Yuri Gerner - Mendota Heights MN, US Quan Liu - Shoreview MN, US Carl W. Sims - Saint Paul MN, US
Assignee:
IDEX Health & Science LLC - Roseville MN
International Classification:
B01D 53/22 B01D 19/00 B01D 61/36
US Classification:
96 6, 96 4, 96 8, 96 10, 96193, 95 46, 210640
Abstract:
A liquid degassing apparatus is arranged to limit pervaporation through a membrane by establishing a pervaporation control space at a permeate side of the membrane. The pervaporation control space is defined in a vacuum chamber between the membrane and a shield member. The shield member may be substantially gas and liquid impermeable to maintain an environment in contact with the permeate side of the membrane that is relatively rich in solvent vapor concentration, thereby limiting further liquid pervaporation across the membrane.
Apparatus For Pervaporation Control In Liquid Degassing Systems
A liquid degassing apparatus is arranged to limit pervaporation through a membrane by attenuating pressure oscillations developed by a vacuum pump. The attenuation is obtained through a combination of one or more flow restrictors and added volume chambers fluidly interposed between the degassing chamber and the vacuum pump. The pressure oscillation attenuation may further inhibit cross-contamination of pervaporated solvents among a plurality of distinct degassing chambers.
Apparatus And Method For Removing Gas Prior To Sample Detection And/Or Analysis
James Anderson - Arlington Heights IL, US Raaidah Saari-Nordhaus - Antioch IL, US Rakesh Bose - Wheeling IL, US Carl Sims - Saint Paul MN, US Yuri Gerner - Mendota Heights MN, US
International Classification:
G01N030/02
US Classification:
422070000
Abstract:
An improved apparatus to remove gases (or a particular gas) from a sample prior to detection of the sample. The apparatus and method is useful in the removal of gas from the mobile phase in a detection and analysis apparatus.
Valve And Splitting System For Multi-Dimensional Liquid Analysis
A multi-dimensional liquid analysis system includes a flow splitter for separating mobile phase outflow from a first dimension liquid analysis system into first and second liquid split outlet flows. Volumetric flow rate control of the split outlet flows is provided by a flow control pump which withdraws one of the split outlet flows from the flow splitter at a controlled withdrawal flow rate to define the other split outlet flow rate as the difference between the outflow rate from the first dimension system and the withdrawal flow rate. In this manner, accurate and consistent flow division can be accomplished, which is particularly useful for multi-dimensional liquid analysis.
Carl W. Sims - Santa Rosa CA, US Yuri Gerner - Mendota Heights MN, US Quan Liu - Santa Rosa CA, US
International Classification:
B01D 19/00 B01D 69/04 B01D 53/22
US Classification:
95 46, 96 6
Abstract:
An elongated flow-through degassing apparatus includes an elongated gas permeable outer shell and one or more gas-permeable, liquid-impermeable elongated inner conveyance members extending within the outer shell and at least partially through a chamber defined within the outer shell. The apparatus also includes inlet and outlet junctions for securing the outer shell to the inner conveyance member. The outer shell exhibits a first permeance that is substantially greater than a second permeance of the inner conveyance member. The degassing apparatus may be sufficiently flexible so as to be readily manipulatable into desired configurations.
- Rohnert Park CA, US Carl Sims - Rohnert Park CA, US Chris Hankins - Petaluma CA, US
Assignee:
IDEX Health & Science, LLC - Rohnert Park CA
International Classification:
B01D 19/00 B01D 15/16 B01D 63/08
Abstract:
A membrane gas-liquid contactor is arranged to define a fluid flow path for contact with a membrane in a manner to improve degassing efficiency. A degassing module housing the membrane is arranged with flow fields for distributing the fluid flow throughout the membrane contact area. The distributed fluid flow may have a uniform membrane contact opportunity.
High Pressure Valve With Multi-Piece Stator Assembly
- Oak Harbor WA, US Jon Nichols - Meadow Vista CA, US Jeremy Hayes - Santa Rosa CA, US Carl Sims - Santa Rosa CA, US Mark Tschann - Sonoma CA, US
International Classification:
G01N 30/20 B01D 15/22 F16K 11/074 F16K 31/04
Abstract:
Valve with multi-piece stator assembly for use with liquid chromatography or other analytical systems. A separate and removable stator plate is provided with a mounting device to provide a multi-piece stator assembly. The mounting device is adapted on one side to engage and contact the stator plate, and on the other side includes a plurality of ports for fluidic connections which are in fluid communication with fluid passageways in the stator plate. By making the stator face a separate component, the overall costs of the valve can be reduced, different materials can be used for the mounting device and the stator, and the valve can be used for ultra-high pressure applications, including in liquid chromatography and other analytical instrument systems.
- Middleboro MA, US Carl Sims - Rohnert Park CA, US David Steckman - Oak Harbor WA, US Leanne Elson - Oak Harbor WA, US
International Classification:
B01D 63/08 B01D 69/10 B01D 19/00 B01D 63/00
Abstract:
A device which includes a pulse dampener and a degasser or de-bubbler. The device includes a fluid flow path and a fluid chamber located within the device. In addition, the device includes a pulse dampening membrane for dampening pulses in the fluid as it flows through the device. The device also includes a degassing membrane for degassing the fluid as it flows through the device, and/or a de-bubbling membrane for removing gas bubbles from the fluid as it flows through the device. The degassing or de-bubbling membrane can be separate and distinct from the dampening membrane. The de-bubbling membrane can be in addition to or in place of the degassing membrane in some embodiments.