PETG media bottles have very good gas barrier properties, suitable for storage and sampling of active pharmaceutical ingredients and bulk intermediates, and also ideal for preparation and storage of buffers, serum, culture fluids, or long-term storage of pH-sensitive liquids, serum-free media is one of its applications.
Serum-free medium is a synthetic medium that can maintain the growth and reproduction of cells in vitro for a long time without adding serum. Serum-free media and reagents are widely used to culture mammalian and invertebrate cells to prepare monoclonal antibodies, viral antigens, and recombinant proteins. Most serum-free media contain transferrin, which transports ions into cells, and insulin, which regulates glucose uptake, as well as some proteins and albumin, fibrin, fetuin, etc., which play various roles in cell culture. functions, such as providing the matrix required for cell adhesion, resisting bioreactor shear stress, and serving as a carrier for lipids and other growth differentiation factors.
The storage environment of serum-free medium is 2-8°C. The PETG media bottle has very good transparency and low temperature resistance, and is resistant to corrosion by most acid and alkali solvents. It is a good storage container. Cell culture involves multiple additions of medium. In order to facilitate the experimenter's grasp, the bottle body adopts an ergonomic square design.
It should be noted that the medium provides nutrients for the cells. When operating the PETG media bottle, attention should be paid to aseptic operation to avoid introducing contamination and affecting cell growth.
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.