One thousand parts per billion equals one part per million: 1000 ppb = 1 ppm
To derive ppm from the numbers in the report, just divide the ppb numbers by 1000 to get ppm. (It�s all metric, which is what makes it super easy to translate units.
Mass: This is the accurate atomic mass of the elemental isotope being analyzed. Some elements have more than one isotope and therefore have more than one mass that's analyzed.
Conc: This means "concentration" and is given in ppb.
Units: Confirms that the units being used are ppb.
RSD(%): Relative Standard Deviations. Describes the statistical certainty of the result for that element. Lower numbers means more data points and greater confidence. It is perfectly normal to see an element with a very low concentration have a very high RSD. This is because very few ions of the element were available to detect.
Det: (Analog/Pulse) Describes the detection mode of the ICP-MS detector. "Pulse" means digital and is used for very low concentrations. Analog is used for higher concentrations. This is not really important for you to consider, but it helps scientists understand the analysis better.
Purchase our testing kits and send us your samples for authoritative, accurate quantitative testing:
CWC Labs tests nutritive minerals and toxic heavy metals using ICP-MS instrumentation capable of sub-parts per billion detection.
Glyphosate, AMPA, pesticides and agricultural chemicals are tested via LC-MS-MS (triple quad mass spec) using ion fragment quantitation and confirmation protocols.
Note: CWC Labs does not test biological liquid samples such as urine, blood or breast milk. We do, however, test hair for heavy metals.
CWC Labs is ISO-17025 accredited, which is the "gold standard" for analytical testing accuracy.