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Hydrogen sulfide: Difference between revisions
→Screening: Citations
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* Optional: [[Ascorbic acid]] and distilled water to make a 5% ascorbic acid solution. Mix 2.5 g ascorbic acid into 50 mL water. | * Optional: [[Ascorbic acid]] and distilled water to make a 5% ascorbic acid solution. Mix 2.5 g ascorbic acid into 50 mL water. | ||
'''Procedure:'''<ref name="morewine">[https://www.morebeer.com/images/file.php?file_id=1309 | '''Procedure:'''<ref name="morewine">[https://www.morebeer.com/images/file.php?file_id=1309 Copper sulfate trials.] MoreWine! Accessed April 2020.</ref><ref name="Gardner"/><ref>[https://www.awri.com.au/industry_support/winemaking_resources/sensory_assessment/diagnostic_test/ Diagnostic test for reductive wine characters (Cu/Cd test).] The Australian Wine Research Institute (AWRI). Accessed April 2020.</ref><br /> | ||
# Obtain two 50mL samples of wine in glasses. Label one "Control" and the other "Copper". | # Obtain two 50mL samples of wine in glasses. Label one "Control" and the other "Copper". | ||
# To the glass marked "Copper", add 1 mL of the copper sulfate solution (approx 50 ppm - this is a strong excess of copper), or pennies. | # To the glass marked "Copper", add 1 mL of the copper sulfate solution (approx 50 ppm - this is a strong excess of copper), or pennies. | ||