Is there extra carbon dioxide in the air?

It has been determined that for every 1 gram of organic matter synthesized by a green plant, 1.6 grams of carbon dioxide need to be absorbed, and 90% of the dry matter accumulated in plants is a product of photosynthesis. Under normal conditions, carbon dioxide in the air can meet the needs of crops and does not need to be applied as a fertilizer. However, in the closed greenhouses and greenhouses in winter, air does not circulate, and carbon dioxide consumed by photosynthesis cannot be supplemented. The lack of carbon dioxide has become a limiting factor for crop growth, and therefore it is necessary to apply “gas fertilizers”. It needs to be emphasized that both carbon and nitrogen are essential nutrients for crops and they must not be lacking, and they need to be coordinated. For example, when the greenhouse lacks carbon dioxide, if no "gas fertilizer" is applied, partial application or application of nitrogen fertilizer will aggravate the carbon and nitrogen nutrient imbalance of the plant, which will play a role of "increasing the burden on the snow."

IgM/IgG Antibody Test

This SARS-COV-2 Rapid Antibody Test Kit (Colloidal Gold) is a newly launched fast diagnostic product developed by Shenzhen Uni-medica Technology Co.,Ltd for fast qualitative test of SARS-COV-2 IgM/IgG antibody in human serum/plasma/whole blood. This Covid-19 Antibody Test Kit has already completed the European In Vitro Diagnostic Medical Devices Directive(IVDD)compliance statement and registration in the European Union, and has been qualified for EU market access, see CE certificate attached.

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