Abstract:
The present disclosure relates to a method of configuring a chromatography system (500) whereby a separation column (515) having an operative flow rate is matched to an appropriate restrictor (521), which is capable of maintaining the post-column pressure at a target pressure. A kit comprising the matched column-restrictor pair and a processing unit is disclosed as is an integrated microfluidic chromatography system comprising such a matched column-restrictor pair.
Abstract:
Apparatuses and associated methods are described for the efficient evaluation of C1-containing substrates, and especially for such evaluation conducted locally, or on-site, at a prospective facility for implementation of a biological conversion process for desired end product using a C1 carbon source. The exact composition of a given, industrial C1-containing substrate, as well as the range in composition fluctuations, are generally difficult to reproduce at a remote facility (e.g., a laboratory or a pilot-scale or demonstration-scale process), as required for the accurate prediction/modeling of commercial performance to justify large capital expenditures for commercial scale-up.
Abstract:
Exemplary embodiments of the present disclosure are directed to manipulating pressure-related hysteresis in a pressurized flow system by setting the pressure of the system to a predetermined location in the hysteresis band to advantageously minimize an effect of the pressure related hysteresis on the pressure of the system or to advantageously benefit from the effects of the hysteresis on the pressure of the system.
Abstract:
The invention provides an apparatus for supercritical fluid chromatography. The apparatus comprises a binary pump; an autosampler; a sampling valve; a first and second port switching valve; a first and second manifold; two or more channels, each having a check valve assembly, a separation column and one or more detectors operatively connected thereon; and a backpressure regulator. The apparatus also includes computer software and hardware to control distribution of fluid through the apparatus, including switching between a multi-channel mode or a single channel ode; 2) analyze data collected by the one or more detectors; and 3) optimize separation of analytes by controlling solvent combinations, concentration gradients, pressure and temperature. The apparatus excludes additional backpressure regulators or pumps on individual channels. Also provided is a method of screening a sample, using supercritical chromatography, using the above apparatus, where multiple samples can be screened simultaneously with parallel processing.
Abstract:
The present invention relates to methods, systems and software for optimising the separation of a sample of biomolecules eluted from a chromatography column in which the concentration of a second component added to an elution buffer is varied in order to form an elution buffer solution of varying second component concentration. The concentration of the elution buffer solution is held at a current value or increased at a slower rate when a hold gradient event occurs and the varying of the concentration of the elution buffer solution is restarted or increased at a higher rate after a restart gradient event occurs. A hold gradient event occurs when a detector signal relating to the amount of biomolecules in the elution buffer solution rises past a first threshold and a restart gradient event occurs when the signal falls past a second threshold.