English
Serum, as an essential nutrient for cell growth, plays an important role in various cell culture experiments. Due to its particularity, it has strict requirements for the storage environment. PETG serum bottles are generally chosen as storage containers. So, what conditions does this kind of packaging need to meet?
1. Low temperature resistance: The storage temperature of serum is -5℃ to -20℃. If the serum needs to be maintained for a long time, it must be stored in a low temperature refrigerator of -20℃-70℃. Therefore, low temperature resistance has become a basic condition that PETG serum bottles must meet.
2. Sterility: Serum provides basic nutrients, hormones, various growth factors, binding proteins, contact promotion and growth factors for cell growth, allowing cells to adhere to the wall from mechanical damage and providing some protection to cells in culture. effect. Cells are particularly sensitive to the environment and can easily be affected by the external environment or container and inhibit their growth. Therefore, the storage container must be sterilized to ensure no DNase, RNase, pyrogen, and cytotoxicity.
3. Impact resistance: Serum will be affected by various external forces during transportation, and good impact resistance of storage containers is the key to ensuring its safety.
The above are several basic conditions that PETG serum bottles need to meet. In addition, in order to facilitate the observation of the serum capacity during use, the scale design of the bottle is also very considerate; the ergonomic square design is easy to grasp, and these are all Researchers have brought convenience in use.
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.