Environmental Studies Using the Tecan QC Kit and an Automated Liquid Handling System
Poster Feb 10, 2015
George Rodrigues, Emily Avis, Alf Price, Verena Gerber
Liquid handler performance can be optimized by adjusting system operating parameters, but the effect of environmental conditions on liquid handling quality is often underappreciated.
The study described in this poster illustrates the effect of two environmental factors (air temperature and humidity) on the volumetric performance of a Tecan Freedom EVO ® pipetting robot, equipped with a liquid LiHa (Liquid Handling Arm). Tecan recommends that the EVO be installed in a controlled environment. However, some users choose to operate in less controlled conditions.
This study uses a two factor design (temperature and humidity) to investigate volumetric performance (precision and trueness) at environmental conditions from 15 °C to 30 °C and 30% to 80% relative humidity. Nine environmental conditions were tested, the midpoint, four corner cases and four edge cases. Replicate testing was performed at the midpoint and corner cases.
The Tecan QC Kit, which is based on Artel’s ratiometric photometry, was used to make measurements at each set of environmental conditions. The precision (%CV), and trueness (%SE) is reported for each environmental condition using default liquid classes.
Using Elemental Analysis For Discrimination Of Pinot Noir Wines From Six Different Districts In An AvaPoster
The determination of geographical origin of wine is gaining increased interest by researchers and federal agencies around the world, partially due to increased fraud with regards to place of origin labelling. For wine, multi-elemental profiling of macro, micro, and trace elements has been proposed for determination of authenticity. Commercial wines from different wineries in 5 different neighborhoods within one AVA show characteristic elemental fingerprints. Macro, micro and trace elements as well as elemental ratios contribute to the observed separation, indicating the involvement of multiple factors and underlying mechanisms, including location and soil composition, elemental uptake by vine and rootstock, viticulture and nutrient management, water sources, and small differences in the different wineries.READ MORE
Fast arsenic speciation analysis of wines and rice with LC-ICP-QQQPoster
This method was designed in response to recent and proposed food standards, both international and national, that limit inorganic arsenic rather than total, organic, or individual arsenic species such as arsenite (AsIII) and arsenate (AsV). Analysis time is 10x faster than the current FDA regulatory method, increasing sample throughput, avoided spectral interferences and dramatically increased sensitivity. Validation data from two laboratories demonstrate the method’s accuracy and reproducibility of both wine and rice matrices in a single analytical batch.READ MORE
Elemental profiles of whiskies allow differentiation by type and region by inductively coupled plasma –optical emission spectroscopy (ICP-OES)Poster
The analysis of the elemental composition of whiskies provides a host of important information including sample origin and understanding how different whiskey styles are caused by processing equipment and raw materials. Preliminary data analysis of the whiskies showed that element compositions could possibly be used to differentiate samples based on age, type, and region.READ MORE