Benzenes, Xylenes and Toluenes Revision of BS standards

Revisions of the 1963 editions of BS 135, BS 458 and BS 805 have just been issued as one volume, entitled BS 135, 458 and 805 Benzene, xylenes and toluenes. The main feature, apart from the new single volume arrangment, is the reduction in the numbers of grades for each product from 5, 7 and 5 respectively, to 1, 3 and 3. The assembly of the revisions into one volume, with common appendices will be more convenient for most users.