Ppm's And Temp's

[costa]

Can your ppm go up if you use colder water than you usually use ?

 

[DrMcSkunkins]

Can your ppm go up if you use colder water than you usually use ?

The electrical conductivity of the water depends on the water temperature: the higher the temperature, the higher the electrical conductivity would be. The electrical conductivity of water increases by 2-3% for an increase of 1 degree Celsius of water temperature. Many EC meters nowadays automatically standardize the readings to 25oC.


While the electrical conductivity is a good indicator of the total salinity, it still does not provide any information about the ion composition in the water.

The same electrical conductivity values can be measured in low quality water (e.g. water rich with Sodium, Boron and Fluorides) as well as in high quality irrigation water (e.g. adequately fertilized water with appropriate nutrient concentrations and ratios).
http://www.smart-fertilizer.com/articles/electrical-conductivity

Ppm is just EC that has had a mathmatical equation applied.
TDS (ppm) = 0.64 X EC (μS/cm) = 640 X EC (dS/m)
Your tds meter has computer software that applies the equation for you.