Wheaton Standard Wide Mouth Bottles are manufactured from clear soda lime glass that conforms to USP Type III requirements. Wide mouth makes bottles ideal for use with dry and viscous samples. Partitioned carton protects bottles from scratches during shipping, and they become useful for storing samples. Each case of bottles also includes a hazardous communication label and tamper evident seal if labeling and / or sealing the bottles is required. Extra screw caps can be purchased separately.