hat
Koulè rann reyaksyon 1 Pran 0.2ml nan solisyon tès anba detèminasyon an kontni, ajoute dlo 2ml, ak Lè sa a, ajoute Hydroquinone solisyon an asid idroklorik (hydroquinone 0.2g, ajoute dlo 10ml fonn, ajoute idroklorik asid 90ml, ajoute 0.1mol / L solisyon Copper silfat 0.25ml, frijidè Preservation) 2ml, beny dlo chofaj pou minit 15, solisyon ble ak vyolèt, ak Ne alkòl 5ml ekstraksyon Vibwasyon, kouch alkòl ne se ble.
eng
Color rendering reaction 1 Take the test solution 0.2ml under the content determination, add water 2ml, and then add the Hydroquinone hydrochloric acid solution (hydroquinone 0.2g, add water 10ml dissolved, add hydrochloric acid 90ml, add 0.1mol/L Copper sulfate solution 0.25ml, refrigerator Preservation) 2ml, water bath heating for 15 minutes, solution blue and purple, with N-e alcohol 5ml Vibration extraction, n-e alcohol layer is blue.