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.
Steps. 1  1. Fill your bathtub with warm water and soap. 2  2. Lay out a towel on the bottom of the bathtub, under the water to avoid scratching. 3  3. Take off the mouthpiece and set it aside.  4. Flush out your 1  trumpet. 5. Take out all of the slides, and put them in the bathtub.  6. Take out all 3 valves.