Tamper-Evident Specimen Bags. Dimensions: 6 inch W x 10 inch L Gauge: 1.80 mil Color: Purple Quantity: 1000 pack Low Density Polyethylene is an excellent material for flexible packaging used for storage and transport of a variety of items.The extended lip of one side of the bag has an adhesive tape that when folded over on the other side of the bag, effectively closes the bag. Transfer bags assure their contents secure during transport due to the strong adhesive tape tamper-evident closure. The contents in tamper-evident bags are easy to access when needed by the staff because they are designed with an integrated perforated tear line that can easily be torn from the bag at the time of use. Seal top reclosable bags provide outstanding protection, convenience and economy. Designed with strong seals against outside dust and moisture, these storage bags are much stronger than traditional low-density polyethylene bags.