ANALYSIS
changers. The plate changers enable non-stop temperature-controlled analysis of thousands of samples. The Nexera automatically blends mobile phases at any set ratio, speeding up the preparation of buffer solutions and the dilution of solvents. The Nexera’s compact design
saves valuable bench space while using over 80% less electricity when on standby. In partnership with the Enabling
Technologies Consortium (ETC), Shimadsu also previewed the Nexera preparative supercritical fluid chromatography (SFC) system. This next-generation prep system provides the pharmaceutical industry with reliable high-performance semi-prep purification. Part of the Nexera UC platform,
each Nexera semi-prep system is configurable to user specifications in order to optimally perform the desired purification function including chiral or achiral purifications, single injections, stacked injections, and fraction collections from several microlitres and litres.
Shimadzu also released the new
Fraction Collector FRC-40 for high- performance liquid chromatography, which is said to significantly advance preparative scale fractionation. It incorporates improved fraction simulation to ensure pure fractions. Operators simply select the peaks of interest, and the software dynamically configures parameters that will collect them. Users can also easily change system parameters, such as the pump flow rate and detector settings, during analysis to maximise efficiency. The unit is compatible with a variety of MTPs, vials, test tubes
and bottles and users can select the fraction size that best fits their analysis, maximising the number of fractions they can collect. Racks are specified through the software, allowing multiple users to collect fractions without the risk of cross-contamination or mix-up. The open access design allows racks to be removed and replaced during analysis, enabling multiple purifications to take place using a single HPLC system.
In addition, Shimadzu showed
its new Hemp Analyzer, a high- performance liquid chromatograph (HPLC) turnkey analyser for quantitative determination of cannabidiol (CBD) and cannabinoid content. It is a comprehensive package that includes all required hardware, software, consumables and analysis workflow to run samples in the shortest possible time. The three included method packages address high sample throughput, enhanced sensitivity, and high resolution. The High Throughput method is
designed for analysis of CBD and nine other commonly requested cannabinoids in under eight minutes. The High Sensitivity method includes THCV in the target analyte list, with an instrument cycle time of under 10 minutes. The short analysis time produces the sharpest chromatographic peaks for the best overall sensitivity. The High Resolution method presents full baseline resolution for all 11 compounds and analysis time under 30 minutes.
Digestion CEM’s Discover SP-D 80 microwave digestion system runs 1-2g samples with ease, performing acid digestion
PittCon’s exhibition floor
for trace metals analysis in as little as 10 minutes, including cool down, with full pressure and temperature control of every sample. It is capable of temperatures up to 260°C and can accommodate a wide variety of samples including pharmaceutical, food, plastics, oils, organics, inorganics, metals, using US EPA Methods 3015, 3051, and 3052. The system features individual sample programming, allowing samples with different parameters or methodologies to be run in any sequence. It uses 80mL quartz vessels with easy-to-use, disposable, snap-on caps for which Teflon liners are available to make clean-up quick and simple for samples such as soil. An optional, automated 24-place sample deck allows the system to run unattended overnight. CEM also introduced Disposable
Glass Liners for sample preparation in trace metals analysis. They are simple-to-use with CEM MARSXpress Plus vessels in MARS 6 microwave digestion systems equipped with iWave temperature measurement sensors. This light emitting technology is capable of seeing through the vessel and liner material to measure the actual temperature of the sample solution giving the user better control over every reaction. The liners eliminate time consuming vessel washing and the risk of cross contamination. Samples can be weighed directly into the liner, reducing static interference common with Teflon vessels, and digested samples can be diluted in the liner prior to placement in an autosampler for analysis.
Stirring technology Among the more mundane, but no less sophisticated equipment on show, Gate Scientific expanded its wireless smartSENSE stir bar family with pH and spin sensing capabilities, with what it claims is the world’s first stir bars capable of continuous pH measurement and spin monitoring along with temperature feedback. The bars are equipped with RFID for communication and power, for temperature, pH and spin sensing and the state-of-the-art digital programmable chemical lab station for heating, stirring, wireless sensing, remote control and monitoring. The stir bar won the Gold Excellence Award at Pittcon 2018.
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