五月婷网站,av先锋丝袜天堂,看全色黄大色大片免费久久怂,中国人免费观看的视频在线,亚洲国产日本,毛片96视频免费观看

Shimadzu's GCMS-QP5050A benchtop quadrupole mass spectrometer features an extended mass range to 900 Daltons and optional positive and negative chemical ionization (PCI and NCI). This wide variety of ionization modes and ability to analyze high molecular weight compounds makes the GCMS-QP5050A the answer to your application requirements.

Extraordinary Sensitivity
The GCMS-QP5050A can detect 100 pg of methylstearate at S/N better than 60 in scan mode (SIM mode is even more sensitive). Scan speeds of up to 6,750 AMU/sec. are achieved with unit mass resolution. The MS is paired with our GC-17A gas chromatograph, which uses Advanced Flow Control (AFC) for rapid, reproducible results.

Minimal Downtime
All ion source parts can be accessed from the front of the instrument for easy maintenance. The efficient 150 L/sec turbomolecular pump and rotary pump quickly achieve a high vacuum in less than 5 minutes!

Support for a Wide Variety of Applications
The GCMS-QP5050A's exceptional performance can be expanded with a wide variety of accessories, including the DI-50 direct insertion probe in all ionization modes and the PYR-4A pyrolizer 

Ion Source

Ionization mode: EI, PCI, and NCI
Ionization voltage: 70 eV
Ionization current: 60 mA EI, 200 mA CI
Filament: dual
Source temp. control: yes

Analyzer
Mass range: m/z 10 óE900
Maximum scan speed: 6750 daltons/sec (up to 50 scans/sec)
Mass stability: better than 0.15 daltons/12 hr
Rods: cylindrical quadrupole with pre-rods,
off-axis electron multiplier with 7.5 kV conversion dynode
Resolution: 2M or Unity mass resolution

Vacuum System
Main pump: 145 L/sec (5 mL/min) turbomolecular pump, ceramic bearing
Fore pump: 75 L/min rotary vane

Sensitivity
Hexachlorobenzene 10 pg, S/N ratio better than 50:1 for m/z 286. 100 pg methyl stearate S/N ratio greater than 60:1 for m/z 298

Sample introduction system
Tuning compound (PFTBA): introduced automatically through a solenoid valve

Gas chromatograph:
GC-17A ver.3 with split/splitless injector, direct connection capillary interface
Direct probe inlet