| CPC G01N 33/14 (2013.01) [B67D 7/08 (2013.01); G01N 1/2226 (2013.01); G01N 2001/2229 (2013.01)] | 20 Claims |

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1. A method for monitoring a container treatment installation which has a filling apparatus for filling containers and a closure apparatus for closing containers, wherein the closure apparatus is arranged downstream of the filling apparatus, the method comprising:
filling a container with a filling material using the filling apparatus;
measuring a concentration of a gas in the filling material of the filled container using a measuring device, wherein the filled container is removed in order to measure the concentration upstream of the closure apparatus or the concentration is measured upstream of the closure apparatus.
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