FILTERABILITY TESTING - New Pre-Arrival Service Offering
Torresan Estate is now pleased to offer FREE Filterability Testing of all wines prior to dispatch from your winery. This is in addition to the current Filterability Testing that we conduct for all wines on arrival that require sterile filtration.
We are here to help you get a good understanding of the current filterability of your parcel of wine.
In the past, a general <0.6 NTU was considered an OK number to pass through sterile membranes. With experience and research, it appears that the NTU is a good indicator (of how clean is the wine) but isn't sufficient to interpret the filterability of the wine itself. This has been proven many times where we have seen wines <0.6 NTU still blocking our membranes, resulting in us having to backflush the filtration skid or the wine having to be refiltered with a further loss of product.
As it is impossible for us to know every component or wine additive being used of each wine and even less how those are going to react in front of our sterile membranes, we are now using filterability in conjunction with NTU to reduce the risk of blocking filters during bottling. A true representation of what your wine will pass through can only be done with a Filterability Test.
The Filterability Test we are now offering will give us a clearer picture prior to bottling of the behaviour of each of your wines going through our in-line membranes, and reducing the risk of blocking filters during bottling.
It is important to point out that the result of the Filterability Test isn't frozen in time. Wines can and will evolve in a really short period of time. Hence, we insist on having the Filterability Test done as close as possible to the bottling date.
With guidance from filtration specialists and suppliers, our current approach to results and further filtration can be seen on the table below.
Below are two charts indicating a Pass and Fail result from a Filterability Test.
For every test done each client will receive a full report and interpretation of this result.
For all results given out the Torresan team will be happy to discuss all decision making with planned operation of the incoming wines needs.
All we need is one 750ml bottle to conduct the Filterability Test.
We look forward to bottling your wines and are happy to discuss any queries you may have.