Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The flow-through system. Arrows indicate the direction of water flow. (a) Thermostat; (b) 20-liter water reservoir maintained at 30 °C; (c) gas-diffusing stones; (d) stirrer (teflon-coated magnetic bars); (e) heater; (f) sealed anoxic aquarium maintained at 13.6 °C; (g) coil for cooling of inflow water; (h) rotating magnet driving the stirrers; (i) N2 (99.96%) and CO2 (0.04%) gas mix tank; (j) air tank; (k) peristaltic pump; (l) sediment; (m) aerated aquarium.
