Spring Land Broadcasting

1. Raise sowing. If the surface of the ground is shallow (3-4 cm), you can keep the dew for 1-2 times on the night before or at the dawn of the day when the dew is dry and the ground is moist. The thickness of dry soil layer can then be sown by general methods. When the surface of the dry soil layer is 3-5 cm, but the bottom soil is still in good condition, the earthworms can be used to lift the earthworm before or after sowing to increase the moisture content of the upper layer and improve the seedlings. The ability to resist drought ensures full seedlings.

2. By sowing. In the case where there is a partial absence and there is a defect around, a sowing method can be adopted. In the lack of land, ditch or shave, excavate wet soil from the soil with good soil moisture. If the lower part has pods and the upper part is lacking, plant it. Then cover the seeds with wet soil. A part of the wet soil is sown and then covered with wet soil to keep the whole seedlings.

3. Introduce sowing seeds. Smash the clods 3-4 days before planting and crack them once with a stone hoe. After soaking in the morning, sow the seeds and keep them on the floor. Prevent ransacking. Run 2-3 days later and make the lower layer of water gradually move upward to germinate. Emergence.

4. Seed sowing. When the soil is in severe drought, in order not to delay agricultural time, use all available limited water sources, localized or watered.

5. "Three wet" method sowing. In the case of seed germination and seedling emergence, seed germination, manure mixing, deep sowing and shallow cover sowing methods can be used to achieve wet, wet, and subsoil wetlands and strive for full seedlings.

Nucleic Acid (DNA/RNA) Extraction Kit

1. Introduction

The total viral nucleic acid extraction kit is suitable for extracting total viral nucleic acid from serum, plasma, tissue homogenate and other samples. The kit is based on silica column purification technology, which eliminates the need for toxic phenol-chloroform extraction and time-consuming alcohol precipitation. This product has successfully extracted nucleic acids from hepatitis B A/C, hepatitis C, and norovirus standard. The obtained DNA/RNA can be directly used in a series of downstream experiments such as PCR, RT-PCR, and LAMP.
Notice:

1. The carrier RNA solid must be dissolved in Nuclease Free Water to 1µg/µl before use, and vortex to dissolve. Store in aliquots at -70°C. If you need to store it at -20℃ for a long time, please repackage it according to the number of times of use.

2. Dissolve Proteinase K (20mg/ml): Add Proteinase Dissolve Buffer to dissolve Proteinase K to a final concentration of 20mg/ml. Proteinase K dry powder can be stored at 2-8°C for one year, but dissolved Proteinase K must be stored in aliquots at -20°C. Repeated freezing and thawing of Proteinase K can affect its activity.

3. Buffer VHB must be diluted with 14 ml absolute ethanol before use and stored at room temperature.

4. Buffer RW2 must be diluted with 80 ml of absolute ethanol before use and stored at room temperature.

3. Shelf life

Except for Proteinase K and Carrier RNA, other components of this product can be stored at room temperature (15-25°C) for 12 months, and should be stored at 2-8°C for long-term storage. Proteinase K and Carrier RNA dry powder are transported at room temperature. Please store at -20°C after receiving the test product, and store at -20°C after dissolving.

Nucleic Acid Extraction Reagent Kit,Nucleic Acid Extraction Kit,Covid-19 Nucleic Acid Extraction Reagents,Nucleic Acid Test Kits

Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com