The VDMA  specifies in its practice code, which allows to test the efficiency of the sterilisation devices on packaging, that the inoculums should be prepared without salt. Indeed during the drying of the inoculums the presence of salt forms like a protective layer on it and it has an important impact on the decontamination results.
We could consider them as synonyms. However, for the persons familiarized with microbiology, these words do not mean definitiely the same thing. As a grammar rule, these words follow microbiologic rules.
Bedford (1927) and Gates (1929) were among the first to scientifically quantified the bactericidal action of UV. Today, UV light performed by mercury lamps at 254 nm is a well-established sterilization technique for surfaces and water . However, the ability of some microorganisms to repair the DNA damage caused by UV light at low doses was a first limit of the mercury lamp. Secondly, if mercury bulbs break, dangerous mercury vapor may be released.
The alternative ? A lamp filled with inert gas, able to generate intense short pulse of UV light...