FLEXIBLE, PRECISE, MODULAR
FREESTYLE Forensic
Within forensics and toxicology, there are often samples that are considered difficult to process due to their characteristics. These could be, for instance, especially viscose samples or samples with protein filaments. These often lead to deposits in tubings and valves and ultimately cause blockages. LCTech offers a technically brilliant solution for these particularly difficult samples.
Examples of Applications Bidirectional SPE
Used in the Daily Routine
Determination of drugs in human brain
Determination of drugs in human blood
High-throughput determination of drugs in horse or camel urine in doping control
FREESTYLE Piles on the Pressure!
Positive pressure of up to 4 bar can be used in the FREESTYLE system, which pushes these difficult-to-process samples through the column in a controlled manner. If a column should nevertheless become blocked, the adjustable pressure monitoring system ensures that the system stops processing this sample, marks the sample in the sample list, cleans itself and begins processing the next sample in the sample sequence. This guarantees the continuous processing of a sequence, which takes a great deal of pressure off your laboratory. This non-stop policy enables unattended sample processing overnight or over the weekend.
Increase Flow Rates
The additional use of plungers means that dead volumes in the columns can be minimised and flow rates increased. Conditioning, washing and elution solutions are thus applied to the column at constant pressure, the processing time for the sample is shortened.
The Perfect Sample Loading!
Sample volume: 5 mL
Ideal for forensic matrices, such as e.g. postmortem blood, urine, and highly viscose and particularly adhesive matrices such as brain. The sample is aspirated via the tip of the SPE column. It passes through the column’s sorbent and, immediately afterwards, is discarded in the waste in the opposite direction, where the sample flows through the sorbent a second time.
Ideal sample loading for forensic applications:
- No cross-contamination as sample does not come into contact with the system at any time
- Sample is available for additional analyses
- Elution with minimal amounts of solvents
- Minimises unwanted matrix effects
Sample volume: 0.3 – 1 mL e.g. for small sample volumes.
The sample is aspirated by the sample needle and released directly into the SPE column again.
Sample volume: 1 - 100 mL e. g. for blood and urine samples, horse and camel urine samples.
The sample is aspirated by the sample needle into the chemically inert, easy-to-clean sample loop and, from there, released into the SPE column via the valve.
Dual SPE
In the Daily Routine
Automated processing of two solid phase extractions with different column formats one after the other in one method without manual intermediate steps.
You can read more details about this in the following article in Laborpraxis.
Read more (german)
Determination of steroids in animal food