There are many brands of spectrophotometers (and infrequently calibrated) in use across laboratories, departments and institutions, each with varying degrees of accurate capabilities in reading small quantities of precious samples. We strictly rely on our Facility’s NanoDrop ND-1000 spectrophotometer when assessing the quantity/concentration levels of all user supplied samples. Our calibrated ND-1000 enables a uniform method for highly accurate analyses of extremely small samples with remarkable reproducibility.