WaterChefÂ® Premium Countertop Filter Cartridges. Combining the power of solid carbon block filtration with a unique, proprietary blend of additional filter medias, WaterChefâs innovative Big Blockâ¢ Filtration technology maximizes contaminant reduction and delivers up to 1,000 GALLONS (3,785 L) of freshly filtered water with a single cartridge!
Definition provided by Wikipedia. Student-teacher ratio refers to the number of teachers in a school or university with respect to the number of students who attend the institution. For example, a student teacher ratio of 10:1 indicates that there are 10 students for every one teacher. The term can also be reversed to create a teacher-student ratio.
Expense Ratio. An expense ratio is an annual fee charged to all shareholders of a particular mutual fund. It's expressed as a percentage of assets. For example, if a fund has an expense ratio of 1.1 percent, then $11 of every $1,000 is taken out every year by the fund company to pay for various operating expenses.