SELECTION OF A BIOAEROSOL SAMPLERTo select an appropriate device, users must clearly outline:(1) their reasons for collecting air samples and the intended use of the data(2) the biological agents they wish to study and the information they need about them(3) how samples will be assayed and the detection limits of the methods(4) the estimated or previously measured bioaerosol concentration at the test site(5) The aerodynamic diameters of the particles to be collected(6) the velocity of the sample air stream(7) environmental conditions