Yeast Types

[mickpick]

With the beer kits i've come across HTB, GTB, LEB and X HZB 6G. This is what's written on the foil yeast sachets. Can't see any of these names in the yeast data sheets in the sticky. I just wanted to know their alcohol tolerances, temperature range etc. Anyone have any ideas?

 

[Darcey]

To be honest I normally throw them in the bin.. but I have wondered what the letters actually mean.