Product review (3 stars): Seems to do the job, but the price and not knowing if it is really expired begs some questions
To be honest, I am not a chemist.  Nor have I submitted a 'before and after' sample to a lab for analysis.  As far as we can tell, it is doing its job.  But the price of this filter for the short period of time it works is shockingly high!  Our Samsung refrigerator has an indicator that comes on based on time installed OR degree of clogging from filtering.  So far the filter has never been clogged.  In fact, we wonder if the filtering is actually 'used up' --- in other words, if it could go longer before being replaced.  Other than the cost, and wondering if its efficiency is really expired, it is easy to install.  I gave it a "3" because of price and because you don't know if it was really used up and wonder if we are therefore wasting money and resources.