Optional accessory for Benchmark MyBath™ Digital Water Baths Item #B2000-4, B2000-8, and B2000-12. This Test Tube Rack from Benchmark Scientific is designed to hold 40 x 0.5 ml tubes securely in place, providing a convenient storage solution for various laboratory applications. The durable construction ensures stability and organization, making it easy to handle, transport, and store your samples. This rack is compatible with most standard 0.5 ml tubes, offering versatility for different experiments and procedures. Keep your workspace tidy and streamline your workflow with this efficient test tube rack.