Sentence examples for using an external standard from inspiring English sources

The concentration of each enantiomer in water was calculated from calibration curves of the corresponding enantiomer using an external standard.

Specificity in this case can be assigned to the possibility of fragmentation reactions (MSn), which are supported by using an external standard for comparative purposes.

Eluants were monitored by UV-Vis light detection at a wavelength of 254 nm and qualified using an external standard calibration curve.

Population densities were calculated using an external standard curve consisting in a serial dilution of strain O cells in the washing buffer from untreated apples.

Quantitation of the viral load was performed using an external standard curve that was constructed with serial dilution of a plasmid containing the full length of the BKV genome.

The content of dimethylhexane-1,6-dicarbamate in the reaction product was determined using an external standard method and calculated using the equation W sp = W st ·A sp /A st × 100%, where sp and st refer respectively to specimen and standard.

Integration of the NMR signals using a external standard (hydroquinone in a concentric tube) revealed that the solubility of a 1 wt % A6H solution decreased with temperature from 0.16% to 0.11% upon heating from 30 to 80 °C.

Helium was used as carrier gas at a constant flow of 8.8 mL/min and quantification was performed using an external calibration with standard gas mixture.

The amplified cDNA concentration was evaluated using an external curve of standard samples and specific amplification was checked using a melting curve.

Quantification of free inositol in the medium revealed its presence at an approximate concentration of 400 μM, as estimated by using an external myo-inositol standard.

RNA (1 μg) was spiked with 25 pg of bacterial AraB RNA from E. coli used as an external standard (GE Healthcare Bio-Sciences FreiburGermanyand) and reverse transcribed using the iScript Reverse Transcription Supermix for RT-qPCR (Bio-Rad, Hercules, CA, USA).