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Bioanalysis/PK

Bioanalysis/PK

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MRM method transfer from a SCIEX Triple Quad or QTRAP 6500+ system to the SCIEX 7500 system

MRM method transfer from a SCIEX Triple Quad or QTRAP 6500+ system to the SCIEX 7500 system

General recommendations when beginning method development Objective: The purpose of this document is to provide a quick reference for transferring MRM-based quantification methods from a SCIEX Triple Quad or QTRAP 6500+ system to a SCIEX 7500 system. While the best...

Automatic calibration in minutes for microflow LC  with the OptiFlow source on ZenoTOF 7600 system

Automatic calibration in minutes for microflow LC with the OptiFlow source on ZenoTOF 7600 system

The OptiFlow ion source for the SCIEX ZenoTOF 7600 system is equipped with an ESI calibration probe for automatic calibration during microflow experiments (diagram below). The ESI probe is installed orthogonal to the microflow probe in the OptiFlow source and...

What is the Zeno threshold and what does it do?

What is the Zeno threshold and what does it do?

With the introduction of the Zeno trap on the ZenoTOF 7600 system, sensitivity improvements on the order of 4 to 25x can be seen for MS/MS analysis, because of the optimization of duty cycle.1 When concentrations are low and peak intensities are limited, this bump in...

Standard addition workflow – for quantification and calculating background levels

Standard addition workflow – for quantification and calculating background levels

The method of standard addition is a quantitative analysis approach used in situations where matrix effects from complex samples contributes to the analytical signal. This makes it impossible to compare the analytical signal between sample and standard using a...

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