| Description | This reagent kit is suitable for simultaneously isolating and purifying genomic DNA, total RNA, and total protein from the same cell or tissue sample. This product does not require dividing the sample into three parts to extract DNA, RNA, and protein separately, nor does it require dividing the This reagent kit is suitable for simultaneously isolating and purifying genomic DNA, total RNA, and total protein from the same cell or tissue sample. This product does not require dividing the sample into three parts to extract DNA, RNA, and protein separately, nor does it require dividing the purified total nucleic acid into two parts before purifying DNA and RNA separately. Therefore, it can maximize the recovery of DNA, RNA, and protein, and can be used for the purification of nucleic acid and protein in small and rare samples. The purified DNA, RNA, and protein can be eluted separately and directly applied to various downstream molecular biology operations. This reagent kit does not contain toxic substances such as phenol and chloroform, and does not require ethanol precipitation. The operation is simple and fast. The extracted genomic DNA can be used for PCR, Real time PCR, SouthBlot, Dot Blot, comparative genomic hybridization (CGH), gene analysis, and SNP analysis; Total RNA can be applied in experiments such as RT-PCR, cDNA synthesis, Northern Blot, Dot Blot, and gene chips; Total protein can be applied in electrophoresis and Western Blot, among others. A665492 Component 50 T Storage A665492A Buffer RL 35 mL RT A665492B Buffer RW1 40 mL RT A665492C Buffer RW2 (concentrate) 11 mL RT A665492D RNase-Free Water 10 mL RT A665492E Buffer GW1 (concentrate) 13 mL RT A665492F Buffer GW2 (concentrate) 15 mL RT A665492G Buffer GE 15 mL RT A665492H Buffer PZ 60 mL RT A665492I Buffer PLS 15 mL RT A665492J Spin Columns DM with Collection Tubes 50 sets RT A665492K Spin Columns RM with Collection Tubes 50 sets RT A665492L Collection Tubes 100 EA RT A665492M RNase-Free Centrifuge Tubes (1.5 mL) 100 EA RTSelf prepared reagents:β- Mercaptoethanol (for newly opened or RNA extraction), 70% ethanol (prepared with water without RNase), and anhydrous ethanol.Preparation and important precautions before the experiment:To prevent RNase pollution, attention should be paid to the following aspects:1) Use plastic products and gun heads without RNase 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) The solution should be prepared using water without RNase.4) Operators should wear disposable masks and gloves, and change gloves frequently during the experiment.2. The sample should avoid repeated freeze-thaw cycles, otherwise it will affect the quality of DNA, RNA, and protein extraction. The sample can be stored in Buffer RL at -70 ℃ for one month.3. Please add Buffer RL before use β- Mercaptoethanol, 1 ml Buffer RL with 10 µ L β- Mercaptoethanol. join β- The buffer RL room temperature of mercaptoethanol can be stored for one month.Before the first use, anhydrous ethanol should be added to Buffer RW2, Buffer GW1, and Buffer GW2 according to the instructions on the reagent bottle label.5. Before use, please check if there is any crystallization or precipitation in the Buffer RL. If there is any crystallization or precipitation, please dissolve it again in a 56 ℃ water bath.6. All centrifugation steps are performed using a desktop centrifuge at room temperature. Operation steps:1. Material processing1a The cells cultured on the wall should be first processed into cell suspension (maximum extraction amount of 107 cells), collected cells, discarded the culture medium, and added 600 cells µ L Buffer RL (check if it has been added before use) β- Mercaptoethanol), repeatedly blow and beat to fully decompose.Attention: It is necessary to discard the culture medium completely, otherwise it will affect the lysis and subsequent nucleic acid purification steps.1b Take no more than 30 mg of animal tissue, grind it into fine powder with liquid nitrogen, and add 600 µ Buffer RL (check if it has been added before use) β- Mercaptoethanol, or directly add 600 µ L Buffer RL (check if it has been added before use) β- Mercaptoethanol, homogenization treatment.Attention: The homogenate should be sufficient, otherwise it will affect RNA production.2. Centrifuge the solution obtained in the previous step at 12000 rpm (~13400 × g) for 3-5 minutes. Carefully add the supernatant to the spin columns DM that have been loaded into the collection tube. Centrifuge at 12000 rpm for 30-60 seconds and collect the filtrate. Place the adsorption column DM in a new 2 ml collection tube at room temperature or 4 ℃ for DNA extraction. Attention: Ensure that there is no liquid residue on the adsorption column, and if necessary, repeat centrifugation until all liquids pass through the membrane of the adsorption column. Total RNA extraction3. Add 1 volume of 70% ethanol (prepared without RNase water) to the filtrate obtained in step 2, and mix well.4. Add all the solution obtained in the previous step to the spin columns RM that have been loaded into the collection tube. If the solution cannot be added completely at once, it can be transferred in stages. Centrifuge at 12000 rpm for 20 seconds and retain the liquid in the collection tube for protein extraction.5. Place the adsorption column RM into a new 2ml collection tube and add 700 to the adsorption column RM µ L Buffer RW1, centrifuge at 12000 rpm for 20 seconds, discard the waste liquid in the collection tube, and place the adsorption column RM into the recovery manifold.6. Add 500 to the adsorption column RM µ Buffer RW2 (check if anhydrous ethanol has been added before use), centrifuge at 12000 rpm for 20 seconds, discard the waste liquid in the collection tube, and place the adsorption column RM back into the 2 ml collection tube.7. Repeat step 6.Centrifuge at 8.12000 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. Attention: 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.).9. Place the adsorption column RM in a new 1.5 ml centrifuge tube without RNase, and add 30-50 to the middle of the adsorption column RM µ Place RNase Free Water at room temperature for 2-5 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 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 9 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 9.Genomic DNA extraction10. Add 500 to the adsorption column DM µ Buffer GW1 (check if anhydrous ethanol has been added before use), centrifuge at 12000 rpm for 20 seconds, discard the waste liquid in the collection tube, and place the adsorption column DM into the recovery tube.11. Add 500 to the adsorption column DM µ Buffer GW2 (check if anhydrous ethanol has been added before use), centrifuge at 12000 rpm for 2 minutes, discard the waste liquid in the collection tube, and place the adsorption column DM into the recovery tube. Attention: To further improve DNA purity, repeat step 11.Centrifuge at 12.12000 rpm for 2 minutes and discard the waste liquid from the collection tube. Place the adsorption column DM at room temperature for a few minutes to thoroughly dry the ethanol in the column. Attention: 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.).13. Place the adsorption column DM in a new centrifuge tube and add 100 to the middle of the adsorption column DM by suspending it in the air µ L Buffer GE, leave at room temperature for 2-5 minutes, centrifuge at 12000 rpm for 2 minutes, collect DNA solution, and store DNA at -20 ℃.Attention:1) The volume of Buffer GE should not be less than 100 µ l. Small volume affects the recovery rate.2) If we want to increase DNA production, we will µ Add a new Buffer GE to the adsorption column and repeat step 13; If you want to increase the DNA concentration, you can add the DNA eluent obtained in step 13 back onto the adsorption column and repeat step 13.Protein extraction14. Add 1 volume of Buffer PZ to the RNA extraction effluent (i.e. the solution obtained in step 4), mix well, and let it stand at room temperature for 10-30 minutes.Centrifuge at 15.12000 rpm for 10 minutes and discard the supernatant.16. Add 500 µ Centrifuge at 12000 rpm for 1 minute with 70% ethanol, and try to absorb the supernatant as much as possible.17. Place the centrifuge tube at room temperature for a few minutes to dry the precipitate.Attention: The purpose of this step is to remove residual ethanol. Excessive drying can make protein precipitation difficult to dissolve, and incomplete drying of residual ethanol can affect protein loading.18. Add 100 µ L Buffer PLS to obtain protein solution.Attention:1) The protein samples obtained by dissolving with Buffer PLS are suitable for SDS-PAGE and Western Blot detection, but not for Bradford method for protein quantification. If Bradford method is needed for protein quantification, 5% SDS can be used to dissolve the protein, or suitable protein dissolution buffer can be selected based on downstream experiments.2) The amount of dissolved protein buffer added is determined based on the initial sample size and specific downstream test requirements.3) The dissolved protein can be stored at -20 ℃ for several months and at 2-8 ℃ for several days.If protein samples require SDS-PAGE electrophoresis, the following operations can be performed:19. Add protein loading buffer to the protein sample, denature at 95 ℃ for 5-10 minutes, and cool the sample to room temperature. Centrifuge at 20.12000 rpm for 1 minute, extract the supernatant for downstream SDS-PAGE or Western blot tests... Read More | Description：Acetylcholinesterases (AChEs) are enzymes that hydrolyze the neurotransmitter acetylcholine (ACh) to acetate and choline. AChE is located at the synaptic cleft and functions to terminate synaptic transmission by catalyzing the breakdown of ACh allowing cholinergic neurons to Description：Acetylcholinesterases (AChEs) are enzymes that hydrolyze the neurotransmitter acetylcholine (ACh) to acetate and choline. AChE is located at the synaptic cleft and functions to terminate synaptic transmission by catalyzing the breakdown of ACh allowing cholinergic neurons to return to a resting state after activation. It is also found in membranes of red blood cells, motor and sensory fibers, muscles, nerves and central and peripheral tissues. Changes in AChE activity may result from exposure to certain insecticides, which act as cholinesterase inhibitors. Inhibitors of AChE are also used to treat certain conditions such as dementia.Acetylcholinesterase activity assay kit has been used to determine the activity of acetylcholinesterase in a rat organophosphate model and in brain tissue homogenates.Principle：Acetylcholinesterase can catalyze the hydrolysis of acetylcholine to choline, and the reaction of choline with disulfide p-nitrobenzoic acid to produce 5-merhydryl-nitrobenzoic acid (TNB). The product has a characteristic absorption peak at 412 nm, and the activity of acetylcholinesterase can be characterized by the change of light absorption valueThe Dilution Calculator EquationConcentration (start)xVolume (start)= Concentration (final)× Volume (final)This equation is commonly abbreviated as: C1V1 = C2V2... Read More | M666110 Component 96 T Storage M666110A Buffer WSL 40 mL RT M666110B Buffer MSL 40 mL RT M666110C Buffer CW1 (concentrate) 90 mL RT M666110D Buffer GW1 (concentrate) 40 mL RT M666110E Buffer GW2 (concentrate) 50 mL RT M666110F Buffer EB 30 mL RT M666110G Proteinase K 4×1.25 mL RT M666110H M666110 Component 96 T Storage M666110A Buffer WSL 40 mL RT M666110B Buffer MSL 40 mL RT M666110C Buffer CW1 (concentrate) 90 mL RT M666110D Buffer GW1 (concentrate) 40 mL RT M666110E Buffer GW2 (concentrate) 50 mL RT M666110F Buffer EB 30 mL RT M666110G Proteinase K 4×1.25 mL RT M666110H Magbeads V3 2×1 mL RTProduct Introduction：The reagent kit provides a simple, fast, and efficient method for extracting genomic DNA from blood samples. In the presence of high salt, DNA binds to the surface of silica coated Magheads. After rinsing, high-purity DNA is eluted in Buffer EB or deionized water. The purified DNA has good purity (A260/280 ratio between 1.7-1.9) and high integrity (>15 kb), and can be used for downstream experiments such as second-generation sequencing, quantitative PCR, and chip detection.Self provided instruments and reagents1) Constant temperature mixer2) 2/15 ml magnetic frame3) 32 channel nucleic acid extractor4) 96 channel nucleic acid extractor5) 96 DW Plate6) 8 channel Comb7) Spin tips pack8) Anhydrous ethanolPreparation and important precautions before the experiment1.Before the first use, add anhydrous ethanol to Buffer CW1, Buffer GW1, and Buffer GW2 according to the label of the reagent bottle and mark them properly.2.Magheads are strictly prohibited from freezing or centrifugation. Freezing and centrifugation may cause irreversible damage to Magheads.Operation stepsI. Manual single tube operation1. Use punching forceps to take 1 blood spot with a diameter of 6 mm or 4 blood spots with a diameter of 3 mm (depending on the actual situation) from the blood spot and place them in a 2.0 mL centrifuge tube.2. Add 40 to the centrifuge tube µ L Protein K and 300 µ L Buffer WSL, then place the centrifuge tube on a constant temperature mixer at 75 ℃ and 1200 rpm, shake and crack for 45 minutes to form Lysate. Remove the centrifuge tube from the constant temperature mixer, centrifuge briefly, and take the supernatant.Attention: If there is no constant temperature mixer, vortex the centrifuge tube for 10 seconds and incubate it in a 75 ℃ water bath for 30 minutes. During this period, vortex every 10 minutes for 10 seconds.3. Suck the supernatant into a new 2.0 mL centrifuge tube and add 300 µ L Buffer MSL, 300 µ L isopropanol and 20 µ L Magheads V3. Afterwards, place the centrifuge tube on a constant temperature mixer at 25 ℃ and 1600 rpm, shake and crack for 15 minutes, or invert the centrifuge tube and mix continuously for 15 minutes.4. Place the centrifuge tube on a magnetic stand and let it stand for 1 minute. After Magheads are completely adsorbed on the side wall of the centrifuge tube, discard the solution thoroughly (keep the centrifuge tube fixed on the magnetic stand).5. Remove the centrifuge tube from the magnetic frame and add 900 µ L Buffer CW1 (please check if anhydrous ethanol has been added before use), vortex point shake for 1 minute or vortex shake for 5 seconds, and then place it on a constant temperature mixer at 25 ℃ and 1600 rpm to shake and mix for 2 minutes (ensure that Magheads are in a mixed state during the shaking process). Afterwards, place the centrifuge tube on a magnetic stand and let it stand for 1 minute. After Magheads are completely adsorbed on the side wall of the centrifuge tube, gently invert the magnetic stand and wash the impurities on the centrifuge tube cover to completely discard the solution (keep the centrifuge tube fixed on the magnetic stand).6. Remove the centrifuge tube from the magnetic frame and add 500 µ L Buffer GW1 (please check if anhydrous ethanol has been added before use), vortex point shake for 1 minute or vortex shake for 5 seconds, and then place it on a constant temperature mixer at 25 ℃ and 1600 rpm to shake and mix for 2 minutes (ensure that Magheads are in a mixed state during the shaking process). Afterwards, place the centrifuge tube on a magnetic stand and let it stand for 1 minute. After Magheads are completely adsorbed on the side wall of the centrifuge tube, gently invert the magnetic stand and wash the impurities on the centrifuge tube cover to completely discard the solution (keep the centrifuge tube fixed on the magnetic stand).7. Remove the centrifuge tube from the magnetic frame and add 900 µ L Buffer GW2 (please check if anhydrous ethanol has been added before use), vortex point shake for 1 minute or vortex shake for 5 seconds, then place it on a constant temperature mixer at 25 ℃ and 1600 rpm, shake and mix for 2 minutes (ensure that Magheads are in a mixed state during the shaking process). Afterwards, place the centrifuge tube on a magnetic stand and let it stand for 1 minute. After Magheads are completely adsorbed on the side wall of the centrifuge tube, gently invert the magnetic stand and wash the impurities on the centrifuge tube cover to completely discard the solution (keep the centrifuge tube fixed on the magnetic stand).8. Remove the centrifuge tube from the magnetic frame and add 300 µ After shaking with 75% ethanol for 1 minute or 5 seconds, place the mixture on a constant temperature mixer at 25 ℃ and 1600 rpm for 2 minutes (ensure that the Magheads are in a mixed state during the shaking process). Afterwards, place the centrifuge tube on a magnetic stand and let it stand for 1 minute. After Magheads are completely adsorbed on the side wall of the centrifuge tube, gently invert the magnetic stand and wash the impurities on the centrifuge tube cover to completely discard the solution (keep the centrifuge tube fixed on the magnetic stand).9. Keep the centrifuge tube fixed on the magnetic frame, use a pipette to further remove the solution from the bottom and cover of the centrifuge tube, and then leave it at room temperature for 5-10 minutes to allow the ethanol to evaporate completely.10. Remove the centrifuge tube from the magnetic frame and add 50-200 µ L Buffer EB. Vortex oscillation causes the magnetic beads to completely suspend in the eluent and then place them on a constant temperature mixer at 56 ℃ and 1600 rpm for 10 minutes of shaking and elution, or incubate the centrifuge tube in a 56 ℃ water bath for 10 minutes, with vortex oscillation every 3 minutes for 10 seconds.11. Place the centrifuge tube on a magnetic stand and let it stand for 2 minutes. After Magheads are completely adsorbed on the side wall of the centrifuge tube, transfer the eluent to a new centrifuge tube using a pipette and store at -20 ℃ for later use.II. Matching with CWE21001. Use punching forceps to take 1 blood spot with a diameter of 6 mm or 4 blood spots with a diameter of 3 mm (depending on the actual situation) from the blood spot and place them in a 2.0 mL centrifuge tube.2. Add 40 to the centrifuge tube µ L Protein K and 300 µ L Buffer WSL, then place the centrifuge tube on a constant temperature mixer at 75 ℃ and 1200 rpm, shake and crack for 45 minutes to form Lysate.3. Add the corresponding reagents to the 96DW deep well plate according to the table below. Position Reagent 1&7 Colume Lysate: All Buffer MSL: 300 µL isopropanol：300 µL Magbeads V3: 20 µL 2&8 Colume Buffer CW1: 900 µL 3&9 Colume Buffer GW1: 500 µL 4& 10 Colume Buffer GW2: 900 µL 5& 11 Colume 75%ethanol: 300 µL 6& 12 Colume Buffer EB: 70 µL4.Place the deep well plate and magnetic sleeve that have been added to the reagent at the corresponding positions of CWE2100/CWE3200, run the blood slide extraction program, and after about 40 minutes, the program ends. Remove the deep well plate and magnetic sleeve.5.Transfer the elution products from columns 6 and 12 of the deep well plate to a 1.5 mL centrifuge tube for low-temperature storage.III. Matching with CWE9601. Use punching forceps to take 1 blood spot with a diameter of 6 mm or 4 blood spots with a diameter of 3 mm (depending on the actual situation) from the blood spot and place them in a 2.0 mL centrifuge tube.2. Add 40 to the centrifuge tube µ L Protein K and 300 µ L Buffer WSL, then place the centrifuge tube on a constant temperature mixer at 75 ℃ and 1200 rpm, shake and crack for 45 minutes to form Lysate.3. Add the corresponding reagents to the 96DW deep well plate according to the table below Position Reagent Plate 1 Lysate: All Buffer MSL: 300 µL isopropanol ：300 µL Magbeads V3: 20 µL Plate 2 Buffer CW1: 900 µL Plate 3 Buffer GW1: 500 µL Plate 4 Buffer GW2: 900 µL Plate 5 75% ethanol : 300 µL Plate 6 Buffer EB: 70 µL4. Place the deep well plate and magnetic sleeve that have been added to the reagent at the corresponding positions on CWE960, run the blood slide extraction program, and after about 40 minutes, the program ends. Remove the deep well plate and magnetic sleeve.5. Transfer the elution products from Plate 6 to a 1.5 mL centrifuge tube for low-temperature storage... Read More | DescriptionPhoto KitAlysis Starter Kit enables screening of 24 micro-scale simultaneous photocatalytic reactions with consistent and reproducible photon intensity. User guide is provided in the below hyperlink.Photo KitAlysis Operating InstructionsComponents:Photo KitAlysis LED ControllerBlue LED DescriptionPhoto KitAlysis Starter Kit enables screening of 24 micro-scale simultaneous photocatalytic reactions with consistent and reproducible photon intensity. User guide is provided in the below hyperlink.Photo KitAlysis Operating InstructionsComponents:Photo KitAlysis LED ControllerBlue LED Array (470 nm)Photo KitAlysis Reaction BlockTorque screwdriverSmall screwdriver to easily remove torqued screws after reaction is completeFeatures:Designed and tested by synthetic chemists.Controller provides repeatable milliamp selection for photon intensity0-30 mA variable LED output3 different LED options: blue (470 nm, included), green (527 nm, sold separately), and white (sold separately)Non-magnetic LED baseChemically resistant LED coverPTFE coated cablingDesigned to be used withPhoto KitAlysis High-Throughput Reaction Screening Kit(sold separately).Best when used withKitAlysis Benchtop Inertion Box(sold separately)... Read More | Products R669890Component50 TStorageR669890ADNase I1000 U-20℃. Avoid freeze/thaw cycle.R669890B10×Reaction Buffer1mL-20℃. Avoid freeze/thaw cycle.R669890CBuffer RL35 mLRTR669890DBuffer RW140 mLRTR669890EBuffer RW2 (concentrate)11 mLRTR669890FRNase-Free Water10 mLRTR669890GSpin Products R669890Component50 TStorageR669890ADNase I1000 U-20℃. Avoid freeze/thaw cycle.R669890B10×Reaction Buffer1mL-20℃. Avoid freeze/thaw cycle.R669890CBuffer RL35 mLRTR669890DBuffer RW140 mLRTR669890EBuffer RW2 (concentrate)11 mLRTR669890FRNase-Free Water10 mLRTR669890GSpin Columns FL with Collection Tubes50 setsRTR669890HSpin Columns RM with Collection Tubes50 setsRTR669890IRNase-Free Centrifuge Tubes (1.5 mL)100 EART ProductsThis kit adopts centrifugal adsorption columns with high efficiency and specificbinding of nucleic acids and unique buffer system, which can rapidly extract totalRNA from bacteria or cultured animal cells.The reaction can be completed in 30-40minutes, and the extracted total RNA is extremely pure and free of protein and othercontaminants, which is suitable for RT-PCR, Real-Time RT-PCR, microarray analysis,in vitro translation and other experiments. Self-contained reagents: Lysozyme, β-mercaptoethanol, anhydrous ethanol (freshlyopened or for RNA extraction). Pre-experiment Preparation and Important Notes 1. To prevent RNase contamination, attention should be paid to the following aspects:1) Use RNase-free plastics and tips to avoid cross-contamination. 2) RNase-free water should be used to prepare the solution. 3) Operators wear disposable masks and gloves, and change gloves diligently duringthe experiment. 2. Add β-mercaptoethanol to Buffer RL before use to reach a final concentrationof 1%, e.g., add 10 µl of β-mercaptoethanol to 1 ml of Buffer RL. Buffer RL withβ-mercaptoethanol can be stored at 4℃ for 1 month, if precipitation occurs, pleaseheat to dissolve and use.3. Anhydrous ethanol should be added to Buffer RW2 before first use according tothe instructions on the reagent bottle label. 4. All centrifugation steps are carried out at room temperature if not otherwisespecified, and all steps should be performed quickly. Procedure 1. Centrifuge at 12,000 rpm (~13,400 x g) at 4°C for 2 minutes to collect theorganisms (maximum volume of organisms should not exceed 1 x 109) and carefullyremove all supernatants. Note: Supernatants that leave residues can interfere with the subsequent digestionprocess. 2. Thoroughly resuspend the organisms with 100 µl of TE buffer containing Lysozymeand incubate at room temperature. The specific formulation and incubation time areas follows:/The final concentration of Lysozyme in TE bufferincubation timeG-germ400µg/ml3-5minG+germ3mg/ml5-10min 3. Add 350 µl of Buffer RL (check that β-mercaptoethanol has been added beforeuse), vortex and shake to mix (insoluble precipitate may appear in this step), addall of the solution and the precipitate to the filter columns (Spin Columns FL) thathave been loaded into the collection tubes, and centrifuge at 12,000 rpm for 2minutes. 4. Add 250 µl of anhydrous ethanol to the filtrate obtained in the previous stepand mix well (a precipitate may appear at this point). Transfer the resulting solution together with the precipitate to a Spin Columns RM packed in a collectiontube, centrifuge at 12,000 rpm for 1 min, discard the waste solution and put thecolumn back into the collection tube.5. Add 350 µl Buffer RW1 to the adsorbent column, centrifuge at 12,000 rpm for1min, discard the waste liquid and put the adsorbent column back into the collectiontube.6. Preparation of DNase I mixture: Take 52µl of RNase-Free Water, add 8µl of 10×Reaction Buffer and 20µl of DNase I (1U/µl) to it, mix well, and make a finalvolume of 80µl of reaction solution.7. Add 80µl of DNase I mixture directly to the adsorption column and incubate at20-30°C for 15 minutes.8. Add 350 µl Buffer RW1 to the adsorbent column, centrifuge at 12,000 rpm for1min, discard the waste liquid and put the adsorbent column back into the collectiontube.9. Add 500 µl of Buffer RW2 to the column (check that anhydrous ethanol is addedbefore use), centrifuge at 12,000 rpm for 1 min, and discard the waste solution.10. Repeat step 9.11. Place the adsorbent column back into the collection tube and centrifuge at 12,000rpm for 2 minutes. Note: The purpose of this step is to remove residual ethanol from the adsorptioncolumn; ethanol residue can interfere with subsequent enzymatic reactions (zymography, PCR, etc.).12. Load the adsorption column into a new RNase-Free collection tube, add 30-50 µl of RNase-Free Water to the middle of the adsorption membrane, leave it at roomtemperature for 1 minute, centrifuge at 12,000 rpm for 1 minute, collect the RNAsolution, and store the RNA at -70°C to prevent degradation. Note: 1) The volume of RNase-Free Water should not be less than 30 µl, too smallvolume affects the recovery rate. 2) If you want to increase the RNA yield, repeat step 12 with 30-50 µl of freshRNase-Free Water. If the RNA concentration is to be increased, the resulting solution can be reintroduced into the adsorption column and step 12 repeated... Read More |