Repeatability and minimum weight are parameters especially crucial for numerous analytical processes. With this fact in mind we have redesigned our weighing module and we have optimized constructional components of AS X2 PLUS analytical balances with the repeatability d = 0.01 mg. As a result we offer the best parameters worldwide, repeatability of 0.01 mg and minimum weight (USP) equal 20 mg. These two enable measurement of small mass with an accuracy impossible to be obtained for devices of this class so far.