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eLab - Latest Issue

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Spectroscopy

Contact-free analysis of chemical substances

Processes at the surface of catalysts

Imaging

Simultaneous imaging and photodynamic therapy of cancer

Using 3D imaging to improve the lives of lung disease patients

Dentistry

Pufferfish at the `beak´ of evolution

Incisive research links teeth with diet

Cell Cultures

Fruit flies provide new knowledge about uninhibited cell growth

Stem cell researchers map new knowledge about insulin production

Automation

An environmentally friendly robot

3D characterization of powder gas stream improves process quality in laser material deposition

Process Technology

Ultra-short laser pulses for science and industry

New graphene-based material could revolutionise electronics industry

Previous eurolab editions

June 2011

December 2010

June 2010

Chromatography

Model 312 Portable GC

Detectors: Photoionization detector (PID), Flame ionization detector (FID), Thermal conductivity detector (TCD), Flame photometric detector (FPD), Far UV absorbance (FUV) detector, Catalytic combustion detector (CCD)

Species measured: PID & FID: Organics (VOCs by PID or FID) and inorganic species (H2S, NH3, AsH3... ) that can be ionized by the PID lamp (9.5, 10.6 or 11.7 eV) TCD: Universal detector- fixed gases (O2, N2, CO...), organic and inorganic compounds, very sensitive for H2, He, Xe FPD: Selective response for S or P compounds Far UV: Nearly universal response for organic and inorganic compounds CCD: Combustible compounds such as hydrocarbons

Detection Limit:

PID- 0.5 ppb benzene FID- 50 ppb benzene TCD- H2- 10 ppm; O2 150 ppm

Linear Dynamic Range: PID- 108 FID- 2 x 106 TCD- 2 x 104 FPD- S- 103; P 105 Far UV- 106 CCD- 5 x 104

Sensor(s): 1 or 2 detectors

Precision: +/- 1-2% of reading

Response time: : Depends on retention times

Sample flow rate: > 0.5 LPM

Injection: On-column syringe injection or automatic with 6 port gas valve (optional)

Span Drift: <1% over 24 hours

Zero Drift: NA- autozero on each run

Power consumption: < 50 watts maximum; 115 VAC, 0.5 amps (12 VDC 5 amps???) Dimensions: enclosure - 18.75''x 13.75'' x +7.5''

Weight: Fiberglass case - 27.5 pounds

Instrument operating conditions: 5-40 degrees C, 0-95% RH (non-condensing)

 

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