Comstock Inc. miniTOF II system飞行质谱仪
We supply the miniTOF II as a complete system including software, pumps,
and data acquition software.
PERFORMANCE
1, Mass Resolution Typical M/dM resolution as it is tested at the factory is about 1,200.
2, Mass Range 1 ~ 1200 nominal.
3, Stability Peak shift < 0.02% over 24 hours. Peak broadening not observed over 24 hours.
4, Minimum Detection Limit 5 ppm without pre-concentration. The limit is a function of measurement time (= number of sweeps) and the gas mixture injected.
5, Dynamic Range The dynamic range is a function of measurement time and discriminator setting, among other parameters. Due to the nature of TDC counting, the dynamic range, defined as the maximum count that can be stored in the system divided by the least significant count, can be an extremely large number. The maximum event counts (the vertical scale on the spectrum display) is 2^64.
6, Mass Calibration Carried out on quadratic model based on three or more data points. Single set of coefficients over the mass range. Calibration coefficients could change significantly when detector voltage is changed. Operating software issues a warning in a pop up window when it sees an old mass calibration. Operator defines how old is old. When the software does not see calibration performed for that voltage, it refuses to convert the time scale (horizontal) to mass scale.
Comstock Inc. miniTOF II system飞行质谱仪
询价采购Comstock Inc. miniTOF II system飞行质谱仪
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