Lyme disease is diagnosed clinically based on symptoms, objective physical findings (such as EM, facial palsy, or arthritis), or a history of possible exposure to infected ticks, as well as serological blood tests. The EM rash is not always a bull's eye, i.e., it can be solid red.
Rule of Thumb for Changing Filters. The rule we have followed for 18 years in the filtration industry is to change filters every 6 to 12 months. Six months is almost always optimum, especially in commercial/office settings, and twelve months is as long as you want to go no matter what.
Sometimes chemicals are also used to clean the water. These chemicals remove certain contaminants from your water and are not harmful. You will need to change your filters about every 3-6 months. This will depend on your refrigerator's brand, model, and your home's water usage.Most refrigerators have a light indicator that will turn on when you need to change your water filter.imilar to the WF271 inline filter, the WF283 uses a super compacted activated carbon media that filters to 5 microns. There is 150% more carbon media in a WF283 than a standard 10 water filter. This combined with a push in .250 inch connection makes high quality inline refrigerator filter your best choice.