ABSTRACT

Dynamic light scattering is at present the most frequently used

characterization technique to receive information on the size

of macromolecules or supramolecular structures and compact

colloidal particles. With the instruments available on the market,

measurements are quickly performed with agreeable reproducibil-

ity. The instruments are equippedwith powerful softwares such that

only a few manipulations are needed to obtain the desired results.

Easy handling of the instruments gives a safe feeling of reliability.

However, the easiness and high reproducibility of measurements is

deceptive and can become very misleading if one relies too much

on the computer and is not keeping a skeptical mind in relation

to physical expectations. Mostly the software of the instruments is

based on two significant conditions: