Membrane filters can be used for final filtration or prefiltration, whereas a depth filter is generally used in clarifying applications where quantitative retention is not required or as a prefilter to prolong the life of a downstream membrane. Membrane and depth filters offer certain advantages and limitations.
Concrete Hard-standing-When using concrete as a surface to support your new shed, you must ensure that it is level, flat and that it is dry in time for your shed delivery and installation. Here are the basic steps: 1  Using pegs and string, mark out the base area (allow 5 cm extra).
The floor of either type of nestbox should be covered with about 3 inches of slightly damp sphagnum moss. The moss should be damp enough so that it is not dusty, but only damp, not wet. Most pythons go through a shed cycle about 30 days before laying time. I usually provide the nestbox after this prelay shed.