Analyse samples of food and drugs offered for sale to determine their purity. Provide analytical services to municipal inspectors.;;In the annual report for 1935 Govt Analyst E Ward notes "During the first half of the year analytical work was carried out under very unsatisfactory conditions which had prevailed for many years, and under which I carried out all work as was required for all Government Departments for a fixed sum, providing my own assistants and supplies, including even lighting and telephones, I was allowed to charge fees for work performed for private persons and to have the use of the laboratory equipment as was therein in 1904.;;On the I July last effect was given to a reorganisation by which the Laboratory amalgamated with that ot Mr Johnstone, The Agricultural Chemist, and the whole constituted a Branch of the Public Health Department.