Aquasana Replacement Filter Cartridges for Aquasana Clean Water Bottle, 2-pack 2-pack of replacement filters for Aquasana Clean Water Bottle: AQ-CWB or AQ-PBM Easy Replacements - simply soak your new filter for 5 minute in tap water and replace the old cartridge Instant Access - transforms 20 oz. of ordinary tap water into delicious professional grade filtered water Removes over 99% of harmful contaminants like bacteria, lead, chlorine, cryptosporidium, and giardia from any tap water Retains the healthy, beneficial minerals that other filters remove like calcium, potassium, and magnesium BPA Free - your filter cartridge is safe and non-toxic - no more need to buy bottled water