I would like to find out what my TCA sensitivity tresshold is (wouldn't you also, by the way)?
I have read that some folk are sensitive to concentrations as low as 1 ng/l (nanogram per liter), or possibly even lower, and that others couldn't detect TCA unless they were swimming in a vat of the stuff.
Wondering where I can get some ready-made TCA solutions of different concentrations in the range found in corked bottles.
Alternative, I guess we can start with, say, a 1000 ng/l solution and dilute it by half, then by half again, etc. I am just concerned that the serial dilution approach increases the error as one goes on, which could be significant if doing it with bad equipment.
While we are at it, would the serial dilution be acceptable if done using a 100 ml volumetric flask and a 200 ml volumetric flask?
I would take 100 ml of concentration X, put it in the 200 ml flask and fill to volume, resulting in 0.5X. Then, take 100 ml of 0.5X, put it in the 200 ml flask and fill it to volume, resulting in 0.25X, etc., etc.
First things first, where can I get a solution of known concentration of TCA (in water and suitable for human sipping and spitting)?
Thanks.
-- ===============================Check out the MiamiWine blog.