Professional Clay PF 500 Peter Meanley 100 KgProfessional Clay PF 500 Peter Meanley Available in 25 Kgs bags. Minimum order 100 Kgs. Peter Meanley has been working with clay for 45 years and making salt glaze vessels for the past 25. In 1999 he was awarded a degree of Ph. D. for his research into the nature of salt glaze. Using Peter's experience combined with Scarva Valentine Clays laboratories we have developed a new salt glaze body which gives excellent fired results. Containing four