vaginal fluid BTO:0003084 BrendaTissueOBO The lubrication fluid contains water, pyridine, squalene, urea, acetic acid, lactic acid, complex alcohols and glycols, ketones, and aldehydes. The fluid is typically clear and more resembling of male pre-ejaculate than male ejaculate. The normal pH of vaginal fluid is between 3.8 and 4.5, whereas male semen is typically between 7.1 and 8. lubrication fluid cervicovaginal fluid