Abstract: Disclosed herein are apparatus and methods for mitigating column bed compression over time. This invention provides for an improved column design and method of controlling bed density in a chromatographic column using a protruding portion of a filter assembly. The invention results in a higher sorbent bed density than can normally be achieved using a fixed length column of conventional design. The invention may be implemented as a unique filter assembly or as a column tailored for the application and a matching filter assembly.

Abstract: Embodiment of the present invention feature a device having a body, a separation media and a frit element. The exterior surface of the body has a first attachment means positioned radially about at least one of the media chamber and the frit section to form a compact assembly.

Abstract: Embodiment of the present invention feature a device having a body, a separation media and a frit element. The exterior surface of the body has a first attachment means positioned radially about at least one of the media chamber and the frit section to form a compact assembly.

Abstract: Embodiment of the present invention feature a device having a body, a separation media and a frit element. The exterior surface of the body has a first attachment means positioned radially about at least one of the media chamber and the frit section to form a compact assembly.

Abstract: Disclosed herein are apparatus and methods for mitigating column bed compression over time. This invention provides for an improved column design and method of controlling bed density in a chromatographic column using a protruding portion of a filter assembly. The invention results in a higher sorbent bed density than can normally be achieved using a fixed length column of conventional design. The invention may be implemented as a unique filter assembly or as a column tailored for the application and a matching filter assembly.

Abstract: Disclosed herein are apparatus and methods for mitigating column bed compression over time. This invention provides for an improved column design and method of controlling bed density in a chromatographic column using a protruding portion of a filter assembly. The invention results in a higher sorbent bed density than can normally be achieved using a fixed length column of conventional design. The invention may be implemented as a unique filter assembly or as a column tailored for the application and a matching filter assembly.

Abstract: Disclosed is a film, and process for making the same, that can be used as a label and which provides an etched appearance by the application of the combination of at least two layers of coarse-grained inks. A more specific form of the invention is to prepare a heat-shrink overwrap film label as disclosed and then apply it to a regular glass bottle so as to create the appearance of an all-over etched treatment or a look of etched treatment to specific areas only. According to another more specific version of the invention, a heat-shrinkable overwrap sleeve may be printed as described above with a portion of the finish gradated from a full strength coating on the main body section of the container to a lesser degree in a continuous gradation over to a narrower neck part of the bottle to be covered.

Abstract: A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter; and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.

Abstract: A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter; and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.

Abstract: A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter; and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.

Abstract: Disclosed herein are apparatus and methods for mitigating column bed compression over time. This invention provides for an improved column design and method of controlling bed density in a chromatographic column using a protruding portion of a filter assembly. The invention results in a higher sorbent bed density than can normally be achieved using a fixed length column of conventional design. The invention may be implemented as a unique filter assembly or as a column tailored for the application and a matching filter assembly.

Abstract: Disclosed is a film, and process for making the same, that can be used as a label and which provides an etched appearance by the application of the combination of at least two layers of coarse-grained inks. A more specific form of the invention is to prepare a heat-shrink over-wrap film label as disclosed and then apply it to a regular glass bottle so as to create the appearance of an all-over etched treatment or a look of etched treatment to specific areas only. According to another more specific version of the invention, a heat-shrinkable overwrap sleeve may be printed as described above with a portion of the finish gradated from a full strength coating on the main body section of the container to a lesser degree in a continuous gradation over to a narrower neck part of the bottle to be covered.

Abstract: A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter; and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.

Abstract: A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the well having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter within the well; a bed of sorbent particles within the well below the first filter, and a second filter having a diameter smaller than the first filter within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.

Abstract: A solid phase extraction (SPE) device having a reservoir with an opening; a well comprising an internally tapered wall, the wall having a wider interior diameter at an end closest to the opening than at an exit spout; a first filter placed within the well; a bed of sorbent particles placed within the well below the first filter; and a second filter having a diameter smaller than the first filter placed within the well below the bed of sorbent particles and above the exit spout is provided. A method of performing SPE using the device is also provided.