Standard Ii Zymobiomics 220 Ng / 20 Ul^ ZymoBIOMICS Microbial Community DNA Standard II (Log Distribution), Purity: Contains 0.01% foreign microbial DNA, Sample source: Eight bacteria (3 Gram-negative and 5 Gram-positive) and 2 yeasts, Accurate composition, Microbiomics QC, Size: 220ng / 20ul