What is "autosampler"

n. Any of various devices that automate a sampling process

An autosampler is commonly a device that is coupled to an analytical instrument providing samples periodically for analysis. An autosampler can also be understood as a device that collects samples periodically from a large sample source, like the atmosphere or a lake, for example.

Autosamplers enable substantial gains in productivity, precision and accuracy in many analytical scenarios, and therefore are widely employed in laboratories.