I have used the white filters for a year and this time I apparently ordered the dark gray filters. I am not sure why I received the gray ones. There were no instructions with them so I tried to rinse this one like I remember the instructions with the coffee maker recommended. It appears water proof. I will soak it over night and see if that works. It appears that to get the white filter, one has to buy the framework with every one. What a waste! Why don't the sellers give us some information about their products?

I am old and most of my taste buds have died so I am not sure the filter makes any difference, anyway.