List four precautions in proper sequence which we observe while preparing a temporary mount of a leaf peel.

The precaution needs to be taken during the preparation procedure of temporary mount of a leaf peel to observe stomata are:

1. Select a healthy leaf, cut the peel in the proper size and avoid folding it.
2. Add 1-2 drops of safranin into the water of the watch glass with the help of a dropper. Do not over a stain or under stain it.
3. Place the peel over the center of the slide and hold it from the edges.
4. Wipeout and clean extra glycerine with the help of blotting paper.