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MiSeq run failed; low clustering, but good QC

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  • MiSeq run failed; low clustering, but good QC

    Have a strange situation, our latest MiSeq run failed for 16S - from a protocol (EMP @ ArgonneNatLabs) that we use all the time.

    The clustering was unusually low (180 vs the expected 800) and we did a KAPA just prior to dilutions (those are correct, I checked). The run QC, Clusters %PF and all the obvious look very good - when the run finished, it did not demultiplex and says "failed".

    I've contacted Illumina, but this being a Saturday, I thought I'd see if anyone has seen this before?

  • #2
    Bad NaOH...

    Made fresh & reloaded - now working.

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