There were usually not many chemist positions available in the same region, and the coal/oil chemistry experience was very much specialised to this one company.
The samples used in this study were synthesized by the same chemist using the same method, chemicals, and apparatus.
Inter-batch variation in this study is defined as the variation of the presence and quantities of impurities in extractions from different batches of methamphetamine synthesized by the same chemist using the same preparative method.
At bottom, she knows, a blind chemist does the same things any other chemist would do: gather and analyze data and look for trends.
The inter-batch variation increases to 27%, indicating that there is some variation in the quantity of this impurity across 20 batches of methamphetamine synthesized by the same chemist using the same equipment, method, and reagents.
For example, Lajiness et al. report a study of medicinal chemists at Pharmacia, who were asked to review lists of compounds in order to assess their potential as leads in a drug discovery programme [10]; not only were there marked inconsistencies between the chemists, but even the same chemist might give different assessments on different occasions.
July , 25 , 1920London, England, d. 1958, was a noted chemist with a Ph.D. from Cambridge, working in the same laboratory as Watson and Crick also on the structure of DNA.
It was independently isolated from cleveite in the same year by chemists Per Teodor Cleve and Abraham Langlet in Uppsala, Sweden, who collected enough of the gas to accurately determine its atomic weight.
Friedrich Stromeyer, a German chemist, discovered the element (1817) in a sample of zinc carbonate, and, in the same year, K.S.L. Hermann and J.C.H. Roloff found cadmium in a specimen of zinc oxide.
