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| Brand | Pfeiffer Vacuum |
|---|---|
| Origin | Germany |
| Model | QMG 250 |
| Detection Principle | Quadrupole Mass Spectrometry |
| Configuration | Online, Integrated Vacuum System |
| Mass Range | up to 300 amu |
| Repeatability | ≤ ±0.5% RSD (for masses < 300) |
| Response Time | < 1 s (typical for partial pressure monitoring) |
| System Includes | QMG 250 quadrupole mass spectrometer, HiCube 80 turbomolecular pump set, PKR 251 cold cathode vacuum gauge, and custom four-way stainless-steel chamber assembly |
| Brand | Pfeiffer Vacuum |
|---|---|
| Origin | Germany |
| Model | QMG 250 M1 |
| Detection Principle | Quadrupole Mass Spectrometry (QMS) |
| Configuration Type | Benchtop Modular System |
| Mass Range | 1–300 u |
| Detection Limit | <1×10⁻¹⁴ mbar (typical for H₂) |
| Response Time | ≤1 s (for major species under optimized inlet conditions) |
| Repeatability | ±0.5% RSD for H₂, O₂, CO₂ at stable vacuum and temperature |
| Operating Vacuum Range | 1×10⁻⁹ – 1×10⁻³ mbar (with turbomolecular pumping) |
| Interface | Capillary Inlet (standard), optional heated transfer line |
| Compliance | CE, RoHS, ISO 9001 manufacturing environment |
| Software | PV MassSpec v3.x (supports ASTM E1946-22 data reporting templates, GLP-compliant audit trail, 21 CFR Part 11 optional module) |
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