"Heyuan Liji" is a joint venture between Heyuan Biotechnology (stock code: 688238) and Liji Biotechnology, specializing in the "Liji Biotechnology" and "Life-ilab" reagent brands
What are the grades of DMSO and the method of sterile filtration?
The DMSO grade used for cryopreservation must be tissue culture grade DMSO (such as Sigma D2650), which is already in a sterile state. After the first bottle opening, a small amount should be immediately divided into sterile test tubes and stored at 4 ℃ to avoid repeated freezing and thawing that may cause DMSO cracking and release harmful substances, and to reduce the chance of contamination. To filter DMSO, a DMSO resistant Nylon material filter membrane must be used.