“He Yuan Li Ji” was established as a joint venture between He Yuan Bio (stock code: 688238) and Li Ji Bio, with its core business centered on the “Li Ji Bio” and “Life-ilab” reagent brands.

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Why are culture media typically reddish in color?

Publication date：2026-10-29
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Because the culture medium contains phenol red as a pH indicator, with an indication range of 6–8—yellowing when the medium is acidic and purpling when it is alkaline—it is necessary to change the medium promptly, replacing it with fresh medium to maintain an optimal growth environment for the cells. Certain specialized cell types require phenol‑red‑free media, so careful and timely observation of the cells is essential.

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