DescriptionThis is a frozen test tube, mainly made of lightweight and durable PP materials, safe and gentle, strong and freeze-resistant, and can serve you well. Reasonable design, excellent workmanship, reasonable structure and volume, can better help you collect liquid for sample storage. This is a very good freezing tube, and it will be your good choice of sampling tube.Features-Material: PP-Note: The capacity is 5 ml. -Mainly made of PP materials. Lightweight and durable, mild antifreeze. -With a test tube cover, it is safer and more convenient, and it will be your good choice. -With a reasonable structure and volume, it can better help you collect liquids for sample storage. -Transparent and gentle, smooth and durable, it can serve you well. -It is made with excellent craftsmanship and has excellent airtightness, so you can use it with confidence.