The new 'Small Plant Chamber' (6800-17) for the LI-6800 Portable Photosynthesis System enables measurements of whole Arabidopsis thaliana plants, other small rosettes, or short canopies such as turf in 65 mm (2.5 inch) pots or 38 mm (1.5 inch) Cone-tainers™. The Small Plant Chamber features a transparent Propafilm™ for measurements under ambient light. It is compatible with the Large Light Source, which enables measurements under controlled lighting with any combination of red, green, blue and white light. This lighted configuration is the 6800-17L. Scroll to see picture https://www.licor.com/env/products/photosynthesis/LI-6800/chambers.html Request a Quote https://www.licor.com/env/products/photosynthesis/LI-6800/ordering.html Regards, Rod Madsen