Preventing Silver Nitrate stains on your skin

Here is a neat trick :::
  1 - Dissolve 2 teaspoons of common table salt in 1 Cup of warm water.
  2 - Place this Salt solution close by where you will be working with Silver Nitrate solutions.
Then, if you spill Silver Nitrate solution on your skin, do this:
  1 - Stop what you are doing.
  2 - Rub the Salt solution completely onto your skin, where you think the Silver Nitrate spilled.
  3 - Rub HARD, get the Salt solution as deeply into your skin as you can. You can use a paper towel.
  4 - Work quickly - you have about 10 seconds!
  5 - After a minute or so, rinse off the Salt solution in plain tap water.   If you do this promptly, the Silver Nitrate will convert to Silver Chloride,  and your skin will not darken when you later go out into the sunlight!