A Professional Chemist must have been active in the Practice of Chemistry for 400 hours in one year or 1200 hours in three years and have obtained 50 PDCs in one year or 150 PDCs in three years to be eligible for renewal of registration. If a Professional Chemist is unable to claim the required number of hours or PDCs, the deficit may be made up for in either or both of the subsequent two years. To request permission to do this, the Professional Chemist must complete and sign the request provided below.