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?
There are many ways to categorize the different types of research. For example, research in different fields can be called different types of research, such as scientific research, social research, medical research, environmental research and so forth. The research methods that are used and purposes of the research also can be used to categorize the different types of research. A few of these types of research include quantitative and qualitative research; observational and experimental research; and basic, applied and developmental research.