I am trying to decide on what filter sizes to use for bottling our whisky (aged for 3 years and we are using non chill filtration). Apologies for another post on this topic as I have seen quite a few on here but they haven't really answered my question.
From literature and posts here I see that a common filter pore size is around 1 micron, with many of you using 5 micron and then 0.5 micron.
I spoke to a filtration company who have lots of experience with this type of work and they informed me that small changes in the filter size (eg 1 micron to 1.2 micron) can make significant changes to colour and taste of whisky. As a result the best thing to do would be to send a sample and they would test different filter sizes and send back finished product from different filter sizes to us. This saves using the wrong filter size for our bottling and potentially harming our product.
Does anyone have any input or experience with testing filter sizes before committing to a full bottling run? My worries of not doing this is ending up with a whisky which will haze or go cloudy in time from a filter too large or a whisky which has had some of its hard earned taste removed at the final step.
If testing is the correct way how do we then deal with bottling of whisky from different ages and different casks etc in the future? - it seems excessive.
If anyone has any thoughts/input on anything relevant then please let me know!
Thanks
