Golkor Inc (GKOR)

[Biochemist2002]

Yeah, ppb or ppm is just another way of reporting analyte concentration. For example, pph (parts per hunderd) is the same as percent (%)...(ex. 6pph is 6%). So maybe that will help put it in perspective. 6 ppt (parts per thousand) is 0.6% and so on. So ppb or ppm is still an acceptable reporting unit for solids (soil, rock, sludge, etc.). FYI, ppm is equivalent to mg/kg in solid samples (that is, mg of your analyte per kg of sample).

For liquid samples, ppb or ppm is equal to ug per liter of sample or mg per liter of sample, respectively.

So, those ppb or ppm units for solids, may also be converted to g/ton or oz/ton to make more sense for various applications. It all depends on what you're doing with the data. If someone gives me a sample and says "I need you to test this, it should be in the range of 2-6 oz/ton, that doesn't tell me a lot with regards to how to calibrate my instrument. Calibration standards don't come in oz/ton concentrations (at least none that I've ever seen). They are in ppm or ppb. So, you'd have to convert backwards to get it to the appropriate units of measurement to get the right working calibration range on your curve. Sorry, maybe a bit too much info, but who know, maybe someone will find it interesting.