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| Brand | Dongxi Analytical |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | PTR-QMS3500 |
| Pricing | Upon Request |
| Mass Range | 1.5–600 amu |
| Resolution | Unit Mass Resolution |
| Response Time | 100 ms |
| Detection Limit | 100 pptv (for benzene) |
| Linear Dynamic Range | 50 pptv – 10 ppmv |
| Adjustable Inlet Flow Rate | 80–800 sccm |
| Heated Capillary Inlet Length | 1.0 m (inert, temperature-controlled up to 150 °C) |
| Drift Tube/Reaction Chamber Temperature Range | 40–150 °C |
| Primary Reagent Ion | H₃O⁺ |
| Optional Reagent Ions | NH₄⁺, O₂⁺, NO⁺ |
| Power Supply | 220 V AC |
| Dimensions (W × H × D) | 48 × 54.5 × 63 cm |
| Weight | ~100 kg |
| Remote Interface | 4–20 mA output & MODBUS RTU protocol support |
| Brand | East & West Analytical Instruments |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | OEM Manufacturer |
| Model | PRO-MS 3600 |
| Detection Range | ppb to 100% (v/v) |
| Detection Principle | Quadrupole Mass Spectrometry |
| Response Time | < 1.5 s (typical for single-point analysis) |
| Ion Source | High-efficiency inertized electron ionization source |
| Quadrupole Material | Passivated stainless steel |
| Inlet System | Multi-stage differential pumping with low-dead-volume valving |
| Software | Real-time spectral acquisition and quantitative analysis suite compliant with GLP data integrity requirements |
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