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[ÇóÖú] 43.2 gm 8AP 300 Blume

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hanches: ½ð±Ò+1, µÄÈ·ÒªÉÏÏÂÎĵÄ~ 2013-05-09 12:36:12
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43.2 gm 8AP 300 Ñо¿    ûÓÐÉÏÏÂÎÄ ²Â²»µ½ ÄǸöÊÇɶ
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2Â¥2013-05-08 22:38:18
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chyan1102

½ð³æ (ÕýʽдÊÖ)

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2Â¥: Originally posted by  Äˆ? at 2013-05-08 22:38:18
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43.2 gm 8AP 300 Ñо¿    ûÓÐÉÏÏÂÎÄ ²Â²»µ½ ÄǸöÊÇɶ

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   The most important part of this exhibit is the scattering tube. It is made of plexiglass tubing, 19.5¡¯¡¯ long and 2.5¡± outside diameter with a 1/4'¡¯ wall thickness for strength. Both ends of the tube have plexiglass windows solvent cemented into place and a filling port is drilled into the side of the tube near one end. A 2"i.d. by 2.5"o.d. ring of black paper, at the projector end, prevents light from travelling down the walls of the tube. The tube is vented as illustrated and is filled with 8AP 300 Blume type gelatins. We have had excellent results with the following formula:

  43.2 gm 8AP 300 Blume

  1800 ml Sterile distilled water

  7.5 gm Sodium Benzoate (as a preservative)

First wash anything which will come into contact with the gelatin with a concentrated solution of sodium benzoate. This will sterilize the components and prevent growth of mold (which thrives on gelatin). Mix the ingredients cold and let stand for 15 minutes. Heat in a double boiler to 65 degrees Celsius. Fill and cap the tube.
3Â¥2013-05-08 23:05:43
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hanches: ½ð±Ò+2, àÅ£¬wikiºÜºÃÓÃ~¸ÐлӦÖú~~ 2013-05-09 12:35:31
"8AP 300 Blume type gelatins"ÖУ¬blumeÊDz»ÊÇÓ¦¸ÃÊÇbloom£¬ÊDzâÁ¿Ã÷½ºÇ¿¶ÈµÄÒ»ÖÖµ¥Î»¡£À´×Ôwiki bloom´ÊÌõ£ºThe test determines the weight (in grams) needed by a probe (normally with a diameter of 0.5 inch) to deflect the surface of the gel 4 mm without breaking it. 300 bloomÓ¦¸ÃÊÇÇ¿¶ÈºÜ¸ßµÄÁË¡£

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4Â¥2013-05-09 11:16:11
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chyan1102: ½ð±Ò+10, ¡ï¡ï¡ïºÜÓаïÖú, ÕæÐÄлл£¡Ó¦¸Ã¾ÍÊÇÒ»ÖÖ½ºµÄÐͺŠ2013-05-09 13:14:45
7.5 gm Sodium Benzoate (as a preservative)  7.5¿Ë±½¼×ËáÄÆ£¨Ò»ÖÖ·À¸¯¼Á£©
43.2 gm 8AP 300 Blume  43.2¿Ë  8AP 300Ó¦¸ÃÊÇÒ»ÖÖ½ºµÄÐͺÅ
filled with 8AP 300 Blume type gelatins.
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5Â¥2013-05-09 12:55:46
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