The PH of a solution can be measured using the H+ ions concentration present in the solution. PH= -log(H+) H+ is the hydrogen ion concentration. or by knowing the OH- ion concentration. PH= 14- (-log(OH-)-log(OH-) is the pOH of the solution.
If you see a brown patch under the stem it's going to be a little gross inside. If you see a nice yellow-green patch you have a perfectly ripe avocado. Just make sure nobody at the grocery store notices you flicking the stems off a ton of avocados.
Avocado â Reed (A Flowering Variety):Large, round, thick skinned variety with a smooth, green skin and a rich flavour. Reed avocados store well in the fridge once cut. This variety grows to a manageable 4m x 2m, and will bear fruit after 3 years or so. Fruit matures between November and March.