Cell culture is a form of tissue culture, which has been widely used in the fields of biopharmaceuticals, monoclonal antibodies, immunotherapy, stem cell therapy, etc. Cell culture roller bottles are commonly used consumables in the cell culture process, and they have very high requirements on materials, generally USP Class VI medical materials.
The material of the cell culture roller bottle should meet the needs of cell growth. The United States Pharmacopeia (USP) is a nongovernmental organization that supports public health by developing up-to-date standards to assure the quality of pharmaceuticals and other medical industry technologies. USP Class VI medical materials are the gold standard of the United States Pharmacopoeia for various medicines and raw materials, and are also a very high-quality choice for medical device manufacturers. According to the USP-NF general rules, plastics subjected to in vivo biological response tests will be classified as designated medical plastics. The purpose of the testing is to determine the biocompatibility of plastic products for use in medical device implants and other systems. USP defines six testing levels, from I to VI, plastics rated as US Medical Plastics Level VI mean that the most comprehensive and rigorous testing has been established.
The selection of USP Class VI polymer materials for cell culture roller bottles is the key to ensuring the smooth progress of cell culture experiments, and is also a basic requirement in the fields of biopharmaceuticals and clinical treatment. With the development of technology and the continuous emergence of various polymer materials, cell culture roller bottles will also be able to meet more and more experimental needs.
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.