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Media bottle is a special packaging made of transparent polyester (PET/PETG) raw material with organic solvent added through injection stretch blow production process. In order to facilitate holding, the shape of the bottle is generally square, and the bottle body is marked with a scale. So, what are the main applications of media bottles?
1. Serum storage: Storage of serum is an important application of media bottles. Serum is a complex mixture formed by removing fibrinogen from plasma and should be stored at -5°C to -20°C. If stored at 4°C, it should not exceed one month. If one bottle cannot be used up at a time, it is recommended to aseptically aliquot the serum into an appropriate sterilized container and put it back into the freezer.
2. Medium storage and preparation: Medium is an artificially formulated nutrient for the growth and maintenance of microorganisms, plants and animal tissues, generally containing water, nitrogen sources, inorganic salts (including trace elements), carbon sources, Growth factors (vitamins, amino acids, bases, antibiotics, pigments, hormones and serum, etc.).
3. Buffer: When a certain amount of acid and alkali is added to some solutions, or a small amount of water is added to dilute, the solution has the effect of hindering the pH change of the solution, which is called buffering. Such a solution is called a buffer solution. The media bottle body has a scale, which is easy to observe the volume of the solution. The special square design is ergonomic and easy to grasp.
The above are the three application fields of the media bottle. The polyester raw material has good low temperature resistance and does not react to most acid and alkali solvents. These advantages also make the application range of the media bottle wider.
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.