Testing Pectin haze

[Jason MacArthur]

To test a slightly hazy cider to see if it contains pectin, the standard procedure is to add methylated spirits to a sample and observe.  Since it is the presence of alcohol which causes the pectins to clump, could I not use vodka or grain alcohol in place of the methylated spirits to perform this test?

  Since I have these on hand that sure seems easier to me, but I suppose they might contain other ingredients which could create misleading results.  

  

Jason

[Andrew Lea]

The main ingredient they will contain is water. What you really need is
as close to 100% alcohol as possible to make the test as sensitive as
possible. Vodka at 40% alcohol is unlikely to be so effective.

Andrew


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