This post is created to help people to find just the ideal water ionizer for their budget and health.
People often spend additional money to ensure they're getting the best water ionizer and then turn around and keep it in such a way, as to get rid of the pH and ORP benefits unnecessarily.
The Incorrect Storage of Ionized Water Wastes Money and Affect Health

People often try various possible ways of keeping ionized water [vinyl, stainless steel] and different types of shapes, designs, and sizes of the water container. However, the very best ionized water containers we have found are a unique vacuum-sealed, stainless, jars.
Some people believe that a simple mason jar is best, but there are issues with structure, breakage and the lid-rusting that can make them look for another alternative. The stainless-vacuum sealed jars come in two designs, narrow-top and wide-mouth.
In this post, we have explained some of the great storage containers for ionized water.
Vacuum-Sealed, Stainless Sports Bottles:

Double-walled, food grade, high-quality stainless game bottles are the excellent storage containers for ionized water! Just fill them into the inner "lip," screw on the lid and go! Hours later you can open and drink excellent, refreshing ionized water where the pH and ORP are maintained perfectly!
Additionally, compliments of Alkaline Water Plus, for a limited time with each electric water ionizer order you have the opportunity to get a free sports bottle [color of your choice] to try!
The principles of this vacuum-sealed bottle and Mason jar are same. Remove the air from the storage section, and you'll get better preservation of the pH and ORP.
The vacuum bottle removes the air by entering a nipple-topped, sealed lid to the neck of the jar.
The Other Great Way of Storing Ionized Water is using Mason Jars:

You will find a dozen mason jars at a price $10/dozen in any shop with a housewares section, and it would work just fine to set the mason jars in a bag to bring to work with you.
The Mason jar removes it using the 2-part lid. Once the flat cap goes on, it is sealed inside, and readily no air gets in.
The best way to fill the mason jars would be to over-fill them and carefully cap them in such a way as to attempt to get no air bubble.
Why Cannot Plastic Work?

Plastic is not preferable for a couple of reasons. Although, if it's BPA-free, it still contains chemicals which probably leach into the water. However, another thing is the fact that no matter chemical leaching, plastic is porous and cannot retain pH and ORP well.
If you have to use plastic, then choose a food-grade plastic that's thick instead of thin. In any event, however, it will not come close to being able to store ionized water in addition to the above: stainless or glass materials.
Storing for Many Hours and Even Many Days with Mason Jars

You can easily do testing with keeping ionized water using mason jars. You will see that after a few days, the Mason jars has maintained the ionized water's ORP and pH in desired ranges. The pH and ORP have dropped, but might be still good and healthy water to drink.
Mason jars are created for preserving things, so it does make sense they're great for storing water!