To prevent loss of myoblastic cells, cultures should be subcultured before they become confluent. During subculturing, to detach the cell from the flask/dish and to avoid cell to cell adhesion usually trypsin and EDTA mixture are widely used. And their concentration depends on cell lines to cell lines.
I am going to start working with h9c2 cell lines. According to ATCC (product sheet H9c2(21) (ATCC® CRL1446™ ), I have to use 0.25% (w/v) Trypsin 0.53 mM EDTA solution for detaching the cells during subculturing. So, now I need a protocol to prepare this mixture. Thanks in advance.