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.
Best Answer: Hey I did too., loved the things.until I read in a health magazine, that after about 7-10 yrs you should replace the mattress because of(hope I don't scare you.) body lice & dust mites. These little boogers love mattresses. They will collect & collect for years. They can stay there forever until you have your mattresses sanitized professionally. You can help by vacuuming with a really good vacuum cleaner, but to get them out good, they need to be done professionally.