Types of trees according to the duration of the leaves. Picture of a pine tree with an evergreen needle-shaped leaf. There are approximately 60.000 o 70.000 species of trees. They can be sorted by numerous criteria, from their use in gardening until the value of its timber. However, the two main criteria which are usually taken into account are the duration of the leaves and the type of flowers they produce.
July 27, 2010. 1  Brita water filters clean and sanitize drinking water. 2  Remove the filter cartridge. 3  Add six to eight drops of bleach to one gallon of water in the sink or a large bowl.  Fill your sink with enough fresh tap water to submerse the entire filter 1  cartridge. Fill the pitcher with water.
Step 5. TURN PUMP ON AND BACKWASH-Turn the Pump back on and backwash for 2-3 minutes to strip the old DE Powder and contaminates off the filter grids. The flow of water during a Backwash cycle is reversed from that of the Filter cycle and dirty water and old DE Powder is washed out the waste line.URN PUMP ON AND RINSE-Switch the pump back on for 30 seconds or so to rinse the grids from the normal Filter side of the grids. In this mode, water flow is switch back to flow in the same direction as it would in the Filter mode, except the water and any remaining residue is purged out the waste line.