KIMAX bottle with a cap-style closure that fits over externally ground body. The 7.5 x 15 mm size is suitable for general micro work and as a container for hygroscopic materials where the bottle containing the sample is dropped into the reaction flask. The 40 x 80 size accommodates 1" x 3" micro TLC plates and serves as a micro developing tank. Designed from Federal Specification NNN-B-1493, Type I, Style II requirements.