The teeth of Galileo micro-titer combs are spaced to align with 8 & 12 channel pipettes. 1X micro-titer combs are spaced 9mm apart on centre and will align perfectly with multichannel pipettes. 2X micro-titer combs have teeth spaced 4.5mm apart, so that the pipette will fill every other well. Then simply by moving the pipette 1 well over (½ pipette space) the other set of wells can be filled. This sequence is repeated until all wells are filled.