Since I have been using Muriatic acid and Hydrogen peroxide for etching, my tools have started to rust.
I am going to store one or both of the solutions in an air-tight container.
Which solution is causing the problem?
antirust compounds wear off and then those two elements destroy iron. I recommend using lanolin. it will last longest and provides great protection to metal
The acid is the big culprit, I wrap a papertowel tightly around the lid and tape it in place. then for good measure I double bag it, with a toilet paper bag of bicarbonate in the middle bag.
Peroxide is an oxidant as you can see from the air bubbles. Any acid is bad for steel tools. I like to pour vegetable oil on pliers every once in a while to keep the joint from rusting too.
Take care of your tools as you will be lost to your own device if you abuse them or lose them...