[QUOTE="Fuzzy Duck, post: 4142894, member: 136654"Organic based nutrients are difficult to get E.C - electrical conductivity & PPM - parts per million readings from due to the nature of organic based nutrients.[/quote]
In theory, you could do it the crap-factory (wastewater treatment plant) way: Take a sample, flash-dry it, then weigh the reservoir on a really accurate scale (ten-thousandth of a gram or better, lol). But the scale is expensive, and at that level you have to worry about air currents and vibrations, so you'd probably want to place the scale in a glass case and set it on a really heavy granite table, like they do at the municipal facility.
In theory, you could do it the crap-factory (wastewater treatment plant) way: Take a sample, flash-dry it, then weigh the reservoir on a really accurate scale (ten-thousandth of a gram or better, lol). But the scale is expensive, and at that level you have to worry about air currents and vibrations, so you'd probably want to place the scale in a glass case and set it on a really heavy granite table, like they do at the municipal facility.