5 mL of blood sample was withdrawn after four hours.
Sample was withdrawn at various time intervals for recording of UV-Visible spectra.
500 mL sample was withdrawn every 2 days to evaluate the production of bioactives.
A bottle of powder sample was withdrawn at indicated time for analysis.
A 50-μL sample was withdrawn from the solutions after the equilibrium was reached.
Once temperature of reaction was reached to 280 °C, and a sample was withdrawn.
At specific time intervals 2-3 mL of the sample was withdrawn and centrifuged to separate the catalyst.
After every 24 h, 6 ml of the sample was withdrawn from the broth and centrifuged at 10,000 rpm.
A total of 10 feeds were added to the reaction, and sample was withdrawn before every feed for 4-CP and INA quantification.
At a defined time interval, 100 μl of the sample was withdrawn and replaced with the same volume of fresh medium.
200 µL of sample was withdrawn at 3, 6, 9, 12, 18, 24, 36, 48, and 72 h to determine sugar concentrations and the hydrolysis profile.
