A hollow tube with some culture medium is placed in semi-solid agar inside a bottle. A sample of the bacterium to be tested is inoculated into the medium in the hollow tube and the setup is incubated at 37 °C overnight.
Cragie tube
Laryngeal tube
Combitube
Sengstaken–Blakemore tube
Electrolarynx
Bogota bag
Tympanostomy tube
Bonanno catheter