If the specific gravity has a value of greater than one, then the object sinks in water and if it is less than one, then the object floats in water. If the specific gravity has a value equal to one, then the object will neither sink nor float. The specific gravity is a very important factor in different industries.
On average, your mattress should last anywhere between 8 to 10 years. However, there are a lot of elements that can increase or decrease the longevity of your mattress. Your mattress is an investment â the better you take care of it and the more money you put into it will increase the longevity of your mattress.
Good quality premium mattresses used night after night can support and offer a sleeper at least a fair amount comfort up to 10 maybe 12 years. The fact is that after gravity, body weight, and construction materials begin to take its toll in the form of inadequate support and lack of mattress comfort.