01 February 2018 1 5K Report

I want to add hydrocortisone solution to cell culture medium. The stock concentration is 100mg/mL and I only need concentrations around 1000ng/mL and the solution should not be kept longer than 3 days. Is it possible to store the solution as diluted aliquots in PBS and freeze it? I have also read that storage in ethanol at -20 °C is an option?

Thanks for your help!

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