Study on the efficiency of the extraction of compounds from guava to replace new ink pens from natural chemicals. Because there are currently using the ink from the chemicals. The chemicals used are harmful to your health because it contains all the ingredients of synthetic pigments and organic solvent. These chemicals may destroy the endometrial nose when inhale air with pollution and makes for very long. Therefore, it is an idea that will bring the colors from natural substances proven alternative national ink made from chemical to natural color by the existing close and dangerous. Study of the extraction of the substance, so instead of Orseolo from guava. I found that from extraction with acetone concentration 60 percent and 80 percent ethyl alcohol in the ratio 1:1 volume of 180 ml. extracts of green from the appropriate quantity to extract colors from natural plants that exist in the locality. It was found that the chewing gum 10 g periods 3 days using an extraction done, each with acetone and ethyl alcohol 90 ml volume, volume 90 ml Ink from natural substances proven to be the most suitable. Study on the appropriate approach to take ink from natural substances proven good use, it was found that when put to the test on paper. The color of the ink color and nature can not be deleted. In the use of synthetic chemicals by the pen out changes to stick cotton instead of from the evaluation of customer satisfaction in order to use ink from natural substances proven national. A lot of satisfaction level
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