Durable construction Container is made with sturdy paper and plastic materials. The storage box is strong, safe, and resistant to deformation, providing a reliable microcentrifuge tube storage holder. Freezer and lab storage compatibility Microcentrifuge tube storage holder for freezer use. The paper freezing tube box is suitable for freezing storage experiments and serves as a practical storage holder for cold environments. Cryogenic and efficiency features Cryogenic holder with a user friendly design that simplifies the storage process, saving time and effort for quick access to tubes. Organized sample management Testing tube holder with delicate workmanship and a practical design. Easy to identify and locate specific samples, making the centrifuge tubes holder dependable for routine organization. Use scenarios - Store standard microcentrifuge tubes in freezer or cryogenic environments during freezing storage experiments. - Organize samples during preparation and retrieval to improve workflow and reduce handling time. - Use for long term sample storage in cryogenic conditions with quick visual identification of tubes.