Plastic Pasteur pipettes, also referred to as transfer pipettes, have their stems and bulbs in the form of a single piece made of plastic. There are different sizes. The volumes are usually marked on the stem, though the markings are rather crude and are not particularly accurate.
Research Methods in Sociology â An Introduction. An introduction to research methods in Sociology covering quantitative, qualitative, primary and secondary data and defining the basic types of research method including social surveys, experiments, interviews, participant observation, ethnography and longitudinal studies. Why do social research?
Scientific Method for Sociology. An area of inquiry is a scientific discipline if its investigators use the scientific method, which is a systematic approach to researching questions and problems through objective and accurate observation, collection and analysis of data, direct experimentation, and replication (repeating) of these procedures.