Cotinine is detectable in blood for at least several days after exposure to tobacco smoke. Depending on how much you smoke, the level of cotinine in your blood will reflect a nonsmoker level in 7 to 10 days. The nicotine test that offers the longest detection window is a hair follicle nicotine test. These are rarely administered due to their expense, but they do exist.
High pH is NOT always BAD! But, high pH is NOT always GOOD, either! The recommendation that swimming pools should be operated at pH levels between 7.2 and 7.6 is almost universal. This recommendation is enshrined in generations of pool books and literature. It's embedded in many state swimming pool codes. Unfortunately, for most swimming pools, it's also far from ideal.
Best of all, it uses muriatic acid which. is cheap and something that is free air. In a typical pool, the pH is maintained at a recommended level of minimum 7.2 and a maximum of 7.8. with the ideal range of 7.4 to 7.6 (per APSP and many health department guidelines). The total alkalinity. is maintained at minimum 80 ppm to a maximum of 160 ppm with an ideal range of 100 ppm to 140 ppm.