ASTM International’s recovered carbon black (rCB) committee (D36) is developing a proposed standard that will guide users of rCB on how long the material can be stored and the effect that prolonged storage might have on rCB. Recovered carbon black, material made from the remains of end-of-life tires, has applications in the tire, rubber goods, plastics, and pigment industries. According to ASTM member Joe Hallett, the purpose of the proposed standard (WK73460) will be to provide a bett...