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| Formalin |
Saturday, June 17, 2017
Formalin
Formalin is an aqueous solution of 40% formaldehyde. It is a clear solution which is used especially as a preservative.
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Formalin is an aqueous solution of 40% formaldehyde . It is a clear solution which is used especially as a preservative . Formalin -
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Vinegar is a consisting of about 5-20% acetic acid , water and other trace chemicals which may include flavorings. The acetic acid is prod... -
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nice lecture
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