Definition of chemica penetration

Description:The mutant CPEs that were available commercially were obtained from Sigma. The SC pieces were then dried at room temperature for 48 h at the end of which interferograms were recorded again. Spectra were recorded by using a Nicolet Magna spectrometer setup at a resolution of 2 cm-1 and were averaged over scans. For this reason, standards bodies, vendors, customers, and workers are engaged -- often in the pages of this very magazine -- in ongoing conversations to determine the appropriate levels of protection for a given task.

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