports drinking water safety assessments
- Monitors industrial process performance
- Helps identify contamination issues
- Supports environmental compliance programs
- Assists in water treatment optimization
Industries We Serve
- Water Treatment Plants
- Environmental Laboratories
- Municipal Water Authorities
- Food & Beverage Industries
- Pharmaceutical Manufacturers
- Power Plants
- Agricultural Projects
- Industrial Facilities
- Research Institutions
- Environmental Consulting Firms
Testing Standards
TDS analysis is performed according to internationally recognized standards, including:
- APHA Standard Methods for the Examination of Water and Wastewater
- ASTM Water Testing Standards
- ISO Water Quality Standards
- National Environmental Regulations
Why Choose QC Lab Solution Bangladesh?
- Advanced water quality testing capabilities
- Experienced environmental and laboratory specialists
- Accurate and reliable analytical results
- Fast turnaround time
- Professional technical support
- Comprehensive environmental monitoring solutions