i am a software engineering and science technician my deti below Lab technicians might collect samples, study and perform tests on body fluids, teeth, chemical compounds, biological specimens, or other fields of science. Lab techs use various types of machinery, lab equipment and complex computer programs to perform their tests. Lab techs also record their data or findings for study and scrutiny by doctors and physicians. Labs need to be sterile environments, so lab techs must maintain a clean environment.