Premier Mill Corp. has announced upgrades to all areas of their customer testing laboratory.      These upgrades include the installation of a new QMax Supermill, a model SM45 Supermill 2, a PSM 115V submersible mill with vacuum capability and a model ESD 2/1 pilot plant dual shaft mixer.      Other additions to the customer testing laboratory include a process Chiller to provide constant cooling water and to eliminate fluctuations in temperature and flow from the outside water supply, and e...