SAN JOSE, CA - Imerys Filtration Minerals Inc. will raise prices for products shipped within North America effective July 1, 2013. The increase will range from 2 to 8 percent, subject to any provisions in individual contracts. The price increase supports continuing investments and rising costs in manufacturing, maintenance, quality systems and environmental compliance. The price increases will apply across all diatomite, perlite, cellulose and silicate products. The energy surcharge will remain in effect.