Colour Interval Value Publication Food Name Reference
[ 0.03, 0.08 ) 0.03 mg/100 ml Beer, ale McMurrough I., et al (1984) Phenolic acids in beers and worts. Journal of the Institute of Brewing 90:181-187 PubMed (25664918)
[ 0.08, 0.13 ) 0.11 mg/100 ml Beer, ale, British export B McMurrough I., et al (1984) Phenolic acids in beers and worts. Journal of the Institute of Brewing 90:181-187 PubMed (25664918)
[ 0.13, 0.19 ) 0.18 mg/100 ml Beer, ale, British export A McMurrough I., et al (1984) Phenolic acids in beers and worts. Journal of the Institute of Brewing 90:181-187 PubMed (25664918)