Depending on where he works, a laboratory technician may conduct a wide variety tests on various samples. He may be responsible for receiving the samples and recording their receipt before conducting the appropriate tests. The tech may also record the results of the tests and store or dispose of the sample appropriately. While performing tests, he is often responsible for making sure the sample, equipment, and any required chemicals are handled correctly. Proper handling is important not only for avoiding contamination of the sample, but also for safety in the lab.