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5. Absorbance Measurement Apps
Nucleic Acid Apps
The nucleic acid apps are optimized to use the sample type specific concentration
calculation factors. The ssDNA and Microarray apps enable user-defined factors
for calculating oligo concentrations.
Protein Apps
Use the Protein A280 app for purified proteins. The Peptide app is used for low
concentration samples that do not have aromatic residues such as Trp, Tyr or Cys-
Cys disulphide bonds. The Protein A280 app is recommended when the sample
does contain aromatic rings.
Note: For accurate calculated concentrations, use the Run screen drop-down
list to select the optimal sample type for the specific protein measured.
Colorimetric assays are generally recommended for whole cell extracts.
Custom Method Apps
These applications are used to create, save and access user-defined methods.
Additional Apps
The UV-Vis app is used to monitor up to 6 specific analysis wavelengths. The
Kinetics application is a cuvette mode only application and is available for the DS-
11+ model. The OD 600 application is generally used to determine the optical
density of microbial cell cultures at 600 nm.
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