All vinegar sold for household consumption can be used.

Sure, but while the pH will not change, the hydrogen and ORP values maybe change after a while.

You can, but we recommend discarding water left in the bottle for longer than one day.

While you don't have to clean your bottle after every use, we do recommend cleaning your i-water bottle at least once a week.

When you open your bottle for the first time, please be sure to rinse the inside of the bottle 2-3 times with clean water.

When you're not using your bottle for a long time, it's best to remove the filter and make sure it's dry before you store it.

The stones in the filter of your bottle will naturally turn dark over time. This is normal and harmless to your health, but it does indicate that you should clean the bottle to maintain good pH levels.

1.) Put 4 tablespoons of vinegar into the bottle and enough water so that the filter is submerged.

2.) Close the lid and shake the bottle more than 5 times, then open the lid and leave it for 2 minutes or until the stones are shiny. ***YOU MUST LEAVE THE CAP OPEN DURING CLEANING, IF YOU DON'T THE INTERNAL PRESSURE CAN DAMAGE THE LID***

3.) When the color of the stones is shiny again, throw out the water and rinse the bottle 2-3 times with clean water.