Thin layer chromatography spotting pin
A thin-layer chromatography and spotting needle technology, which is applied in measuring devices, instruments, scientific instruments, etc., can solve the problems of unstable spotting strength, affecting quality, and small spotting strength, so as to avoid unqualified spotting and ensure Accuracy, accurate spotting effect
Inactive Publication Date: 2014-12-03
SICHUAN FENGCHUN PHARMA
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Problems solved by technology
During the contact process, it is easy to puncture the coating on the thin-layer board due to excessive sample pointing force, causing the sample on the point to be uneven or even fall off with the punctured coating
If the spotting force is too small for fear of piercing the coated material, it is easy for the needle to not touch the thin-layer plate well, so that the sample on the needle cannot be completely transferred to the thin-layer plate.
Shaking hands during the sample pointing process is more likely to cause instability in the pointing force, making the spotting unqualified
These have seriously affected the quality of the sample, and finally caused the experimental results to be inaccurate
Method used
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[0014] Below in conjunction with accompanying drawing, the present invention is described in detail.
[0015] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0016] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0017] Such as figure 2 The TLC spotting needle of the present invention shown includes a needle tube 1 and a needle head 2, and one end of the needle tube 1 close to the needle head 2 is provided with a fixed sleeve 3, and the other end of the needle tube is provided with a movable sleeve 4, and the movable sleeve 4 is arranged at the other end of the needle tube. The sleeve 4 is slidingly matche...
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The invention discloses a thin layer chromatography spotting pin. The spotting pin comprises a pin tube and a pinhead, one end of the pin tube close to the pinhead is provided with a fixed tube sleeve, the other end of the pin tube is provided with a movably tube sleeve, the movable tube sleeve is in sliding fit with the pin tube, and the two adjacent ends of the movable tube sleeve and the fixed tube sleeve are connected through a plurality of springs. The thin layer chromatography spotting pin adopts the springs to connect the movable tube sleeve with the fixed tube sleeve, so the pressure of the pinhead to a thin layer plate can be easily adjusted and controlled, the problem of the puncture of coated subjects on the thin layer plate due to overlarge spotting strength or incomplete transition of samples onto the thin layer plate due to too small spotting strength is solved, and the spotting is accurate, thereby the accuracy of experiment results is guaranteed.
Description
technical field [0001] The invention relates to a chemical experiment instrument, in particular to a sampling needle. Background technique [0002] Thin layer chromatography is an important experimental technique in the fields of chemistry and medicine. When using thin-layer chromatography for semi-quantitative experimental analysis, a sampling needle is generally used for sampling. In practical applications, a micro-sampler is often used, such as a high-performance liquid chromatography sampling needle (such as figure 1 shown). [0003] When using this type of syringe for spotting, the needle tip needs to touch the TLC plate. During the contact process, it is easy to puncture the coating on the thin-layer board due to excessive sample pointing force, causing the sample on the point to be uneven or even fall off with the punctured coating. If the spotting force is too low for fear of piercing the coating, it is easy for the needle to fail to contact the thin-layer plate w...
Claims
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IPC IPC(8): G01N30/91
Inventor 钟茂团黎勇
Owner SICHUAN FENGCHUN PHARMA