We have added a layer of meltblown polypropylene to our recycled absorbent core to create a sorbent that looks and acts similar to meltblown polypropylene sorbents. Major raw material source comes from our excess shop towel material which creates a more price stable product vs. meltblown polypropylene sorbents. CAUTION: Not intended for use with aggressive acids or caustics. Dispose of all sorbent materials in accordance with local, state and federal regulations.