an apparatus and method for use in the biopharmaceutical and chemical industries to facilitate the temporary attachment of standard laboratory glassware to vibratory mixers and other types of aggressive shaking equipment . the container holder couples the entire flask or container to the mixing equipment in a secure fashion . the technology may be used with conventional glass flasks , or with plastic flasks that can be configured for either single - use or multiple - use . the invention allows for single handed , low force insertion of the flaskware as well as the incorporation of sensors into the container holder .