Precipitate in Influenza control antigen from IRR. Is it OK?

09 August 2023 0 9K Report

Hello everyone! We received Influenza B Control Antigens BPL inactivated for HAI. It looks like slightly yellow transparent fluid with white flakes. I can't find any information on IRR website, unfortunately. Is it supposed to look like that? Do I need to sediment these flakes before HAI analysis? Any ideas are appreciated)) Thanks in advance for your replies!

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