Laboratory automation
SPDE – The Magic Needle
Chromtech
SPDE from Chromtech enriches compounds from liquid samples or the gas space above them. An internally coated needle extracts the fabrics dynamically and releases them in the hot GC injector. Automated with PAL RTC and PAL RSI.
- Manufacturer
- Chromtech
- Product range
- Laboratory automation
- Advice
- Direct from Chromtech
Dynamic solid phase extraction
A coated needle enriches the sample.
A 2.5 ml gas-tight syringe repeatedly pulls liquid or the gas space over the sample through an internally coated stainless steel capillary. In this case, the target compounds remain behind at the extraction phase. Coating, temperature and number of piston strokes are chosen to suit the method.
- Solvent-free extraction from liquid or headspace
- Automated sample preparation with PAL RTC and PAL RSI
- Thermal desorption directly in the hot GC injector
- No separate thermodesorption unit required
From extraction to injection.
After the extraction strokes, the syringe receives carrier gas at the rinsing station. If necessary, the needle and syringe are dried there. Subsequently, the hot injector releases the enriched substances and the carrier gas transfers them to the chromatographic column.
Typical applications are food and aroma research, environmental analysis and forensic investigations. Sensitivity and service life depend on sample, coating and operating conditions.
Terms: SPDE stands for Solid Phase Dynamic Extraction, in German dynamic solid phase extraction. Headspace is the gas space above a sample. GC means gas chromatography; PTV means a programmable temperature-controlled evaporator.
Brochures
Product information and method comparison.
The comparison of 2015 shows SPDE with cooled needle and SPME, both with cold trap. The results are based on the documented experiment.
In the film
SPDE with the PAL agitator.
Yassin Hardi shows the dynamic solid phase extraction with the standard agitator of the PAL system. The agitator moves the sample vessel and mixes the sample during extraction.
In this embodiment, no magnetic stirrer rod is required in the sample vessel. The shaking mixing complements the repeated piston strokes of the SPDE syringe and can be integrated into the automated process with PAL RTC or PAL RSI.
Agitator refers here to the PAL module for mixing the sample by shaking.
SPDE demonstration on LinkedInAdvice and integration
For the appropriate system configuration.
Whether this product fits your application depends on the sample, method and existing device environment. We clarify the requirements, coordinate the configuration and accompany the integration into your laboratory process.