30 October 2014
Q. We are doing some experiments to quantify the amount of liquid residue on pipet walls before/ after cleaning. In practise, this would relate the accuracy of the pipet to its cleanliness. Could you inform us if the use of Alconox affects the amount of beading (of distilled water) on the walls of a brush cleaned and rinsed pipette, compared with the use of common dishwashing liquid? A. Proper cleaning of a pipet will result in the designed amount of fluid being measured in a pipet according designed amount of beading resulting from the correct clean surface energy of the pipet and the surface tension of the fluid being measured. Typically pipets . . .