To eliminate undesirable inscription with paper, place it under a clean sheet and treat specially prepared mixture. Take 1 teaspoon of 70% acetic concentrate and thoroughly mix it with a small amount of potassium permanganate (on the tip of a knife) to obtain a dark purple liquid. For applying the solution is better to use a small brush with fine and thin hair. Soak it in the resulting composition and spend it on paper until, until the label disappears. To remove the record from the ballpoint pen with a thick paper instead of a brush it is advisable to use cotton ear sticks. Upon completion of the work the trace of the ink will become brown. From this it is easy to remove with a cotton swab, processed in hydrogen peroxide. Then smooth the sheet with a warm iron using a light and a clean cloth.
Use a solution of oxalic and citric acid, taken at 10 g with 100 ml of water. Moisten received by means of the inscription with a brush several times, and after the same brush and treat the traces from the paste with plain water. Then the paper should be dried.
Prepare a composition of 10 g hydrochloric acid, 10 g of salt and 30 ml of water. This solution use as well as everyone else.