See also: Rob™ QPCR reproducibility | Speed | Accuracy & Precision | Liquid Level Detection (LLD) | OneDip™ QPCR reproducibility


OneDip™ QPCR reproducibility


Rob™ OneDip™ QPCR set-up reproducibility for 2μl template


OneDip™ mode aspirate 3 X “template volume” and dispense template in three target wells.
OneDip™ mode saves 65% of tip costs and improves speed for a 96-plate with triplicates by 50%.

The template is a single stranded DNA fragment containing the beta-actin amplicon sequence. Primers are specific for mouse beta-actin.


Results:

Based on single template
Cq
Average: 21.25
Standard deviation (Cq): 0.19
Cq
Max – CqMin: 0.82
  Based on average Cq value of triplicate
Cq
Average: 21.25
Standard deviation (Cq): 0.075
Cq
Max – CqMin: 0.23

Run conditions:
QPCR: HotStart activation, 2 min at 95℃ followed by 40 cycles with 10 s at 95℃ and 10 s at 60℃. Run time: 44 min.
Set-up: 18 μl master mix was dispensed using multi dispense followed by 2 μl template using OneDip™ technology (multi dispense) from one tube. Run time: 4 min 57s.

Reagents:
qPCRBIO SyGreen Mix from PCRBiosystems was selected because it is the fastest and most sensitive kit available on the market. It combines the latest polymerase and buffer technology with a proprietary intercalating dye that doesn’t inhibit PCR.

QPCR instrument:
Mic QPCR-instrument from Bio Molecular Systems is the most precise QPCR instrument available today. Virtually no temperature differences between samples during the run combined with the magnetic induction heating ensures highest possible quality on data.
Reproducibility of Mic is within Cq 0.20.


Conclusion:
OneDip™ mode is useable from 2 μl template volume for detection and concentration calculations. The variance between average triplicate values is less than for individual templates. Larger template volumes will substantially improve precision. Lower volumes are not recommended.
We recommend to use single dispense for accurate expression analysis and concentration determinations for low template volumes.

AlphaHelix Technologies AB
Penarp 1150
SE 264 91 Klippan 
Sweden

Tel: +46 18 12 07 01
Email: sales@alphahelix.com
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