How do I prepare folic acid capsules 1 mg According to the latest guidelines of the online version of the TMF?

The TMF describes

1. A 2% trituration

Rp/ folic acid 1.00 g *   diluent B Q.S. ad 50.0 g   * on the basis of the actual active substance content, an exact quantity corresponding to 1.00 g of anhydrous folic acid must be weighed 2. Preparation of   30 capsules   BV 4 mg Rp/ folic acid 4 mg *   diluent B Q.S. for 1 Gelule *   In The form of a 2% trituration of folic acid. Preparation method:   weigh 6.30 g from a 2% trituration of folic acid (5% overdose included to compensate for the loss during preparation * ) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- calculation for 50 capsules   1 mg folic acid; The folic acid has a content = 97.3% and a water content of 7.82%   A. Calculation of water-free raw material 1 g raw material contains 0.9218 anhydrous folic acid with a content of 97.3%   b. Calculation of the real content of folic acid in the water-free raw material 0.9218 x (97,3/100) = 0.869   Pure Folic acid C. Preparation of Trituration 2%   needed 2 x (1/0,869) = 2.3 g raw material for 100 g trituring being 1.15 g raw material for 50 g trituring   D.   Preparation of 50 capsules of folic acid 1 mg; for this I need 50 x 1 mg = 50 mg folic acid; 1 g trituration contains 20 mg of folic acid so I need 2.5 g trituration. E. Compensation for loss (5% extra) so I weigh  : 2.5 g X 1.05 = 2.625 g of the 2% trituration