833 is Ayingers bottle conditioning strain and as such is a poor flocc'r.
How do you know that?
I drink beer and know stuff!
Do you know the history of 833?
In Ypsilanti MI there is a brewery supplier named GW Kent, which has the import rights to Durst Malz. Herr Durst would visit, and back in the day got to know the brewpub owners in Ann Arbor, Arbor Brewing. He gave them the lager yeast we know as 833. Jeff Renner got it,and homebrewed with it. He sent it to White Labs, and they cleaned it up, and marketed it.
Now without DNA testing we don't know, do we. Where did Herr Durst get it? If you have Jahrhundert from the tanks, there is yeast in it. If one is around a certain part of a brewery, yeast can be "requisitioned".
As an aside, a brewer here in MI tells a story from years back, when he toured a brewery in Germany with open fermenters. One guy on the trip was from Stroh's lab, and said "do you want some yeast". The guy pulled out a handkerchief, stuck a finger into the krausen, and wiped it on the handkerchief. Back in the states sometime later, the guy said "I got some yeast for you". The cells on the handkerchief survived and were cleaned up and cultured up in the lab.
I told that last part as the new brewery with unitanks was built in 1999. Arbor opened in 1995. So did the yeast come from open fermenters in the old brewery? Like I said, DNA testing would tell the true answer.
The owners also got a vintage Daimler-Benz fire truck from Herr Durst. It has been cleaned up, is road worthy, and has taps coming out the side for service at beer festivals. Note the front license plate, DURST 1.
http://discussions.realbeer.com/showthread.php?22742-Mercedes-Benz-fire-truck-waits-to-catch-the-draft-at-Ypsilanti-s-Corner-Brewery