MS spectra were externally calibrated using Peptide Calibration Standard II (Bruker Daltonics).
The mass spectrometer was externally calibrated by peptide calibration standard II (Bruker Daltonics).
All spectra were externally calibrated using a peptide calibration standard.
Spectra was externally calibrated using a peptide calibration standard (Bruker Daltonics 206095).
Measurements were externally calibrated with a standard peptide mixture (Peptide Calibration Standard, Bruker Daltonics).
The instrument was externally calibrated prior to analysis using the Bruker protein calibrant kit (5000 17000 Da), and the sample spectra internally recalibrated according to the accurate molecular weight of three antennal proteins (8015, 11941 and 13936 Da) measured in the FTMS analyses.
Measurements were externally calibrated with 8 different peptides ranging from 757.39 to 3147.47 (Peptide Calibration Standard I, Bruker Daltonics) and internally re-calibrated with peptides from the autoproteolysis of trypsin.
Spectra were externally calibrated on clusters of arginine (10 mg l-1 in methanol); calibration errors in the relevant mass range were always below 0.05 ppmv.
The m/z scale of all mass spectra was externally calibrated using G2421A electrospray "tuning mix" from Agilent Technologies (Santa Rosa, CA, USA) as calibration standard.
The mass spectra were externally calibrated using the peptide standard mixture II from Bruker Daltonics GmbH.
A trend we are seeing develop in the best managed companies is that boards aren't satisfied with an externally calibrated view of just the CEO and his or her direct reports.
