dn/dc and UV Extinction Determination
ASTRA has several different methods for determining the dn/dc or UV extinction coefficients for your sample:
If the assumption can be made that 100% of the injected mass reaches the Optilab or UV detector, it is possible to calculate the dn/dc or UV extinction coefficient on-line.
Alternately, if an Optilab and UV detector are used in combination, and the dn/dc value is known for the sample, ASTRA can calculate a UV extinction coefficient for the sample.
If a third-party RI detector is being used, ASTRA provides an experiment template to calculate the RI calibration constant for the analog input signal.