How to convert TDS to conductivity

• Conductivity refers to a substance ability to hold an electric current.
• Unit of conductivity are measured in microsomes per centimetre.
• Pure water can not hold an electric charge but water contain minerals and salts which help to conduct the currents.
• So conductivity is related to amount of salt & minerals in the water.
• The salt amount in water is known as TDS or total dissolved solids.
• This is measured in parts per millions, ppm which can also be converted to mg/l.
• For conversion TDS to conductivity a conversion factor used which is depend on the types of minerals and salts dissolved in the water.
• If actual conversion factor can be found in a table but 0.67 is frequently used as an approximate conversion factor.
• Devide TDS by conversion factor .
• Conductivity= TDS / Conversion factor

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