Do you have these bottles, can you confirm that they haven’t been opened. We have no other complaints for this particular lot. We have only had 1 complaint regarding a foreign object in this media since 2006. A contaminated media would have had a pH shift, which we are not seeing. One thought would some plastic shavings from when the bottle was made. If you could please get the information to me, we would also need the bottle that the complaint is about back to Walkersville.