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.
Typical Ratios. A management to staff ratio is calculated by dividing the number of managers in a company or department by the number of employees working in it. Typical staffing ratios range from 4-to-1 for direct reports to a regional vice president or senior manager, to 20-to-1 in an administrative area.For most areas, approximately 10 workers per manager is common. Span of control is a big determinant, even within the same department.ypical staffing ratios range from 4-to-1 for direct reports to a regional vice president or senior manager, to 20-to-1 in an administrative area. For most areas, approximately 10 workers per manager is common. Span of control is a big determinant, even within the same department.