The HMC 67 Blower is a precision. The blower is equipped with a synchronous motor to insure uniform RPM and therefore consistent test results. Airflow is regulated with a calibrated venire gate and adjusted with a calibrated hand wheel for precise adjustments that can be easily repeated. Large tube kit is built laboratory machine designed to separate light and heavy fractions of a great variety of seedsstandard with the HMC 67 Seed Blower. The HMC 67 Blower is ideally suited for performing the Uniform Blowing Procedure on Kentucky Bluegrass and other species as described in the AOSA Rules for Testing Seeds.