PLATINUM PEN CO., LTD. 2-5-10,Higashi-Ueno, Taito-ku, Tokyo,　Japan New Colors -Carbon permanent waterproof Bottle Ink for Fountain pen New Colors ; Brun Sepia, Rose Red Ultra fine carbon particles, Water-based Pigment Ink Platinum Pen Co., ltd sells Carbon ink which uses pigment ink in order to improve the water resistance, light fastness. This time Platinum Pen Co., ltd released new colors in the carbon ink series. It is suitable for a dairy and letters since the ink does not fade and blur.. The coloring of it is clear and bright, it also dries quickly thanks to using pigment ink. Moreover once it dries, it does not blur and fade In the experiment by Platinum Pen co.,ltd , the ink is showed that it has excellent light fastness and water resistance. Please refer to the test of examination. .Since the beauty of written letters of the pigment ink is getting popular among writers. In this time Platinum pen co., ltd released new colors in carbon ink series, also Rose red is a gentle and bright color. They hope that writers enjoy various colors. However the quick drying of this ink cause clogging fountain pen feeds if left too long as it contains ultra fine carbon particles To solve this problem, Platinum Pen co., ltd sells Ink cleaner kit. The clogging problem can be resolved by using this kit. . Also it is preferable to use this ink cleaner kit when changing the ink color. #65 Brun Sepia #20 Roes Red INKG-1500  #65 Brun Sepia  #20 Roes Red Bottle Ink / 60cc Use only for fountain pen ※The data of the experiment is by Platinum Pen Co.,Ltd.