| Description | ECL Universal Chemiluminescence Kit (Femto-grade) is a non-radioactive chemiluminescence system designed for detecting the activity of horseradish peroxidase (HRP) conjugated to proteins bound on PVDF or NC membranes. This product includes an enhanced luminol substrate and a stable peroxide solutionECL Universal Chemiluminescence Kit (Femto-grade) is a non-radioactive chemiluminescence system designed for detecting the activity of horseradish peroxidase (HRP) conjugated to proteins bound on PVDF or NC membranes. This product includes an enhanced luminol substrate and a stable peroxide solution, enabling the detection of trace amounts of protein as low as the femto-gram level. With a broad detection range and high sensitivity, it is suitable for most conventional Western Blot chemiluminescence detection applications.Component ListE1491293Component100 mL500 mLStorageE1491293AE-ECL Substrate50 mL250 mL2-8℃. Store in the dark.E1491293BE-ECL Oxidant50 mL250 mL2-8℃. Store in the dark. FeaturesHigh Sensitivity – Capable of rapidly detecting proteins at femto-gram levels, outperforming other high-end products in the same category.High Cost-Effectiveness – Offers exceptional value compared to other chemiluminescence substrates of similar grade.Instructions for UseRemove the transfer membrane from the washing buffer and drain excess liquid, ensuring the membrane remains moist.Mix E-ECL Substrate and E-ECL Oxidant in equal volumes to prepare the chemiluminescence working solution (approximately 0.1 mL per square centimeter of membrane).Evenly apply the chemiluminescence working solution onto the membrane and incubate for 1–2 minutes. For highly abundant target proteins, avoid letting the working solution remain stationary. Instead, place the membrane on a shaker for 1–2 minutes to prevent localized depletion of reactants, which may affect the linear range of detection signals.Remove the membrane and drain excess working solution. Wrap the membrane in a transparent protective cover.X-ray Film Exposure: In a darkroom, expose the membrane to X-ray film. Exposure times may range from a few seconds to several minutes. Develop the film and, if necessary, adjust the exposure time for a second exposure based on the initial results.CCD Imager: The membrane can be directly imaged without a protective cover. Follow the instrument’s instructions for imaging.The membrane can be stripped and reused for multiple hybridizations.PrecautionsAvoid strong light exposure to E-ECL Substrate and the working solution, as it may reduce sensitivity.Due to the high sensitivity of the ECL solution, avoid using excessively high antibody concentrations to prevent increased background signals.Sodium azide (NaN₃) inhibits HRP activity. Avoid using NaN₃ for the storage or recycling of secondary antibodies.For safety and health reasons, wear lab coats and disposable gloves during operation.This product is intended for research use only... Read More | When apoptosis occurs, some DNA endonucleases will be activated. These endonucleases will cut off genomic DNA between nucleosomes and produce 180 bp-200 BP DNA fragments, which appear as a specific ladder pattern in agarose gel electrophoresis. When double strand or single strand breaks occurWhen apoptosis occurs, some DNA endonucleases will be activated. These endonucleases will cut off genomic DNA between nucleosomes and produce 180 bp-200 BP DNA fragments, which appear as a specific ladder pattern in agarose gel electrophoresis. When double strand or single strand breaks occur in genomic DNA, a large number of sticky 3'-oh ends will be generated, which can interact with YF under the catalysis of deoxyribonucleotide terminal transferase (TDT) ®/ CY dUTP binding can directly detect apoptotic cells by fluorescence microscopy or flow cytometry. This kind of method is called terminal deoxynucleotidyl transferase mediated nick end labeling (TUNEL). Because normal or proliferating cells have almost no DNA breaks, there is no 3'-oh formation and they can rarely be stained. TUNEL method can stain intact single apoptotic nuclei or apoptotic bodies in situ, can accurately reflect the typical biochemical and morphological characteristics of apoptosis, and can detect a very small number of apoptotic cells, so it is widely used in the study of apoptosis. This kit has a wide range of applications and can be used to detect apoptosis in frozen or paraffin sections, as well as cultured adherent cells or suspended cells. It can selectively detect apoptotic cells, but not necrotic cells or cells with DNA strand breaks caused by irradiation and drug treatment. This kit detects cell apoptosis with a short time-consuming, one-step staining reaction and can be detected after washing.Product parameters：555/565 nmComponent： Instruction： Experimental materials (self provided)PBS buffer (1 x, pH~7.4). 0.2% Triton X -100 (PBS formulation). 0.1% Triton X -100 (PBS formulation, containing 5 mg/mLBSA)4% paraformaldehyde (prepared with PBS)Immunohistochemical penDewaxing solvent (paraffin section sample)Related reagents for paraffin section processingAnti fluorescence quenching and sealing agent. ddH2Oexperimental design. A. Positive control:Prepare positive control slides using DNaseI treatment. DNaseI can digest single or double stranded DNA and expose the 3 '- OH end, artificially causing cell apoptosis. One experiment per time is sufficient. (To verify if there are any issues with the experimental operation and reagent kit)B. Negative control:Use TUNEL Reaction Buffer without TdT Enzyme and replace TdT Enzyme with ddH2O. (Mainly to exclude non-specific staining caused by cell apoptosis, operational processes, and other reasons; and to adjust the exposure intensity of the shooting.)C. Experimental processing group.The experimental group operated normally according to the instructions.D. Experimental control group.The experimental group operated normally according to the instructions.Experimental steps1. Sample preparation:(1) For adherent cells or cell smearsa. Clean once with PBS.Note: If you are concerned that the cells on the cell smear may not adhere firmly, you can dry the sample to make the cells adhere more firmly.b. Fixation: Add an appropriate amount of 4% paraformaldehyde (prepared with PBS) and fix at 4 ℃ for 30 minutes. Clean twice with PBS.c. Translucency: Add an appropriate amount of 0.2% Triton X -100 (prepared with PBS) and let it penetrate at room temperature for 20 minutes. Clean twice with PBS.d. Step 2: TUNEL reaction.(2) For suspended cells or cell suspensionsa. Collect cells (3-5 x 106 cells), centrifuge at 1000 rpm for 5 minutes, and wash twice with PBS.b. Fixation: Add an appropriate amount of 4% paraformaldehyde (prepared with PBS) and resuspend the cells thoroughly. Fix at 4 ℃ for 30 minutes. Centrifuge at 2000 rpm for 5 minutes and clean twice with PBS.c. Translucency: Add an appropriate amount of 0.2% Triton X -100 (prepared with PBS) and let it penetrate at room temperature for 20 minutes. Centrifuge at 2000 rpm for 5 minutes and clean twice with PBS.d. Step 2: TUNEL reaction.(3) Paraffin tissue sectioninga. Dewaxing and hydration: Place the sliced samples sequentially in xylene I (10 min) → xylene II (10 min) → 100% ethanol I (5 min) → 100% ethanol II (5 min) → 95% ethanol (5 min) → 90% ethanol (5 min) → 80% ethanol (5 min) → 70% ethanol (5 min) → ddH2O rinse for 5 min, rinse twice.Note: Xylene is toxic and volatile. Please perform this operation in a fume hood.b. Use filter paper to dry the liquid around the sliced sample, and circle the sample contour with an immunohistochemical pen for downstream transparency and labeling.Note: If it is found that the contour circle of immunohistochemistry strokes is damaged in subsequent experimental operations, it needs to be redrawn in a timely manner.c. Transparency: Dilute 2 mg/mL of ProteinaseK solution with PBS in a ratio of 1:100 to a final concentration of 20 µ g/mL. Add 100 µ L dropwise to each sample to cover all sample areas. Incubate at 20-37 ℃ for 20 minutes.Note: Protein K can penetrate the cell membrane and nuclear membrane, allowing subsequent staining reagents to fully enter the nucleus for reaction and improve labeling efficiency. An excessively long incubation time increases the risk of tissue slices falling off the carrier film during subsequent washing steps, while a too short incubation time may result in insufficient permeability treatment and affect labeling efficiency. To obtain better results, the concentration, incubation time, and temperature of Protein K need to be optimized according to different types of tissue samples.d. Wash the slices twice with PBS, each time for 5 minutes. Use filter paper to remove excess liquid, and place the processed sample in a wet box to keep it moist.Note: Protein K must be washed thoroughly in this step, otherwise it will seriously interfere with subsequent labeling reactions.e. Step 2: TUNEL reaction.(4) Frozen tissue sectionsa. Fixation: Take out frozen sections and warm them back to room temperature. Add an appropriate amount of 4% paraformaldehyde (prepared with PBS) and fix at room temperature for 30 minutes. Wash twice with PBS for 10 minutes each time.Note: If you are concerned that formaldehyde cleaning may not be clean enough, it may affect the final dyeing effect. After formaldehyde fixation is completed, an appropriate amount of 2 mg/mL glycine can be added and washed for 10 minutes to neutralize the residual fixing solution, and then PBS cleaning can be carried out.b. Use filter paper to dry the liquid around the sliced sample, and circle the sample contour with an immunohistochemical pen for downstream transparency and labeling.Note: If it is found that the contour circle of immunohistochemistry strokes is damaged in subsequent experimental operations, it needs to be redrawn in a timely manner.c. Transparency: Dilute 2 mg/mL of ProteinaseK solution with PBS in a ratio of 1:100 to a final concentration of 20 µ g/mL. Add 100 µ L dropwise to each sample to cover all sample areas. Incubate at 20-37 ℃ for 20 minutes.Note: Protein K can penetrate the cell membrane and nuclear membrane, allowing subsequent staining reagents to fully enter the nucleus for reaction and improve labeling efficiency. An excessively long incubation time increases the risk of tissue slices falling off the carrier film during subsequent washing steps, while a too short incubation time may result in insufficient permeability treatment and affect labeling efficiency. To obtain better results, the concentration, incubation time, and temperature of Protein K need to be optimized according to different types of tissue samples.d. Wash the slices twice with PBS, each time for 5 minutes. Use filter paper to remove excess liquid, and place the processed sample in a wet box to keep it moist.Note: Protein K must be washed thoroughly in this step, otherwise it will seriously interfere with subsequent labeling reactions.e. Step 2: TUNEL reaction.(5) Positive treatment (only the positive control is subjected to this step, and other samples are directly subjected to the TUNEL reaction step)a. Dilute 10 x DNase I Buffer with ddH2O in a ratio of 1:10 to 1 x DNase I Buffer for later use.b. Drip 100 µ L of 1xDNase I Buffer onto the processed sample, covering all sample areas, and equilibrate at room temperature for 5 minutes.c. Dilute DNase I (2 U) with 1 x DNase I Buffer at a ratio of 1:100/ µ L) A working solution with a final concentration of 20 U/mL.d. Discard the buffer and add 100 µ Incubate DNase I working solution with a concentration of 20 U/mL at room temperature for 10 minutes.e. Discard DNase I working solution and clean twice with PBS.f. Step 2: TUNEL reaction.2. TUNEL reaction(1) Prepare TUNEL reaction solution (ready to use):/1 sample5 sample10 sampleTdT enzyme1 µL5 µL10 µLYF®488/555/594/640 TUNEL Reaction Buffer49 µL245 µL490 µLTUNEL Total volume of reaction solution50 µL250 µL500 µL(2) For adherent cells, cell smears, or tissue sectionsa. Add 50 to each sample µ L TUNEL reaction solution, evenly cover the sample with the reaction solution. The appropriate time for dark incubation at 37 ℃ (recommended staining time for cells is 30 minutes to 1 hour, and tissue staining time is 2 hours).Note: 50 µ L TUNEL reaction solution is suitable for smear, slicing, or 96 well plates (other different well plates can adjust the volume of TUNEL reaction solution appropriately to cover cells). If the sample to be tested is a smear, slice, or in a 24 well plate, 12 well plate, or 6 well plate, anti evaporation film can be used, or self sealing bags or other appropriate materials can be used to cut circular plastic sheets slightly smaller than the holes. After adding TUNEL reaction solution dropwise, cover the sample to prevent the evaporation of TUNEL reaction solution and make the TUNEL reaction solution evenly cover the sample.b. Discard the TUNEL reaction solution, wash twice with PBS, and then wash three times with 0.1% Triton X -100 (PBS preparation, containing 5 mg/mL BSA) for 5 minutes each time. This way, free unreacted markers can be removed cleanly.c. (Optional) Add an appropriate concentration of 5 to each sample µ DAPI staining solution with a concentration of g/mL, incubated at room temperature in dark for 5 minutes. After staining, discard DAPI staining solution and wash twice with PBS for 5 minutes each time.d. (Optional) Slice sealing: Add 50 drops to each sample µ L anti fluorescence quenching sealing agent (anti fluorescence quenching sealing agent may not be suitable for certain dyes, it is recommended to conduct pre experimental testing for compatibility before the experiment), cover the cover glass, gently tap the cover glass with the blunt end of tweezers to remove bubbles and ensure complete sealing.e. Use filter paper to remove excess liquid and add 100 to the sample area µ Keep the sample moist with PBS and immediately observe under a fluorescence microscope.(3) For suspended cells or cell suspensionsa. Add 50 to each sample tube µ Gently resuspend cells in LTUNEL reaction solution and incubate at 37 ℃ in the dark for 30-1 hour. Gently resuspend cells with a micropipette every 15 minutes.b. Centrifuge at 2000 rpm for 5 minutes, discard TUNEL reaction solution, and wash twice with 0.1% Triton X -100 (PBS preparation, containing 5 mg/mLBSA) for 5 minutes each time. This way, free unreacted markers can be removed cleanly.c. Add 100 to each sample tube µ L concentration is 5 µ DAPI staining solution with a concentration of g/mL, incubated at room temperature in dark for 5 minutes.d. Join 400 µ L PBS resuspended cells and immediately detected with a flow cytometer or observed under a fluorescence microscope after smearing.Matters needing attention：1. please centrifuge the product to the bottom of the tube immediately before use, and then conduct subsequent experiments. 2. when the staining background is heavy or non-specific staining is obvious, the staining time can be appropriately reduced. 3. it is recommended to add negative control and positive control groups during the experiment. 4. please wear mask and gloves when using component A. if it contacts the skin, please wash it with plenty of water immediately. 5. fluorescent dyes have quenching problems. Please try to avoid light to slow down fluorescence quenching. 6. for your safety and health, please wear experimental clothes and disposable gloves.Scope of application：Late apoptosis detection, TUNEL Kit... Read More | The content of this cell is too long for an XLSX file (more than 32767 characters). Please use the CSV format for this export | This kit combines efficient guanidine isothiocyanate lysis technology with silicon matrix membrane purification technology to efficiently extract total RNA from animal cells and tissues. The starting sample usually has a maximum of 30 mg of tissue or 1 x 107 cells. This reagent kit can also recover This kit combines efficient guanidine isothiocyanate lysis technology with silicon matrix membrane purification technology to efficiently extract total RNA from animal cells and tissues. The starting sample usually has a maximum of 30 mg of tissue or 1 x 107 cells. This reagent kit can also recover partially purified RNA, RNA obtained from in vitro transcription and enzymatic reactions. This reagent kit can extract and purify high-quality RNA with a molecular weight greater than 200 bases, with almost no DNA residue. If RNA experiments are to be conducted that are highly sensitive to trace amounts of DNA, residual DNA can be digested and removed on a column using DNase I without RNase. The extracted RNA can be used for downstream experiments such as RT-PCR, Northern Blot, Dot Blot, etc. R666020Component50 TStorageR666020ABuffer RL35 mLRTR666020BBuffer RW140 mLRTR666020CBuffer RW2 (concentrate)11 mLRTR666020DRNase-Free Water10 mLRTR666020ESpin Columns RM with Collection Tubes50 setsRTR666020FRNase-Free Centrifuge Tubes (1.5 mL)50 EART Self prepared reagents: β- Mercaptoethanol, anhydrous ethanol (newly opened or dedicated for RNA extraction).Preparation and important precautions before the experimentTo prevent RNase pollution, attention should be paid to the following aspects:1) Use RNase free plastic products and gun heads to avoid cross contamination.2) Glassware should be dry baked at a high temperature of 180 ℃ for 4 hours before use, while plastic containers can be soaked in 0.5 M NaOH for 10 minutes, thoroughly rinsed with water, and then sterilized under high pressure.3) Prepare the solution using water without RNase.4) Operators should wear disposable masks and gloves, and change gloves frequently during the experiment.2. The extracted samples should avoid repeated freeze-thaw cycles, otherwise it will affect the quantity and quality of RNA extraction.3. Before use, please check if there is any crystallization or precipitation in the Buffer RL. It can be heated at 56 ℃ and re solved. Please add Buffer RL before use β- Mercaptoethanol, with a final concentration of 1%. Add 10 to 1ml Buffer RL µ L β- Mercaptoethanol. join β- The buffer RL room temperature of mercaptoethanol can be stored for one month.4. Before the first use, anhydrous ethanol should be added to Buffer RW2 according to the instructions on the reagent bottle label.5. All centrifugation steps should be carried out at room temperature unless otherwise specified, and all operation steps should be carried out quickly.6. If downstream experiments are highly sensitive to DNA, it is recommended to treat RNA with DNase I that does not contain RNase.Operation steps1. Sample processing1a organization: Grind the organization in liquid nitrogen. Add 600 to every 20-30 mg of tissue µ L Buffer RL (check if it is added before use) β- Mercaptoethanol), tissue sample less than 20 mg plus 350 µ Buffer RL. The sample volume shall not exceed one tenth of the buffer RL volume.1b Single layer culture of cells: The cells are directly lysed or processed into cell suspensions in a culture bottle, centrifuged to obtain cell precipitates, and the supernatant is discarded. 600 is added every 6-10 cm2 of culture area µ Buffer RL, less than 6 cm2, add 350 µ Blow buffer RL several times to fully crack it.1c cell suspension: Centrifuge at 12000 rpm (~13400 × g) for 1 minute to discard the supernatant and obtain cell precipitate. Add 600 cells every 5 × 106-1 × 107 cells µ Buffer RL, less than 5 × 106 cells added to 350 µ Blow buffer RL several times to fully crack it.Attention:1) Try to eliminate the cell culture medium as much as possible, as it may inhibit cell lysis and affect RNA production.2) Try to fully suspend and lyse the cells, otherwise it will affect RNA production.2. After the sample is fully lysed, it should be left at room temperature for 5 minutes to completely separate the protein nucleic acid complex.3. Centrifuge at 2000rpm for 2-5 minutes, take the supernatant and proceed to the next step.4. Add 1 volume (600) µ L or 350 µ l) Mix 70% ethanol (prepared without RNase water) well.Attention: Adding ethanol may cause precipitation and will not affect subsequent experiments.5. Add all the solution obtained in step 4 to the Spin Columns RM that has been loaded into the collection tube. If it is not possible to add all the solution to the adsorption column at once, please transfer it in two batches, centrifuge at 12000 rpm for 1 minute, discard the waste liquid in the collection tube, and place the adsorption column in the collection tube. Attention: The maximum loading capacity of the adsorption column is 100 µ g, do not overload, otherwise it will affect the yield and purity of RNA.6. Add 700 to the adsorption column µ Centrifuge at 12000 rpm for 1 minute, discard the waste liquid from the collection tube, and place the adsorption column in the collection tube.Optional steps: If conducting RNA experiments that are highly sensitive to trace amounts of DNA, replace step 6 with the following steps.1) Add 350 to the adsorption column µ L Buffer RW1, centrifuge at 12000 rpm for 15 seconds, discard the waste liquid, and place the adsorption column back into the recovery manifold.2) Preparation of DNase I mixture: Take 52 µ Add 8 RNase Free Water to it µ 10 x Reaction Buffer and 20 µ DNase I (1 U/ µ l) Mix well and prepare to a final volume of 80 µ The reaction solution of L.Attention: The above system is configured according to our company's DNase I reaction system. Please refer to the corresponding manual for other company products.3) Add 80 µ l of the prepared DNase I reaction solution directly to the adsorption column and incubate at 20-30 ℃ for 15 minutes.4) Add 350 to the adsorption column µ L Buffer RW1, centrifuge at 12000 rpm for 15 seconds, discard the waste liquid, and place the adsorption column back into the recovery manifold.7. Add 500 to the adsorption column µ Buffer RW2 (check if anhydrous ethanol is added before use), centrifuge at 12000 rpm for 1 minute, discard the waste liquid in the collection tube, and place the adsorption column in the collection tube.8. Repeat step 7. 9. Centrifuge at 12000 rpm for 2 minutes and discard the waste liquid from the collection tube. Place the adsorption column at room temperature for a few minutes to thoroughly air dry.Note: The purpose of this step is to remove residual ethanol from the adsorption column, which can affect subsequent enzymatic reactions (such as enzyme digestion, PCR, etc.).10. Place the adsorption column in a new RNase free centrifuge tube, and add 30-50 to the middle of the adsorption column in the air µ Place RNase Free Water at room temperature for 1 minute, centrifuge at 12000 rpm for 1 minute, collect RNA solution, and store RNA at -70 ℃ to prevent degradation.Attention:1) The volume of RNase Free Water should not be less than 30 µ l. Small volume affects the recovery rate.2) If you want to increase RNA production, you can use 30-50 µ Repeat step 10 for the new RNase Free Water.3) If you want to increase the RNA concentration, you can add the obtained solution back to the adsorption column and repeat step 10... Read More | This reagent kit uses an adsorption column that can specifically bind to viral RNA and a unique buffer system, suitable for isolating viral RNA from cell-free body fluids such as serum, plasma, urine, cerebrospinal fluid, and cell culture supernatants. The viral RNA specifically binds to the siliconThis reagent kit uses an adsorption column that can specifically bind to viral RNA and a unique buffer system, suitable for isolating viral RNA from cell-free body fluids such as serum, plasma, urine, cerebrospinal fluid, and cell culture supernatants. The viral RNA specifically binds to the silicon substrate membrane, and pollutants flow through the membrane. Completely remove impurities such as proteins through two efficient washes, and then wash high-purity viral RNA with RNase free water or RNase Free Water provided by the reagent kit. The virus RNA extracted by this kit can be directly used for experiments such as RT-PCR, Real time RT-PCR, and Western blot analysis. R666005Component50 TStorageR666005ABuffer GL15 mLRTR666005BBuffer RW140 mLRTR666005CBuffer RW2（concentrate）11 mLRTR666005DProteinase K12.5 mgRTR666005EProteinase K Storage Buffer1.25 mLRTR666005FRNase-Free Water10 mLRTR666005GSpin Columns RS with Collection Tubes50 setsRTR666005HRNase-Free Centrifuge Tubes（1.5 mL）50 EART Self prepared reagent: anhydrous ethanol, 0.9% NaCl.Preparation and important precautions before the experiment1. Add 1.25 ml of Protein K Storage Buffer to Protein K to dissolve it and store at -20 ℃. The prepared Protein K should not be left at room temperature for a long time to avoid repeated freeze-thaw cycles, which may affect its activity.2. To prevent RNase pollution, attention should be paid to the following aspects:1) Use RNase free plastic products and gun heads to avoid cross contamination.2) Glassware should be dry baked at a high temperature of 180 ℃ for 4 hours before use, while plastic containers can be soaked in 0.5 M NaOH for 10 minutes, thoroughly rinsed with water, and then sterilized under high pressure.3) Prepare the solution using water without RNase.4) Operators should wear disposable masks and gloves, and change gloves frequently during the experiment.3. Serum or plasma should avoid repeated freeze-thaw cycles that may cause protein denaturation or precipitation, reduce viral titers, and thus affect the yield of extracted viral nucleic acids.4. Before the first use, anhydrous ethanol should be added to Buffer RW2 according to the instructions on the reagent bottle label.5. If buffer GL precipitates, it can be heated at 56 ℃ to dissolve and then placed at room temperature.6. All centrifugation steps should be carried out at room temperature unless otherwise specified, and all operation steps should be carried out quickly.Operation steps1. Take 200 at room temperature µ Add serum or plasma to a 1.5 ml centrifuge tube (self provided). Attention: Less than 200 µ 0.9% NaCl (provided by the customer) can be added to make up for it.2. Add 20 to the solution in the previous step µ Protein K, mix well.3. Add 200 µ L Buffer GL, vortex oscillation for 15 seconds. Note: Do not directly add Protein K to Buffer GL. 4. Incubate at 56 ℃ for 15 minutes, briefly centrifuge, and collect the solution on the tube wall to the bottom of the tube.5. Add 250 µ Anhydrous ethanol, vortex for 15 seconds, incubate at room temperature for 5 minutes, briefly centrifuge, and collect the solution from the tube wall to the bottom of the tube.6. Add all the solution obtained in step 5 to the Spin Columns RS that have been loaded into the collection tube. If it is not possible to add all the solution to the adsorption column at once, please transfer it in two batches, centrifuge at 12000 rpm (~13400 × g) for 1 minute, discard the waste liquid in the collection tube, and put the adsorption column back into the collection tube.7. Add 500 to the adsorption column µ Centrifuge at 12000 rpm for 1 minute, discard the waste liquid from the collection tube, and place the adsorption column back into the collection tube.8. Add 500 to the adsorption column µ Buffer RW2 (check if anhydrous ethanol is added before use), centrifuge at 12000 rpm for 1 minute, discard the waste liquid in the collection tube, and place the adsorption column back into the collection tube.9. Add 500 to the adsorption column µ Centrifuge anhydrous ethanol at 12000 rpm for 1 minute, discard the waste liquid from the collection tube, and place the adsorption column back into the collection tube. 10. Centrifuge at 12000 rpm for 3 minutes and discard the waste liquid from the collection tube. Place the adsorption column at room temperature for a few minutes to thoroughly air dry.Attention:1) The purpose of this step is to remove residual ethanol from the adsorption column, which will affect subsequent enzymatic reactions (such as enzyme digestion, PCR, etc.).2) Recommended steps: Place the adsorption column into a new 1.5 ml centrifuge tube (provided), open the tube cover, and incubate in a 56 ℃ oven for 3 minutes to thoroughly dry the membrane of the adsorption column.11. Place the adsorption column in a new RNase free centrifuge tube and add 20-50 to the middle of the adsorption column in the air µ Place RNase Free Water at room temperature for 5 minutes, centrifuge at 12000 rpm for 1 minute, collect RNA solution, and store RNA at -70 ℃ to prevent degradation.Attention:1) The volume of RNase Free Water should not be less than 20 µ l. Small volume affects the recovery rate.2) If you want to increase RNA production, you can use 20-50 µ Repeat step 11 for the new RNase Free Water.3) If you want to increase the RNA concentration, you can add the obtained solution back to the adsorption column and repeat step 11... Read More |