brinkmann microrapid مطحنة
brinkmann microrapid mill. brinkmann micro rapid mill inlineskateschool brinkmann micro rapid mill guam Each sample was then ground under acetone in an automatic Brinkmann Micro mill fitted with an agate mortar and pestle for a time greater than 10 minutes This produced a sample with an average particle size of less than 5 pm and ensured thorough mixing of sample and internal standard