Chromatography Instruments
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| Brand | ZOEX |
|---|---|
| Origin | USA |
| Model | ZX-1 / ZX-2 |
| Cooling Method | Liquid Nitrogen or Electronic Cryogenic Cooling |
| Modulation Principle | Dual-Stage Thermal Jet Modulation |
| Compatibility | Agilent, Shimadzu, Thermo Fisher, and Other Standard GC Platforms |
| Interface | Non-destructive, GC-native mounting |
| MS Coupling | Compatible with Quadrupole GC-MS, TOF-MS, and High-Resolution Mass Spectrometers |
| Peak Capacity Enhancement | >10× vs. 1D-GC |
| Minimum Detectable Volatility | C4 hydrocarbons (with LN₂ cooling) |
| Regulatory Alignment | Designed for GLP-compliant laboratories |
| Brand | Dongxi Analysis |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Regional Classification | Domestic (PRC) |
| Model | GC-4000A |
| Instrument Type | Benchtop Laboratory Gas Chromatograph |
| Application Scope | General-Purpose Analytical GC |
| Oven Temperature Range | (Ambient + 5)°C to 400°C |
| Programmable Temperature Ramp | Up to 40°C/min (typical range) |
| Carrier Gas Flow Control Range | 0–100 mL/min (N₂, H₂, He) |
| Carrier Gas Pressure Control Range | 0–100 psi |
| Injector Maximum Operating Temperature | 400°C |
| Injector Pressure Setting Range | 0–100 psi |
| Injector Total Flow Setting Range | 0–120 mL/min |
| Detector Options | TCD, FID, FPD, NPD, ECD (user-selectable, up to three simultaneously) |
| Column Compatibility | Packed columns and capillary columns (0.1–0.53 mm ID) |
| Temperature Zones | 7 independently controlled zones (oven, injector ×1, detectors ×3, auxiliary ×2) |
| Oven Programmability | 10-step temperature program with ramp hold |
| Cooling | Motorized rear door auto-opening for accelerated oven cooldown |
| Gas System | Configurable single/dual/triple gas channels |