200ppm is crazy high for cold side.
A slow purge from the bottom with the output going into water, will be much more efficient.
In the beer yes. That's 200ppm in a 1L volume of gas.. Dump that with dry hops into a 7gal fermenter and you've suddenly reduced your ppm by a factor of 26 to about 7ppm
And I also said within 1 hour, if you leave the device on longer the PPM can go down below 100.
Also assuming your CO2 is 99.9% pure (typical for most homebrewers) that means it's 0.1% air, which is 1000ppm, and 20% of that is oxygen which is 200 ppm anyway.