Residual Solvents Testing:Only Iso Propyl Alcohol. 1. Drug Layer Blend (lubricated) (3-5gm)2. Core tablets (Bilayer) (10 Tablets) ACETONE + Iso Propyl alcohol1. Final Functional Coated tablets (before drying) (10 Tablets). 2. After 2 hours Drying in Coating Machine (10 Tablets). 3. After 12hrs. curing in oven(10 Tablets). 4. After 18hrs. curing in oven(10 Tablets). 5. After 24hrs. curing in oven(10 Tablets). Take out sufficient samples after 24 hours curing~10 kg. Continue curing for 36 hours. 6. After 30hrs. curing in oven(10 Tablets). 7. After 36hrs. curing in oven(10 Tablets). This study is for data generations of residual solvents. Additional test for water content after curing.