The master level mirrors the IMP. The intermediate level is usually found in the proposal and contains all the end-to-. end activities, but at the âmacroâ level. The detailed IMS is usually a rolling wave planned at the week level.
Instructions. 1  Baking soda Baking soda is the best household item you can use to get the accumulated gunk off your old bathtub. 2  Mix two parts of baking soda and one part of hydrogen peroxide in a small glass bowl. 3  Apply this paste on your enameled bathtub or sink and let it set for about 30 minutes.nstructions. 1  Baking soda Baking soda is the best household item you can use to get the accumulated gunk off your old bathtub. 2  Mix two parts of baking soda and one part of hydrogen peroxide in a small glass bowl. 3  Apply this paste on your enameled bathtub or sink and let it set for about 30 minutes.
1 Porcelain. 2  This material is stone-like and the most durable for bathtubs and sinks. 3  Enamel.This is common in older tubs and is very sensitive to drain cleaner and bleach. 4  Brown, rust-like stains instantly appear when the tub is exposed to bleach or a strong acid.lean very tough stains with a pumice stone. This is recommended for tougher stains when scrubbing. 1  Be sure your tub is porcelain when using a pumice stone. 2  Acrylic and enamel bathtubs should NOT have pumice stone applied to them. 3  It will mar the surface with scratches.