Human P-selectin (P-selectin) Quantitative Detection Kit (ELISA) Instruction Manual [Reagent Kit Name] Human P-selectin (P-selectin) Quantitative Detection Kit (ELISA) [Kit Use] Quantitative detection of human serum , P-selectin content in plasma and related liquid samples. [Detection principle] This kit adopts double antibody one-step sandwich enzyme-linked immunosorbent assay (ELISA). Add the standard, the test sample and the enzyme-labeled working solution to the transparent enzyme-labeled plate pre-coated with human P-selectin (P-selectin) antibody. After incubating for a sufficient time, wash to remove unbound components. Add the developer A and B in turn. The developer (TMB) is converted into a blue product catalyzed by horseradish peroxidase (HRP), which turns yellow under the action of an acid. The concentration of P-selectin is positively correlated. The OD value is measured at a wavelength of 450 nm. Based on the OD value of the standard and the sample, the content of P-selectin in the sample is calculated. [Composition of the kit] 1 enzyme-labeled coating plate 12 wells × 8 strips 7 Developer A solution 6mL 2 Standard: 1600μg / L 0.6mL 8 Developer B solution 6mL 3 20-fold concentrated washing solution 25mL 9 Stop solution 6mL 4 Standard Diluting solution 6mL 10 Instructions 1 copy 5 Sample diluent 6mL 11 Sealing film 2 sheets 6 Enzyme labeling reagent 10mL 12 Sealed bag 1 Remarks: The standard product diluting solution is diluted in sequence as follows: 1600, 800, 400, 200, 100 , 50μg / L [reagents and equipment not needed] 1, 37 ℃ incubator 2, standard microplate reader 3, precision pipettes and disposable tips 4, distilled water 5, disposable test tubes 6, absorbent paper [Operation steps] 1. Preparation: Remove the reagent kit from the refrigerator, re-equilibrate at room temperature for 30 minutes. 2. Mixing solution: dilute the 20-fold concentrated washing solution with distilled water to the original one. 3. Add standard products and samples to be tested: take a sufficient number of enzyme-coated plates and fix them to the frame. Set up standard wells, sample wells to be tested and blank control wells, record the positions of each well in the standard wells. Add 50μL of the standard; add 10μL of the sample to be tested to the sample well, and then add 40μL of the sample diluent (that is, the sample is diluted 5 times); add 100μL of enzyme-labeled working solution to each well; no blank control well. 4. Incubation: Incubate in a 37 ° C water bath or thermostat for 60 minutes. 5. Wash the plate: discard the liquid, pat dry on the absorbent paper, fill each well with the washing liquid, let stand for 1min, shake off the washing liquid, pat dry on the absorbent paper, repeat the washing of the plate 5 times (you can also use the washing machine to press Instructions for washing the board). 6. Color development: add 50 μL of developer A solution to each well, then add 50 μL of developer B solution, and develop color at 37 ° C in the dark for 15 min. 7. Termination: Remove the enzyme labeling plate and add 50μL of stop solution to each well to stop the reaction (the color changes from blue to yellow). 8. Determination: Zero the blank holes, and within 15 minutes after termination, measure the absorbance (OD value) of each well with a wavelength of 450 nm. 9. Calculation: According to the concentration of the standard product and the corresponding OD value, calculate the linear regression equation of the standard curve, and then calculate the corresponding sample concentration on the regression equation according to the OD value of the sample. You can also use various application software to Calculation. The final concentration is the actual measured concentration times the dilution factor. [Sample requirements] 1. The sample must not contain sodium azide (NaN3), because sodium azide (NaN3) is an inhibitor of horseradish peroxidase (HRP). 2. The specimen should be extracted as soon as possible after collection. The extraction should be carried out according to relevant literature. The experiment should be carried out as soon as possible after extraction. If the test cannot be performed immediately, the specimen can be stored at -20 ℃, but repeated freezing and thawing should be avoided. 3. The sample should be fully centrifuged, without hemolysis and particles. [Notes] 1. The experiment is carried out in strict accordance with the instructions, and the result of the experiment must be determined by the reading of the microplate reader. 2. If the enzyme-labeled coated board is not used up after opening, it should be put into a sealed bag and added with desiccant immediately. 3. It is recommended that all standards, samples and blank controls be tested in duplicate, and the average value is taken to reduce the experimental error. 4. If the color is too light, the substrate incubation time can be extended properly. 5. In order to avoid cross-contamination, the standard, sample and blank control should be replaced with a tip for each additional one; the common components such as enzyme working solution, sample diluent and substrate should be added by cantilever, and should not touch the microwell ; Do not reuse the sealing film. 6. The kits are used within the warranty period, and different batches of reagents should not be mixed. 7. Substrate B is sensitive to light and avoid prolonged exposure to light. [Summary of operating procedures] Prepare reagents, samples and standards, add the prepared samples, standards and enzyme standard working solution, wash the plate 5 times at 37 ° C for 60 minutes, add color developing solutions A and B, and develop at 37 ° C for 15 minutes Calculate the OD value within 15 minutes after adding the stop solution. [Detection range] 50-1600μg / L [Specification] 96 servings / box [Storage] 2-8 ℃, protected from light and moisture. [Validity period] 6 months Shanghai Yuping Biological Technology Co., Ltd. mainly deals with ELISA kits of various brands and grades, with quality assurance and perfect after-sales service. And provide free generation testing. Serving universities and immunology research units. Technicians serve you better.
A training chair is a seat designed specifically for activities such as training and meetings. It has the characteristics of comfort, durability, and ease of movement, which can meet the needs of different groups of people. Training chairs can be classified into various categories based on material, structure, function, and other aspects. Below will be a brief introduction to the classification of training chairs.
1. Material classification
The materials of the training chair mainly include metal, plastic, and fabric. Metal training chairs typically have strong stability and durability, making them suitable for long-term meetings or training activities. The training chair made of plastic material has the characteristics of lightweight and easy to clean, making it easy to arrange the meeting site at any time and suitable for use in multifunctional halls and other places. The training chair made of fabric has a comfortable sitting experience and good breathability, making it suitable for long-term meetings or training activities.
2. Structural classification
The structure of training chairs mainly includes single chairs, linked chairs, and foldable chairs. Single chairs are the most common training chairs, with each seat being independent and adjustable as needed. Chainage refers to the connection of multiple seats together, usually in the form of one or more rows, suitable for use in large training venues. Stackable chairs are training chairs that can be folded and stacked, saving space and facilitating storage and handling.
3. Functional classification
The main functions of the training chair are adjustable, rotatable, foldable, and storable. The adjustable training chair can adjust the height and angle according to personal needs, providing a more comfortable sitting posture. The rotatable training chair can rotate 360 degrees, facilitating communication and interaction with people around it. The foldable training chair can be conveniently stored and transported, making it suitable for use in multifunctional halls and other places. The training chair that can store items is designed with storage space below or behind the chair, making it convenient to store items such as stationery and documents.
In summary, the classification of training chairs mainly includes material classification, structural classification, functional classification, etc. Choosing a suitable training chair can provide a better user experience and improve the effectiveness of training and meetings.
Meeting Chair,,Foldable Chair,Customized Chair
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