The chemical abnormalities relate to the type of stones that form in the kidneys. These four types of stones and the chemical abnormalities that cause them are: Calcium Stones: people who form this type of stone either have too much of one type of three chemicals in their urine, or not enough of another.
Therefore, we recommend replacing your refrigerator's water filter typically every six months or when the gallon capacity is reached. We offer compatible replacements for Whirlpool refrigerator water filters, Kenmore, Frigidaire, Samsung, LG, Maytag and other popular refrigerator brand water filters.
When you see a recommendation to change your air filter every 4-6 weeks, or every 30 days, or over any other specific time interval, what you're seeing is an estimate of when the filter will start to become clogged. This estimate assumes average use and will take into account the type and size of filter you have in place.