I would second what Adam has said. There are also chemicals which self neutralize, two excellent solutions are Spitfire Advanced and Up & Out. Both are manufactured by Research Products. You can buy them here in the UK from Cleaners Warehouse. My personal favorite is UP & Out.
Additionally, you can get away with leaving wool at ph 9.5. I know the woolsafe people would have a heart attack even thinking about such a thing but in reality it can be ok. As always test first though.
........ and one more thing for real mingers it is quite often ok to use a high ph prespray like powerburst which is ph 11 then rinse with an acid rinse. I and many others do this all the time with absolutely no problems. Again many would never do this but if in doubt test and that will tell you all you need to know.
