Review on pH On-The-Go Portable Water Filter System - Alkaline Water Filter Pouch for Bottles, Jugs, Pitchers - High pH Ionized, Pure Drinking Water - 98 liters / 26 Gallons - 3 Pack - Optimized Water Filter for Improved pH Levels, Alkaline Ionized Water - Portable Filter for Bottles, Jugs, and Pitchers - Long-lasting Supply of Pure Drinking Water - 98 liters / 26 Gallons - 3 Pack by Ashley Grant

I bought them in April and am still using the same packaging in August. I test my water with a digital pH meter before adding it to a storage container or bottle on the go. I also used a digital TDS meter to make sure the water contained alkalizing scale. I'll start with Deer Park spring water; usually it tests around 8.3. First I let the water sit long enough to alkalize despite the misleading directions. When bags are new, they work fastest. They last longer over time but definitely work. I use all three sachets in three different bottles to maximize my alkaline water supply. The smaller the bottle, the faster the water becomes alkaline. I use 16 oz, 24 oz and 32 oz. Bottle. Right now I only drink alkaline water when it comes from home because these packages make it inexpensive. I consume about 100 ounces a day based on my height and activity level. Good estimate (your body weight / 2 = ounces per day). Every morning I check each bottle after leaving them overnight. I pour the water out of the pouch bottles, pour it into my pitcher and refill the pouch bottles to give them time to alkalize. Water averaged around 9.5, sometimes more or less. I leave it there if it's less than 9.0, that's my personal choice. Check it every time with a digital meter and don't rush them. This saves you money if you're really interested in drinking alkaline water and keeping costs down. I recommend pH On-The-Go alkaline water packs. Take your time and you won't regret your purchase. These works, period.