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SPF 290S Analyzer ´Â ±âº»ÀûÀ¸·Î ž籤¼±ÀÇ UV Â÷´ÜÀ» À§ÇÑ Suncream Á¦Ç°ÀÇ Åõ°úµµ(Transmittance) À» ÃøÁ¤ÇÔÀ¸·Î¼ In vitro ÃøÁ¤(in vivoÀÇ °æ¿ì¿¡´Â ½Ã°£°ú ºñ¿ëÀÌ ¸¹ÀÌ µé±â ¶§¹®)À» À§ÇØ °í¾ÈµÇ¾ú´Ù(±×¸² 1).
ÀϹÝÀûÀ¸·Î Åõ°úµµ´Â ±¤¿ø¿¡¼ ³ª¿Â Ãѱ¤·® (I
0)Áß¿¡ ½Ã·á¸¦ Åë°úÇÑ ±¤·®ÀÇ ÇÕ(I)¿¡ ÀÇÇØ ¾ò¾îÁø´Ù.
T = I / I0
2)ÃøÁ¤ ½Ã º¯¼ö
¨ç Èí±¤»ó¼ö [the sample absorption coefficient]
¨è ½Ã·áÀÇ µÎ²² [the sample pathlength (thickness)]
¨é ½Ã·á³óµµ [the sample concentration] µî 3°¡Áö ÀÎÀÚ¿¡ ÀÇÇØ ¿µÇâÀ» ¹Þ´Â´Ù.
* ½ÇÇèÀÇ ¿ÀÂ÷¸¦ ÃÖ¼ÒÈÇϱâ À§ÇÏ¿© º» ½Ã·á ÃøÁ¤ Àü reference scan(ÃøÁ¤½Ã ±âÁØÀÌ µÇ´Â °ª)À» ÃøÁ¤.
3)reference scan ÃøÁ¤
¨ç 0.2gÀ» °í¸£°Ô µµÆ÷ÇÏ¿© Standard ÃøÁ¤[reference scan] - 8% Homosalate USFDA
Standard SPF 4 [Optometrics Lot Code #11]
¨è ±â°è¸¦ ÀÌ¿ëÇÏ¿© ½Ã·áÀÇ ÃøÁ¤
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1> WinSPF Software for SPF(Sun Protection Facror) 290S Analyzer
4)¾Æµ¥³ë½Å BB CreamÀÇ ÃøÁ¤
¨ç ¾Æµ¥³ë½Å BB Cream 0.2g +Oil 0.2g ·Î Èñ¼®
; ÃøÁ¤ÇÏ°íÀÚ ÇÏ´Â ½Ã·áÀÇ Á¡µµ°¡ ³Ê¹« ³ôÀ¸¸é ÃøÁ¤ ½Ã »ç¿ëµÇ´Â ÆòÆÇ¿¡ °í¸£°Ô ºÐÆ÷ µÇÁö ¾Ê±â ¶§¹®¿¡ Á¶±Ý ´õ Á¤È®ÇÑ ÃøÁ¤ °á°ú¸¦ À§ÇÏ¿© Èí±¤µµ¿¡ ¿µÇâÀ» ¹ÌÄ¡Áö ¾Ê´Â OilÀ» ¼±Á¤ÇÏ¿© ³óµµ¸¦ ³·Ãá ÈÄ µµÆ÷ ÇÔ.
¨è ½Ã·áÀÇ µµÆ÷ 0.4g (ÃÖÁ¾ÀûÀÎ ½Ã·áÀÇ ¾çÀº 0.2g À¸·Î standard¹°Áú°ú µ¿ÀÏ ¾ç)
¨é ±â°è¸¦ ÀÌ¿ëÇÏ¿© ½Ã·áÀÇ ÃøÁ¤
5)¼ö½Ã·Î »Ñ¸®´Â ½ã½ºÇÁ·¹ÀÌÀÇ ÃøÁ¤
¨ç ½ã ½ºÇÁ·¹ÀÌ 0.1g + Glycerin 0.1g ·Î ¼¯À½; ÃøÁ¤ÇÏ°íÀÚ ÇÏ´Â ½Ã·áÀÎ ¼ö½Ã·Î »Ñ¸®´Â ½ã ½ºÇÁ·¹ÀÌÀÇ Á¡µµ°¡ ³Ê¹« ³·¾Æ °í¸£°Ô ºÐÆ÷Çϱ⠾î·Æ±â ¶§¹®¿¡ Èí±¤µµ¿¡ ¿µÇâÀ» ¹ÌÄ¡Áö ¾ÊÀ» ¼ö ÀÖ´Â GlycerinÀ» ÀÌ¿ëÇÏ¿© ½Ã·áÀÇ Á¡µµ¸¦ »ó½Â ½ÃŲ ÈÄ µµÆ÷ÇÔ.
¨è ½Ã·áÀÇ µµÆ÷ 0.2g (ÃÖÁ¾ÀûÀÎ ½Ã·áÀÇ ¾çÀº 0.1g) * ÀÌÈÄ, SPF °ª °úÁ¤¿¡¼ 2¹èÀÇ °ªÀ» ÃëÇÔ
¨é ±â°è¸¦ ÀÌ¿ëÇÏ¿© ½Ã·áÀÇ ÃøÁ¤
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