NAPCO's Red Infectious Waste Liners are guaranteed to provide film impact resistance greater than 165 grams and film tear strength greater than 480 grams when tested in accordance with ASTM D-1922-94a and ASTM D-1709-97. All film colorants are non-metallic. The liners are printed with a six inch diameter Biohazard Symbol and warning message in English and Spanish. All printing is in black ink, one side, random repeat. The liners are supplied with a STAR SEAL bottom and are packed in rugged white corrugated cartons.