Product review (1 stars): Products were not as advertised.
One filter was out of its origianl wrapping and had black powder coming out of it. Wrote the seller that I didn't feel comfortable using the second one because since they were packaged together, any jarring that caused the first one to leak filtration material, the second one got that same jarring and could leak that material into my "filtered" water.  Seller gave me a refund.