Purple Diamond Testing Services 2710 Lehigh Street Whitehall, PA 18052 Phone: (610) 264-5080 Fax: (610) 264-5083 Email: sales@purple-diamond.com Email Us Purple Diamond Testing Services 2710 Lehigh Street Whitehall, PA 18052 Phone: (610) 264-5080 / Fax: (610) 264-5083