Applications Forensics 2016-11-21T17:53:16+00:00

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Dynamic Devices implementation of Volume Verified Pipetting (VVP) now gives every forensics application the ability to record and validate EVERY sample & reagent transfer. Out-of-the-box VOLUMETRIC pipetting in a flexible liquid handling robot automation platform. No longer are results generated on ‘averaging out’ calibration curves of the way liquids need to be handled, results using VVP are now iron-clad.

The need to process a greater number of convicted offender samples for DNA analysis, newborn screening programs and drugs of abuse testing are becoming an increasing dilemma to automate and validate. Sample matrixes of blood samples, swabs, and FTA/S&S Cards can now be handled in a way not available in the market before.

Now imagine a new liquid handling robot platform that will record and confirm the actual volumetric amount of every transfer and attach this information directly to all the other sample ID tracking information in a consolidated and secure database. With Dynamic Devices VVP in a Fixed-8 (f8) VVP and 96 VVP, it is now possible to combine actual volumetric transfer data of every liquid with sample bar code IDs, reagent lot numbers, disposable tip lot information, time stamps and all the rest of the information available in every run of the system.

By approved calibration methods, VVP uses active flow sensors to monitor and record a liquid entering a disposable tip. No ‘averaged’ liquid classes are needed or pressure curves monitoring gross errors like bubbles or short samples are need, VVP aspirates and dispenses VOLUMETRICALLY while actively accounting for viscosity and temperature during the process. Give it a volume and it aspirates that liquid until the proper volumetric amount is in the tip, it then records the actual volume and stores that volume for validation and security.

D2’s Volume Verified Pipetting (VVP) offers sample transfer volumetric validation within applications that deal with complex sample matrixes. Tissue, cells, serum, plant extracts and even forensics field sample collection utensils, like swabs, create pipetting issues for liquid handlers without the ability to monitor, control and recover from clogging. VVP not only offers the recovery of complex pipetting matrixes but actively accommodates for sample viscosity and temperature automatically eliminating the need to develop complex liquid classes for every type of sample matrix.

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The power of the Fixed-8 (f8) VVP pipetting tool to aspirate and dispense 8 different volumes in an economical format makes the Lynx a perfect fit in the forensics lab.  The f8 VVP Pipetting Tool will transfer samples from a microplate format, 9 mm spacing, while recording the volume entering and leaving the tip every time.  With the Lynx platform with the vision scanner, for reading bar codes, and the VVP volume data reporting capabilities, chain-of-custody samples are fully traceable during the automated liquid transfer steps. If higher throughput is needed, the 96 VVP Pipetting Tool is available with 96 different verified reported volumes.

Transferring Complex Samples – Whole Blood, FTA Paper & Swab Samples

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D2’s Volume Verified Pipetting (VVP) offers sample transfer volumetric validation within applications that deal with complex sample matrixes. Tissue, cells, serum, plant extracts and even forensics field sample collection utensils, like swabs, create pipetting issues for liquid handlers without the ability to monitor, control and recover from clogging. VVP not only offers the recovery of complex pipetting matrixes but actively accommodates for sample viscosity and temperature automatically eliminating the need to develop complex liquid classes for every type of sample matrix.

VVP – Colt/Clog detection and on-the-fly correction
One of the most sought after functionalities in liquid handling robotics is the ability to run individual channels within a high throughput head like the 96 VVP Pipetting Tool. Now, when pipetting errors are encountered by a channel, the aspiration is immediately stopped for just the erred channel while the reset of the samples are aspirated correctly. The head may then clear the erred channels above the liquid and dip the head again into the samples to re-try the aspiration to correct for the error on-the-fly.