A person who is 771 appointed an Inspector under the Act shall be a person who (a) has a degree in Pharmacy or Pharmaceutical Chemistry or a post graduate degree in Chemistry with Pharmaceutics as a special subject of a University recognised for this purpose by the appointing authority or the associateship Diploma of the Institution of Chemists (India) obtained by passing the examination with `Analysis of Drugs and Pharmaceuticals ' as one of the subjects; or (aa) holds the Pharmaceutical Chemists Diploma granted by the Pharmaceutical Society of Great Britain; or (b) x x x (c) is a graduate in medicine or science of a University recognised for this purpose by the appointing authority and has at least one year 's post graduate training in a laboratory under (i) a Government Analyst appointed under the Act or (ii) a Chemical Examiner, or (iii) a Fellow of the Royal Institute of Chemistry of Great Britain (Branch E), or (iv) the head of an institution specially approved for the purpose by the appointing authority; Provided that only those inspectors who have not less than three years ' experience in the manufacture and testing of substances specified in Schedule in a laboratory approved for this purpose by the licensing authority, shall be authorised to inspect the manufacture of items mentioned in Schedule C; Provided further that only Inspectors who are graduates in veterinary science or medicine or general science or pharmacy and have had not less than three years ' experience in the manufacture or testing of biological products shall be authorised to inspect the manufacture of veterinary biological products; Provided further that for a period of four years from the date on which Chapter IV of the Act takes effect in the States, persons whose qualifications, training and experience are regarded by the appointing authority as affording subject to such further training, if any, as may be considered necessary, a reasonable guarantee of adequate knowledge and competence may be appointed as Inspectors and authorised under the preceding proviso: Provided further that for the purposes of inspection of shops in any specified area any officer of the medical or Public Health Department who is a registered medical practitioner or a graduate in science may be appointed as an ex officio Inspector.