10-04-2011, 01:00 PM   #191
ajdelange
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Aug 2010
McLean/Ogden, Virginia/Quebec
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Most lactic acid solutions are 88% w/w. One mL of an 88% solution has a weight of 1.3 g and so contains 0.88*1.3 = 1.14 grams of the acid

03-28-2012, 11:00 PM   #192
whiskeyjack
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Jan 2011
quincy, il
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Ty for the water spreadsheet, after watching bobby_m on youtube it seems ez
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04-01-2012, 02:43 AM   #193
anicola
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May 2011
Bay Point, Ca
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Quote:
 Originally Posted by ajdelange Most lactic acid solutions are 88% w/w. One mL of an 88% solution has a weight of 1.3 g and so contains 0.88*1.3 = 1.14 grams of the acid
Wouldn't 1ml of an 88% solution contain .88g of the solute? If I remember my high school chemistry ( 1965- a long time ago) , to make 100ml of an 88% solution we would weigh 88g of solute and dissolve in enough distilled water to make 100ml.

04-01-2012, 04:01 AM   #194
ajdelange
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Aug 2010
McLean/Ogden, Virginia/Quebec
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To make an 88% w/w solution you would put 88 grams of lactic acid in a beaker and add 12 grams of DI water. This would give you 100/1.3 mL of solution.

04-01-2012, 05:13 AM   #195
anicola
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May 2011
Bay Point, Ca
Posts: 60
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Right U R! Lactic Acid 88% is w/w not w/v. Thanks for the heads up. Now I need to recalc my Ascorbic acid dihydrate grams to Lactic Acid 88% mils equivalency