ASPEX dry pumping option
ASPEX, who specialize in small footprint SEMs that are geared for automated particle analysis, now offer an dry rough pumping option. This is useful if you want a cleaner and quieter alternative to the usual oil rotary pumps normally installed with an SEM. You might want this if you need an SEM in a clean facility or in a confined space where the noise/fumes/heat associated with an oil rotary pump become an issue.