what could i do to make the pipetting of a viscous sample easier?

Answer 1

you could try heating the sample, that will lower the viscosity of most materials

you could try using bigger pipette tips

Answer 2

The more viscous a material is, the less accurately it can be pipetted.
1) Follow above suggestion re wider tip and slow delivery.
2) Try using a plunger type pipet...as in a syringe.
3) For very viscous liquids, it may be better to determine its density then weigh out the required amount.

Answer 3

If you are using a micropipette and you don't need sterile tips, then you can cut a bit the edge of the tip with a pair of scissors so that the opening is bigger.
If you are using a big pippete (e.g. glass pipette of 2-10ml) do it very slowly. You DON'T want to heat the sample since that would change the volume&density and thus you wouldn't be using the actual amount that you want.