Use the shaker with Weider Protein 80+. The Shaker is super tight, not a drop bib. It has 2 scales (OZ and ML), which you can mix well. In relation 500ml milk and 2 tablespoons of powder there is a super creamy shake, the screen actually makes any lumps small. To Spülmaschienenfestigkeit I can not say much because I rinse by hand, unfortunately.
