Abstract
Science Project education pen ink stain removal efficiency of j from pineapple juice to 1) to study the properties of the pen ink stain removal stain juice with pulp from j-lakamchat. Pineapple juice in the ratio by j from the process of with pineapple juice. As follows: Take slice pineapple into pieces and then barked a little. Filter through some white cloth to remove only the best pineapple juice, finely chopped 250 200 150 100 volume pineapple juice and 300. And, the heat that is 100 degrees Celsius, the volume decreases until the remaining 50 cubic centimeters. Fill the N70 and klisoerin Each 5 cubic-centimeters. Fill the salt down to 5 grams per person, with soft lights, all the ingredients melted together as well. Then test the ability to get rid of pen ink stains of j from pineapple juice by scribble ink onto the surface of the table and the white cotton fabric with the same type of ink. The same diameter all 8 lines, bringing all the lasapparot j 5 concentration, Pineapple juice, N70 and klisoerin A 5 cm cubes shall. Apply cotton ball dampened with 8 and then gel rub on the same amount of ink 5 times. Study results showed that klisoerin and pen ink stains cannot be rid of N70. And pen ink stain removal product that can be better: j from pineapple juice pineapple juice volume 300 cubic centimeters, possibly because of the difference of pineapple juice so it has a different performance.
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