sigmahead
Re:The insulin racket: why a drug made free 100 years ago is recently ...
on Tuesday June 25, 2019 @12:29PM (#20275866)
Interesting! However on Sigma-Aldrich website it says:
technical grade, 60%
How do you get from 60% to 99%? Do you have to (for pharmaceutical grade)?
What are the remaining 40%? poison? harmless byproducts?