Feature: 1. [Foam Tube Rack] Crafted from high density polyethylene foam, this tube rack is soft and lasting, ensuring that your centrifuge tubes remain undamaged and secure during use. 2. [Water Absorption Resistance] The closed cell foam resists water absorption, washable and reusable, providing a cost effective and long lasting solution. 3. [Floating Design] The foam tube holder can float on the surface of water, allowing for effortless retrieval of samples from the bath without sinking, facilitating efficient laboratory work. 4. [Versatile Application] Ideal for use in water baths, tubs, or beakers for floating tubes, this rectangle floating foam tube rack is a practical tool for various scientific experiments. 5. [Practical Laboratory Accessory] Whether for educational laboratory classes or professional research facilities, this foam tube rack serves as a convenient and reliable accessory for handling centrifuge tubes with ease. Specification: Item Type: Foam Tube Rack Material: Foam Use: Used as a storage rack for centrifuge tubes in laboratory water bath pots, to suspend them in water. Package List: 20 x Foam Tube Rack