Hi, Jo -
I know that the stomach is very acidic - 2 (on a scale of 0-10), while different sections of the small intestine (3 sections) are all more alkaline than blood. If I recall, one section is actually up to 8 (blood being 7.25 - 7.35).
I'll do some research and get back to you.
Can't stand working without a mouse!! lol
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