English
As an indispensable part of the cell freezing process, cell cryopreservation solution has a series of strict requirements for its storage container - culture media bottles.
These requirements cover the temperature resistance, sealing, transparency, bottle scale and other aspects of the culture medium bottle to ensure the safety and stability of cells in the freezing process.
First of all, the materials of culture media bottles need to have good temperature resistance. Since cell cryopreservation solutions need to be stored at lower temperatures, the material of the bottles must be able to withstand low-temperature environments and maintain their physical properties and chemical stability.
Common material choices include PET or PETG, which have excellent low-temperature resistance and can remain stable at temperatures as low as -80℃.
Secondly, culture media bottles need to have good sealing performance. Cell cryopreservation solutions contain various components that are critical to cell survival, so the seal between the cap and the bottle must be tight to prevent liquid leakage or gas exchange and to ensure a stable environment for the cells in the cryopreservation solution.
The quality seal design and material selection of culture media bottles can effectively reduce the risk of contamination and safeguard the quality and safety of cells.
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.