What is meant by ppm or ppb?

All water and effluent test results and standards have a unit associated with them. These units give the amount of the pollutant per unit of water. The most common unit is the milligram per litre (mg/L) alias parts per million (ppm), which expresses the milligrams of a pollutant in every litre of water. Some laboratories prefer to use. Some contaminants that can be measured in very small quantities are reported in micrograms per litre (∝g/L), which is identical to a part per billion (ppb).

Keep in mind that concentrations expressed in mg/L (or ppm) can be converted to ∝g/L (or ppb) by multiplying by 1,000, and that ∝g/L (or ppb) can be converted to mg/L (or ppm) by dividing by 1,000.

• Analytical Services
• Water & Effluent Analysis
• Air & Emission Analysis
• Solid Waste Analysis
• Microbiological Analysis
• Food Analysis
• Analysis of Chemicals
• Speical Analysis
• Technical Consultancy
• Plant Design
• Environment Site Assessment<
• Environmental Impact Assessment
• Water and Wastewater Audit