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.
Mildly abrasive bleach cleanser. Scrub brush or sponge. Towel. Rinse the porcelain tub thoroughly with warm water. Apply a mildly abrasive bleach cleanser to the stains. Allow the product to sit for at least 10 minutes. Clean the tub with a wet scrub brush or sponge, paying special attention to the stained areas. Rinse the bathtub thoroughly. Dry the tub with a towel.