Question

which option is not a recommended technique for dispensing liquid from a micropipette into another solution?
select one:
hold the micropipette at a 45 degree angle when dispensing.
dispense the liquid along the inside of the glassware.
submerge the micropipette tip completely into the solution before dispensing.
place the tip slightly below the level of the solution before dispensing.

Explanation:

When dispensing liquid from a micropipette, the tip should be placed slightly below the solution level (to prevent splashing and ensure proper transfer), dispensing along the glassware inside is a good practice (for better mixing and to avoid losses), and holding at a 45 - degree angle can be useful in some setups. However, completely submerging the tip before dispensing is not a recommended standard technique as it can lead to issues like contamination of the pipette tip with the bulk solution in a non - controlled way (e.g., if the solution has particulates or is viscous).

Answer:

Submerge the micropipette tip completely into the solution before dispensing.