Re: Paraffins in petroleum wax according ASTM D5442
Posted: Fri Jan 24, 2014 2:42 pm
This is the kind of thing that makes me glad that I do not work in an acronym-driven QC labYes, this make sense.
But in this case if you don't use the internal standard, you cannot report your result as: According to ASTM D5442. To report a result like this, you must use the ISTD in your sample analysis.
In petroleum industry, if you don't follow the standard methods, your analysis is not valid to specify a product.
Peter