"Absorbent and yellow* and porous is he…"
The Wonder Sponge: And We are Not Talking about SpongeBob SquarePants
A popular tool in our St. Louis Paper Lab for cleaning mold from records is our foamed natural rubber sponge erasers. Every work station has a pile of them! These soft erasers do wonders in cleaning mold from the paper’s surface. The erasers come in “brick” sizes and are easily trimmed down into smaller pieces which are held more easily in your hand. But an important word of caution! Although softer than hard erasers these can still be abrasive, and can cause damage if used on paper surfaces that are soft and friable due to more extensive damage.
(*Ok, so the Wonder Sponge is really more off-white than yellow.)