2. K2Cr2O7ÀÇ Ç¥ÁØ ¿ë¾×ÀÇ Á¶Á¦
1,000ppm K2Cr2O7 Ç¥ÁØ¿ë¾× 2011³â 9¿ù 23ÀÏ Á¦Á¶ÀÚ : Á¶¿ë¿î |
10 ppm K2Cr2O7Ç¥ÁØ¿ë¾× |
20 ppm K2Cr2O7Ç¥ÁØ¿ë¾× |
30 ppm K2Cr2O7Ç¥ÁØ¿ë¾× |
40 ppm K2Cr2O7Ç¥ÁØ¿ë¾× |
40 ppm K2Cr2O7Ç¥ÁØ¿ë¾× |