摘要:
Disclosed is a continuous process in which a subset of a number of mutually identical columns, are connected in series. The process liquid, e.g. crude cell culture harvest, is supplied to the most upstream column of the subset. It flows successively through the in series connected columns and leaves the subset through the most downstream and flows into the downstream collection vessel. As soon as the packed bed of the most upstream column is become saturated with product, this column is disconnected from the subset. It is removed from the series connection. A replacement, identical, column is added such that it is connected in series downstream from the most downstream column of the subset. This process is repeated.
摘要:
A liquid chromatographic column includes: a cylindrical column body; an inflow-side filter that is disposed at an eluent inflow-side end of the column body; an outflow-side filter that is disposed at an eluent outflow-side end of the column body; and a filler that is filled between the inflow-side filter and the outflow-side filter, in which the inflow-side filter has a two-layer structure consisting of a first resin filter member and a second resin filter member which are disposed in this order from a side of the filler, and the first resin filter member has an indentation elastic modulus lower than that of the second resin filter member.
摘要:
The invention discloses a method for individually assessing the cleanness of at least one of an upper (2) and a lower (3) bed support in a process column (1). The method comprises the steps of: a) providing a process column (1) comprising an upper (2) and a lower (3) bed support, a column chamber, a movable adaptor (5), an upper outlet (6) and a lower outlet (7); b) conveying liquid through one of the lower (3) and upper (2) bed supports, e.g. by moving the adaptor (5) downwards at a predetermined rate with one of the upper and lower outlets closed and the other open to force liquid through one of the lower and upper bed supports, and; c) measuring the differential pressure over the bed support through which liquid passes.
摘要:
A system that incorporates teachings of the subject disclosure may include, for example, a process that includes obtaining a porous medium comprising a porous material having a first shape and an initial porosity profile. The porous medium is engaged with a cavity in a fluidic device, wherein the cavity is in fluid communication with a channel of the fluidic device. The first shape of the porous material can be adjusted to a second shape resulting in the initial porosity profile being adjusted to a target porosity profile. Such adjustment can be accomplished by the engaging of the porous medium with the cavity, by pre-adjusting a shape of the porous media before insertion into the cavity, or by some combination thereof. Other embodiments are disclosed.
摘要:
The current invention is directed to a chromatography column separator which separates the chromatography column in an upper chromatography column chamber and a lower chromatography column chamber, and which has a variable position within the chromatography column, and which is embedded by the chromatography material. The separator allows the replacement of the chromatography material in the upper chromatography column chamber without the need to replace the chromatography column material in the lower chromatography column chamber and it allows also the combination of two different chromatography materials with different chromatographical functional groups in one chromatography column.
摘要:
A chromatography column design and a packing device, as well as a method for obtaining a column with a very compact and uniform bed are provided. The bed remains compact and uniform during operation of the column and during sanitization, storage and transportation of the column. The amount of hardware, particularly the hardware parts in contact with product, is minimized, especially with the implementation of an internal liner. With this internal liner, the packed bed can be separated from the column in intact form, or even prepared separately from, and outside of, the column.
摘要:
A durable on-column tunneled frit was developed for use in nanoflow UPLC systems. The frit was tunneled during sol-gel reaction. The tunneled-frit fabrication process is easy and reproducible in terms of back pressure and durability. This design creates low backpressure with high liquid flow, which is suitable for the nanoflowUPLC application. A short packing (2 cm C18 particle) tunneled-frit column was demonstrated to sustain 10,000 psi continuous liquid flow for over one week without any particle leakage or pressure instability. The tunneled-frit was also successfully applied to the fabrication of nanoUPLC trapping and analytical column system. It was demonstrated to have high separation efficiency and sensitivity for the analysis of tryptic peptides as well as improved detection sensitivity for phosphopeptide analysis.
摘要:
Frits for use in analytical instrument systems, including liquid chromatography systems, particularly HPLC and UHPLC systems, and methods of making and using the frits, are provided. The frits can have multiple layers, which may have different surface finishes on different surfaces.
摘要:
A reusable liquid chromatographic column consists of three parts, a column body with an integral outlet port molded on one end, a sealing insert with an inlet port, and a perforated cap providing downward force to compress the sealing insert into the column body. A wedge-like seal is employed to seal the connection between the sealing insert and the column body. Two filters on both ends of the column body are used to prevent escape of packing materials from the column chamber under pressure. Hand tightening is adequate to seal the connection by screwing the perforated cap onto the column body. The column is reusable due to its simple disassembling and reassembling processes. It is also disposable due to its inexpensive fabricating materials and manufacturing process.
摘要:
Described is a reusable fitting for attaching a conduit to a port. The fitting includes a housing, a spring, a retainer and cap. The retainer is capable of locking and unlocking a conduit in the fitting. The fitting provides a high pressure fluid-tight seal and a substantially zero void volume at the junction of two fluidic conduits. The fitting is removable, reusable and replaceable, and allows a user to make and remake connections of a capillary to a fluidic port without permanently binding a ferrule to a specific capillary and thus to a specific port. The fitting can be replaced if part or all of the fitting is damaged during use.