Spectrophotometry is a common way To judge the standard of extracted DNA and RNA. Most laboratories have a NanoDrop Microvolume Spectrophotometer (or comparable unit) and they are amazingly user friendly. Pipette 1-twoµl of sample, find “Review�?and the instrument provides a read outside of focus and purity through A260/A280 and A260/A230 https://rna-purification-beads93692.bloggazza.com/29043332/extraction-kit-for-dummies