... the concentration of positive specimens, an alternate, non-enzymatic technology such as headspace gas chromatography should be used. Explanation of ... other alcohols such as methyl, propanyl and allyl alcohol would develop the similar color on the reactive pad. However, these ... Vol. 56, 1979, pp 283-286 World of Health Biotech Co.Ltd NO.66 Qianbanbijie,Xinjiekou, Tel: 86 10 66179934 Xicheng,District ...