EXPEC-3750
EXPEC 3750 GC-MS
A single quadrupole GC-MS with EI and CI ion sources, automatic plasma cleaning of the ion source and an 8-inch touch screen. It is built to keep analysis stable while needing far less maintenance.
Key Features
- Ambient air VOCs: Monitoring volatile organic compounds in urban air, following the 2019 monitoring plan
- Organophosphorus pesticides in water: Determining 28 organophosphorus pesticides per HJ 1189-2021
- PAHs in soil and sediment: Determining 16 polycyclic aromatic hydrocarbons per HJ 805-2016
- Phthalates in electronic polymers: Testing for restricted substances in electrical and electronic products per GB/T 39560
- Banned azo colourants in textiles: Testing per GB/T 17592-2011
- Chloropropanols in food: Determining chloropropanols and their fatty acid esters per GB 5009.191
Technical Specifications
General
- Type: Single quadrupole GC-MS
- Manufacturer: EXPEC Technology
- Gas Chromatograph: GC 2000
- Display: 8-inch colour touch screen (Android), bilingual Chinese and English interface
- Software: GC-MS workstation with batch data processing and cross-sample statistics
Mass Spectrometer
- Ion Source: Universal EI and CI ion sources that can be configured as needed, plus a high-sensitivity SIP ion source
- Ion Source Material: Inert alloy that resists corrosion and high temperature
- Chemical Ionization: PCI and NCI, with methane, isobutane or ammonia as reagent gas
- Ion Source Cleaning: Automatic plasma cleaning, so manual cleaning is only needed every 3–6 months (previously every 2 weeks)
- Quadrupole: High-precision analytical quadrupole; the all-metal pre-quadrupole and main quadrupole are maintenance-free
- Detector: Long-life electron multiplier with a triple off-axis ion path
- Sensitivity: Scan S/N > 300:1 at 0.1 pg octafluoronaphthalene injection (EI)
- Vacuum Technology: Vacuum cutoff to raise sample throughput
- Maintenance: The mass analyzer cover opens without tools
Injection and Sample Pretreatment
- Liquid Autosampler: EXPEC 215 (dual tower) and EXPEC 218 3-in-1 (headspace, liquid and SPME)
- Headspace Sampler: EXPEC 236, fully automatic, up to 111 samples, 300°C flow path
- Purge & Trap: EXPEC 249PT
- Thermal Desorption: EXPEC 225, cold trap down to -30°C
- Pyrolysis: EXPEC 228, under 20 minutes per sample
- Atmospheric Pre-concentrator: Pre 3900 (liquid nitrogen, -196°C, up to 59 Summa canisters) and Pre 4000 (Stirling)
Applications and Use Cases
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Environmental & Water Science
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Food & Beverage
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Pharmaceuticals & Medicines
