The rapid development in the field of life sciences has made cell culture technology more widely used. Cell culture flasks are a consumable suitable for medium-scale cell and tissue culture in laboratories. The caps of this consumable material are divided into two types: vent caps and sealed caps. What are the characteristics of the vent caps?
The cell culture flasks with a vent cap is mainly used in an environment with carbon dioxide. The vent cap is composed of a breathable membrane and a bottle cap. Breathable membrane is a new type of polymer waterproof material. In terms of production process, the technical requirements of waterproof and breathable membranes are much higher than those of general waterproof materials; from the point of view of quality, waterproof and breathable membranes are also not available in other waterproof materials. High temperature resistance, low temperature resistance, corrosion resistance, non-adhesion, high lubrication and other characteristics.
The middle breathable layer of the waterproof and breathable membrane is a kind of microporous membrane, which is micropores produced by high-tech principles. The size of the pores can allow water vapor to pass smoothly, but not water molecules, so this product has the function of waterproof and breathable. The breathable cover can let the carbon dioxide in the environment enter the cell culture square bottle, and provide the required gas conditions for cell growth.
The breathable membrane on the cell culture flasks cap also has a sterilization function, which can prevent bacteria from entering the container and polluting the cells. The liquid in the bottle will not affect its microbial barrier performance and ventilation effect after it contacts the breathable membrane. Research institutions can use it with confidence.
The FAI climbed 5.9 percent year-on-year in the first 11 months of 2018, quickening from the 5.7-percent growth in Jan-Oct, the National Bureau of Statistics (NBS) said Friday in an online statement.
The key indicator of investment, dubbed a major growth driver, hit the bottom in August and has since started to rebound steadily.
In the face of emerging economic challenges home and abroad, China has stepped up efforts to stabilize investment, in particular rolling out measures to motivate private investors and channel funds into infrastructure.
Friday's data showed private investment, accounting for more than 60 percent of the total FAI, expanded by a brisk 8.7 percent.
NBS spokesperson Mao Shengyong said funds into weak economic links registered rapid increases as investment in environmental protection and agriculture jumped 42 percent and 12.5 percent respectively, much faster than the average.
In breakdown, investment in high-tech and equipment manufacturing remained vigorous with 16.1-percent and 11.6-percent increases respectively in the first 11 months. Infrastructure investment gained 3.7 percent, staying flat. Investment in property development rose 9.7 percent, also unchanged.