Specifications include, but are not limited to:This specification covers glass spheres for application on water borne traffic paint markings to produce retro reflective pavement markings.The glass spheres shall be transparent, colorless and free from milkiness, dark particles or carbon residues, excessive air inclusions, and essentially clear from surface scaring or scratching The 50 pounds bags of beads spheres shall be packaged in moisture resistant, multi-wall, Kraft bags. The bag shall consist of a minimum of five (5) walls of heavy-duty shipping sack, Kraft paper. Upon approval by the IA DOT, other equally effective bags of different construction maybe used. The manufacturer's name, the lot or batch number, and the contents shall be plainly stamped on the face of each bag. The vendor shall not use bags originally marked for another product. Adhesive sticker labels are not acceptable. Palletized cardboard totes shall be of adequate strength for proper shipping