I made a beer from extract (amber dryed malt extract). Recipe says OG is 1.040 FG is 1.010. Used Safebrew S-04 (english ale yeast). The wort has been sitting in primary fermenter for 10 days now. First days I had a lot of bubbles. Now a small bubble every 2-5 minutes or so. This seems to happen more when there are room temperature variations or vibrations. I do not have hidrometer to test FG.
Can I bottle? Generally speaking what airlock activity is acceptable for bottling?