You keep adding baking soda to the pickle until it stops foaming up and then it is safe to flush down the toilet. That is, if you are talking about Sparex or something similar.
I heard that the excessive buubling of baking soda when used with
large amounts of acid (say a litre) gives off harmful fumes. I
therefore use garden lime to do the majority of the neutralising,
then baking soda (from a pool suppliers as Water Neutraliser) as an
indicator to check the neutralising is complete.
B r i a n � A d a m J e w e l l e r y E y e w e a r �
@Brian_Adam1 ph/fx +64 9 817 6816 NEW ZEALAND
http://www.adam.co.nz/workshop/ NEXT ONE - Queenstown Mar11 to Mar18 '98
http://www.adam.co.nz/ruthbaird/ across the bench from me