The process is called sublimation. Solids can turn directly into gases, and gases can turn directly into solid without ever being a liquid. Carbon dioxide (dry ice) is a commo â¦ n example of this. Other examples are mothballs, solid air fresheners (Air Wick), and iodine.
When you start itching from chlorine, get out of the pool and limit your exposure to the chemical. Chlorine-related rash and itching typically subsides within two to four weeks. Hydrocortisone creams help relieve the itchiness.
The conservative rule is to test after an hour, but in a pool with good circulation most of the chlorine is disbursed in around 10 minutes and the chlorine level doesn't change after around 20 minutes. I've done this sort of test in my own 16,000 gallon pool with 3 returns, one skimmer and two floor drains.