2 oz (60 ml) Natural polypropylene jar with 53-400 white polypropylene unlined cap attached. Natural polypropylene jars are translucent and durable. Jars are ideal for storing and collecting specimens and lab supplies. Wide neck and straight sides facilitate easy recovery of contents. Polypropylene offers greater tolerance to high temperatures than HDPE and better contact clarity. Attached unlined white polypropylene caps are known for good impact strength, cost effectiveness, and pliability.