news

Application of PETG Media Bottle - Basal Medium

Wed Jul 06 09:51:56 CST 2022

PETG media bottle is a storage container with very high transparency. It adopts a square design and is easy to grasp. It is mostly used for the storage of solutions such as serum, culture medium, buffer, etc.

Although the nutritional requirements of various microorganisms are different, the basic nutrients required by most microorganisms are the same. The medium prepared according to the basic nutrients required for the growth and reproduction of general microorganisms is called the basic medium. Beef extract peptone medium is a commonly used one. It can be used as the basic component of some special medium, and then according to the special requirements of a certain microorganism, the required nutrients can be added to the basic medium.

Contains essential nutrients for bacterial growth and reproduction, and can be used for most bacterial growth. Add an appropriate amount of peptone, sodium chloride, and phosphate to the beef infusion to adjust the pH to 7.2 to 7.6. After sterilization, it is the basal liquid medium; if 0.3% to 0.5% of agar is added, it is Basal semi-solid medium; adding 1% to 2% agar, it is basal solid medium. PETG media bottles store liquid basal medium.

The storage environment of the basal medium is 2-8°C, and the validity period is generally 12 months. Although the PETG media bottle can withstand the low temperature of -70°C, in order to maintain a good use effect, freezing and thawing of the medium is not recommended. The culture medium will be filtered and sterilized, and attention should be paid to aseptic operation when using it to avoid contamination.

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.