Multifunctional needle type filter

A filter and multi-functional technology, applied in the field of laboratory consumables, can solve the problems of increased processing workload and inconvenience for experimenters, and achieve the effects of ingenious structural design, simplified experimental operation steps, and convenient use

Inactive Publication Date: 2013-05-08
INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, when processing samples in large quantities, it is necessary to weigh various types of adsorbents and mix them with the extraction solution to adsorb related interferences to achieve the purpose of purification, and then further absorb the extraction solution to remove pa

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Example Embodiment

[0017] The present invention will be further described below in conjunction with the drawings, but the present invention is not limited to the following embodiments.

[0018] Such as figure 1 As shown, a multifunctional needle filter provided by the present invention includes a microporous filter membrane a1, a purification adsorption layer 2 and a microporous filter membrane b3 that are sequentially stacked, wherein the microporous filter membrane a1 has a pore size of 0.45 μm, and the purification The weight of the filler of the adsorption layer 2 is 100 mg, and the pore size of the microporous filter membrane b3 is 0.45 μm; and the superimposed microporous filter membrane a1, the purification adsorption layer 2 and the microporous filter membrane b3 are sheathed in the tube of a syringe 4 In the cavity, the syringe 4 can be of various specifications ranging from 1 mL to 10 mL. The filter of this structure is suitable for filtering a relatively large amount of leachate; in the n...

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Abstract

The invention discloses a multifunctional needle type filter. The needle type filter comprises a micro-porous filtering film a, a purification adsorbing layer and a micro-porous filtering film b which are sequentially superposed, the pore diameter of the micro-porous filtering film a is 0.2-1.0mum, the weight of the filler in the purification adsorbing layer is 10-500mg, and the pore diameter of the micro-porous filtering film b is 0.2-1.0mum. The novel multifunctional needle type filter has the advantages of ingenious structure design, use convenience, simplification of the experiment operation steps, great improvement of the work efficiency, and full satisfying of a sample pretreatment requirement.

Description

technical field [0001] The invention relates to a laboratory consumable, in particular to a multifunctional needle filter. Background technique [0002] Globally, a large number of food, agricultural products, daily necessities, and environmental samples need to be analyzed for various chemical substances such as pesticides, veterinary drugs, additives, environmental pollutants, artificial pigments, and surfactants. Treatment mostly involves operations such as purification and filtration. Among them, the purification process part adopts relatively simple dispersive solid phase extraction technology, and first uses adsorbent to remove various interfering components in the components. The purified solution is then passed through a syringe filter for further analytical testing. Therefore, the needle filter is currently an indispensable common experimental consumable in the laboratory. It can remove large particle size particles, improve the purification effect, protect the in...

Claims

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Application Information

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IPC IPC(8): G01N1/34B01D15/00B01D61/18
Inventor 邱静柴婷婷杨曙明
Owner INST OF QUALITY STANDARD & TESTING TECH FOR AGRO PROD OF CAAS
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