4
Measure Microarray
34
NanoDrop One User Guide
Thermo Scientific
Related Topics
• Calculations for Nucleic Acid Measurements
Sample Pathlength
• For micro-volume measurements, the software selects the optimal
pathlength (between 1.0 mm and 0.03 mm) based on sample
absorbance at the analysis wavelength.
• For cuvette measurements, pathlength is determined by the cuvette
Pathlength setting in the software (see
• Displayed spectra and absorbance values are normalized to a 10 mm
pathlength equivalent.
•
Reported Values
•
Nucleic acid concentration
. Reported in selected unit (i.e., ng/μL,
μg/uL or μg/mL). Calculations are based on modified Beer’s Law
equation using corrected nucleic acid absorbance value.
•
A260/A280 purity ratio
. Ratio of corrected absorbance at 260 nm to
corrected absorbance at 280 nm. An A260/A280 purity ratio of ~1.8 is
generally accepted as “pure” for DNA (~2.0 for RNA). Acidic solutions
may under represent the reported value by 0.2-0.3; the opposite is true
for basic solutions.
•
Dye1/Dye2 concentration
. Reported in pmol/μL. Calculations are
based on Beer’s Law equation using (sloping) baseline-corrected dye
absorbance value(s).
Note
: Although purity ratios are important indicators of sample quality,
the best indicator of DNA or RNA quality is functionality in the
downstream application of interest (e.g., microarray).
Содержание NanoDrop One
Страница 1: ...NanoDrop Micro UV Vis Spectrophotometers NanoDrop One User Guide 269 309102 Revision A May 2017 ...
Страница 18: ......
Страница 28: ......
Страница 58: ......
Страница 134: ...13 Measure Protein Pierce 660 128 NanoDrop One User Guide Thermo Scientific Instrument Settings ...
Страница 144: ......
Страница 152: ......
Страница 159: ...16 Measure UV Vis Thermo Scientific NanoDrop One User Guide 153 ...
Страница 160: ...16 Measure UV Vis 154 NanoDrop One User Guide Thermo Scientific ...
Страница 193: ...18 Learning Center Set Up the Instrument Thermo Scientific NanoDrop One User Guide 187 Instrument Settings ...
Страница 293: ...18 Learning Center Multimedia Thermo Scientific NanoDrop One User Guide 287 Pedestal Cleaning and Reconditioning ...
Страница 294: ...18 Learning Center Multimedia 288 NanoDrop One User Guide Thermo Scientific ...
Страница 314: ...19 Maintenance Instrument Diagnostics 308 NanoDrop One User Guide Thermo Scientific ...
Страница 328: ...7 Technical Support 314 NanoDrop One User Guide Thermo Scientific ...