4ml autosampler vial refers to a type of small glass or plastic container specifically designed for use in autosamplers, which are instruments used in analytical chemistry. Autosamplers are used to automatically inject samples into analytical instruments, such as gas chromatographs or liquid chromatographs, for analysis.
Autosampler vials are typically made of either glass or plastic, with glass vials being more commonly used for applications that require higher chemical resistance.
They are designed to be compatible with the specific requirements of the autosampler instrument, ensuring a secure fit and reliable sample injection.