摘要:
A pigment particle for use in artist color media comprises a silica containing core particle having pore channels formed therein, at least one colorant present in the pore channels in at least part of the silica particle, and a nonporous silica layer coated over the pore channels. A method of manufacturing colored particles for use in artist color media comprises providing a core silica particle having pore channels formed therein, loading at least one colorant into the pore channels of the particle, and depositing a silica layer over the pore channels using fluorosilicic acid. Another method of manufacturing colored particles for use in artist color media comprises providing a porous silica particle having pore channels formed therein, and depositing a silica layer over the pore channels using a fluorosilicic acid where a colorant is present in the fluorosilicic acid.
摘要:
A sleeve unit for preparing a sample for gas chromatographic analysis comprises an inlet liner having a bore therein, an inlet to the bore, and an outlet from the bore, and an inlet liner insert located with the bore. The inlet liner insert extends across the bore to cause a sample being prepared for gas chromatographic analysis to flow through the inlet liner insert. The inlet liner insert comprises an arrangement of wire, the arrangement creating a restricted pathway for the sample as the sample flows through the bore of the inlet liner to the outlet of the bore, and the wire having a surface having a high thermal conductivity and being substantially chemically inert to the sample.
摘要:
A container used for chromatographic sample analysis has (a) at least one silica uppermost layer, which is deposited onto the container using a liquid phase deposition process, and, optionally, (b) at least one indicator present in at least part of the at least one silica uppermost layer for visually distinguishing the container from other containers, and/or determining the “use status” of the container, and/or identifying the proper orientation of the container when it is to be put in use, and/or providing a means of decoration, identification, or counterfeit detection. In one preferred embodiment, the indicator is thermochromic. In another preferred embodiment, the indicator is photochromic.
摘要:
A gas chromatography inlet liner comprises a glass tube formed by a glass wall, the glass wall having pore channels formed therein, and an indicator present in the pore channels in at least part of the inlet liner. The indicator may be any element, compound, dopant, or mixture additive that modifies color or transparency of the inlet liner.
摘要:
An acoustic displacement flowmeter for determining flow rate of a fluid has a fluid flow line defining a flow path for the fluid. The fluid flow line has an inlet and an outlet. A controllable valve is positioned along the fluid flow line for opening and closing the flow path as desired, and an acoustic displacement transducer having a fluid port is coupled to the fluid flow line upstream from the controllable valve. The outlet of the fluid flow line extends through a wall isolating fluid exhausted from the outlet of the fluid flow line from electrical and/or mechanical components residing inside the flowmeter, thereby preventing the exhausted fluid, if explosive, from contacting such electrical and/or mechanical components which may act as potential ignition sources. Preferably, a manifold having a rigid body is provided in which the fluid flow line is formed. An acoustic displacement transducer (ADT) chamber wall is formed on the manifold body, and has an ADT chamber inlet port formed therein, and the fluid flow line has a branched portion connecting the fluid flow line to the ADT chamber inlet port. The outlet of the fluid flow line extends through a wall formed in the manifold body to isolate fluid exhausted from the outlet of the fluid flow line from electrical and/or mechanical components residing inside the flowmeter.
摘要:
An automated capillary zone electrophoretic system is disclosed. The system employs a capillary cartridge having a plurality of capillary tubes. The cartridge has a first array of capillary ends projecting from one side of a plate. The first array of capillary ends are spaced apart in substantially the same manner as the wells of a microtitre tray of standard size. This allows one to simultaneously perform capillary electrophoresis on samples present in each of the wells of the tray. The system includes a stacked, dual carrousel arrangement to eliminate cross-contamination resulting from reuse of the same buffer tray on consecutive executions from electrophoresis. The system also has a container connected to the detection end of the capillaries. The container is provided with valving which facilitate cleaning the capillaries, loading buffer into the capillaries, introducing samples to be electrophoresced into the capillaries, and performing capillary zone electrophoresis on the thus introduced samples.
摘要:
An automated electrophoretic system is disclosed. The system employs a capillary cartridge having a plurality of capillary tubes. The cartridge has a first array of capillary ends projecting from one side of a plate. The first array of capillary ends are spaced apart in substantially the same manner as the wells of a microtitre tray of standard size. This allows one to simultaneously perform capillary electrophoresis on samples present in each of the wells of the tray. The system includes a stacked, dual carrousel arrangement to eliminate cross-contamination resulting from reuse of the same buffer tray on consecutive executions from electrophoresis. The system also has a gel delivery module containing a gel syringe/a stepper motor or a high pressure chamber with a pump to quickly and uniformly deliver gel through the capillary tubes. The system further includes a multi-wavelength beam generator to generate a laser beam which produces a beam with a wide range of wavelengths. An off-line capillary reconditioner thoroughly cleans a capillary cartridge to enable simultaneous execution of electrophoresis with another capillary cartridge. The streamlined nature of the off-line capillary reconditioner offers the advantage of increased system throughput with a minimal increase in system cost.
摘要:
An automated capillary zone electrophoretic system is disclosed. The system employs a capillary cartridge having a plurality of capillary tubes. The cartridge has a first array of capillary ends projecting from one side of a plate. The first array of capillary ends are spaced apart in substantially the same manner as the wells of a microtitre tray of standard size. This allows one to simultaneously perform capillary electrophoresis on samples present in each of the wells of the tray. The system includes a stacked, dual carrousel arrangement to eliminate cross-contamination resulting from reuse of the same buffer tray on consecutive executions from electrophoresis. The system also has a container connected to the detection end of the capillaries. The container is provided with valving which facilitate cleaning the capillaries, loading buffer into the capillaries, introducing samples to be electrophoresced into the capillaries, and performing capillary zone electrophoresis on the thus introduced samples.
摘要:
Microtitre trays and their spill-resistant open lids prevent cross contamination of samples and also accommodate fragile and flexible probes of automated biological sample analysis systems. The open-lids can be in the form of sleeves located on the top sides of each well of microtitre trays. In one version, one microtitre tray with its bottom sections severed is stacked on top of another microtitre tray to provide the open-lids. A cutting tool is also provided to sever the bottom sections of each well from microtitre trays. The cutting tool includes a lever, a blade and a clamping device.
摘要:
An acoustic displacement flowmeter for determining flow rate of a fluid has a fluid flow line defining a flow path for the fluid. The fluid flow line has an inlet and an outlet. A controllable valve is positioned along the fluid flow line for opening and closing the flow path as desired, and an acoustic displacement transducer having a fluid port is coupled to the fluid flow line upstream from the controllable valve. The outlet of the fluid flow line extends through a wall isolating fluid exhausted from the outlet of the fluid flow line from electrical and/or mechanical components residing inside the flowmeter, thereby preventing the exhausted fluid, if explosive, from contacting such electrical and/or mechanical components which may act as potential ignition sources. Preferably, a manifold having a rigid body is provided in which the fluid flow line is formed. An acoustic displacement transducer (ADT) chamber wall is formed on the manifold body, and has an ADT chamber inlet port formed therein, and the fluid flow line has a branched portion connecting the fluid flow line to the ADT chamber inlet port. The outlet of the fluid flow line extends through a wall formed in the manifold body to isolate fluid exhausted from the outlet of the fluid flow line from electrical and/or mechanical components residing inside the flowmeter.