Why are the 260/280 ratios higher than 2 and DNA concentration is low using QIAgen DNA Stool Mini Kit ?

I'm doing stool DNA extraction using  QIAgen DNA Stool Mini Kit! Most of my result shows 260/280 ratio higher than 2 (between 2-2,5). Besides 260/280 ratio, DNA concentration is also low (around...

08 August 2016 2,925 5 View