摘要:
A sample solution is sent into a concentration column through a three-way joint and a three-way switching valve to trap and concentrate the sample components on the concentration column, followed by injecting the sample solution into an injector by operating a first dilution solvent pump. When a large volume of the sample solution is to be sent or when the sample solution has a high solvent strength, trapping and concentration on the concentration column may be facilitated by replacing the sample solvent with a second dilution solvent by allowing the second dilution solvent to flow into the three-way joint after setting the flow rate of the second dilution solvent from a second dilution solvent vessel to a prescribed flow rate using a second dilution solvent pump.
摘要:
The present invention provides a device for improving detection sensitivity and a method for improving the detection sensitivity for use in a low flow velocity high performance liquid chromatographic apparatus. That is, the present invention is a diffusion promoting device connected at just before a separation column and having a function for improving detection sensitivity for use in a low flow velocity high performance liquid chromatographic apparatus.
摘要:
The present invention provides a packing for chromatography. Specifically, it provides a packing for chromatography in which a hydrophilic polymeric material is bound to the surface of a porous carrier, and a carbon chain is chemically bound inside the pore. By the use of the packing according to the present invention for analysis of low molecular weight compounds in a biological sample, a pretreatment such as removal of proteins etc. becomes unnecessary, and the biological sample can be directly analyzed.
摘要:
Device for improving detection sensitivity in low flow velocity high performance liquid chromatographic apparatus. Preferredly, diffusion promoting device connected at just before separation column and having function of improving detection sensitivity for use in low flow velocity high performance liquid chromatographic apparatus. Also, method for improving detection sensitivity in low flow velocity high performance liquid chromatographic apparatus.
摘要:
Device for improving detection sensitivity in low flow velocity high performance liquid chromatographic apparatus. Preferredly, diffusion promoting device connected at just before separation column and having function of improving detection sensitivity for use in low flow velocity high performance liquid chromatographic apparatus. Also, method for improving detection sensitivity in low flow velocity high performance liquid chromatographic apparatus.
摘要:
The present invention provides a device capable of simply formulating an arbitrary gradient pattern in a low flow gradient high performance liquid chromatography. That is, the present invention provides a split tubing apparatus for a gradient high performance liquid chromatography, which comprises a solvent inlet part, a split tubing part split into two or more plural tubes, and a solvent outlet part.
摘要:
An improved electronic apparatus such as a so-called electronic memo or data book is disclosed. In the apparatus, a numeric string such as a telephone number can be stored together with two kinds of character strings such as a person name and a company name. The apparatus has a memory for storing a portion of data displayed on a display, and the portion of data can used as a search key in the subsequent search operation. The apparatus allows a user to easily utilize the called results of either a sequential search or a direct search in a subsequent direct search and to change the mode to a sequential search at any desired point during execution of a direct search.
摘要:
In a hand held processing apparatus, there is a central processing unit (CPU) arranged to include a calculating mode for performing calculations and a memorandum pad mode for storing data and for reading the stored data in response to the operation of a reading key. The CPU can be changed to the memory pad mode by the operation of a reading key, so that the reading of the data of the memorandum is started with an easy operation.
摘要:
The present invention relates to an aqueous dispersion of a polymer composition comprising (A) a copolymer which comprises (a.sub.1) a unit derived from a vinyl monomer having a hydrolyzable silyl group and (a.sub.2) a unit derived from another vinyl monomer copolymerizable with (a.sub.1), and (B) a water-soluble polymer having an amineimide group. The aqueous dispersion of the present invention has good polymerization stability, mechanical stability and storage stability, and is useful in various applications such as coating materials, paints, adhesives, primers and binders.
摘要:
A small electronic apparatus such as an electronic organizer, electronic memo, etc. is disclosed which has a memory for storing data, and a communication unit for transmitting data stored in the memory to another electronic apparatus, and for receiving data from the other electronic apparatus. The apparatus selects, before transmitting at least one portion of said data, either of an add mode (transmitted data is added to data stored in the other electronic apparatus) and a update mode (data stored in the other electronic apparatus is replaced with the transmitted data). The apparatus has a signal unit for, when the add mode is selected, transmitting a first signal indicative that the add mode is selected to the other electronic apparatus, and for, when the update mode is selected, transmitting a second signal indicative that the update mode is selected to the other electronic apparatus. The apparatus displays data which has been transmitted when a data transmission error has occurred.