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Fungal culture media (such as modified Martens medium) were incubated at 23-28℃ for 14 days

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This guide explains the difference between "still chemically present," "still sterile enough for a multi-use vial," and "still appropriate for a controlled research protocol." Quick Answer: 28 Days Is the Conservative Rule For general research planning, the cleanest answer is: reconstituted peptides usually last about 3-4 weeks in the refrigerator when mixed with bacteriostatic water and handled carefully