William Creznavetch wrote:
What is TDS ? and how i can get the calculation of it manually without
devices.
Thanks , William


If you boil away a litre of aquarium water until you are left with a
white salty residue, this is the Total Dissolved Solids. But you would
still have to weigh this residue with a "device" to get the TDS. A gram
of this substance would mean a TDS of 1000 ppm. I use a TDS meter which
measures the resistance of the water to infer the value. Much easier!

Nikki