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H6 investigation summary: material 220837 is manufactured by rehydrating the media components with usp purified water, and thoroughly mixing until a homogeneous solution is obtained.The tubes are filled, capped, torqued, and then labeled by machine per standard operating procedure (sop).The tubes are terminally autoclaved in an air over pressure (aop) autoclave, per manufacturing instructions, using a validated cycle.Post autoclaving, tubes are packaged into final shipping configurations.The batch history record review for batch 2124342 was satisfactory and no quality notifications were generated during manufacturing and inspection.Formulation, filling, and autoclaving processes were within specifications.In process checks were performed at the designated intervals.Those checks confirmed that the caps were tightened to the validated specifications per internal procedure.Qc inspection and testing were satisfactory at time of release.As part of the release criteria for this product, the bhr is reviewed to confirm the following: --the total elapsed time between end of formulation and start of the autoclave cycle was within the specified limits.--all autoclave parameters conformed to the validated cycle parameters for this product.--the minimum f0 for this product was met.The complaint history was reviewed, and no other complaints have been taken on this batch.Retention samples from batch 2124342 (10 tubes) were available for inspection.The retention samples showed no signs of contamination/ turbid or hazy media appearance in 10/10 retention tubes from visual inspection.All 10/10 retention tubes and a clear to trace hazy light yellow tan appearance as described in the certificate of analysis.For investigation, two uninoculated retention tubes were incubated.One tube was placed in the 33-to-37-degree celsius incubator and one tube was placed in the 20-to-25-degree celsius incubator.No microbial growth or turbidity of the media was seen in 2/2 incubated retention tubes at seven days incubation.One photo was received to assist with the investigation: ¿ the photo shows the label of a partial bd carton from batch 2124342 carton number 154.Returns were received to assist with the investigation.A small tube shipping carton was received with six tubes from batch 2124342.There was no evidence of contamination or turbid media in 6/6 returned tubes.All six returned tubes had the light-yellow tan clear to trace hazy appearance as described in the certificate of analysis.For further investigation of the returned samples received, all 6/6 returned tubes were incubated.Three tubes went into 20-25 degree celsius incubation, and three tubes went into 33-37-degree celsius incubation.At the end of a seven-day incubation period no microbial growth or cloudy media was observed in 6/6 incubated returned tubes.This complaint cannot be confirmed based on the evidence provided by the returned samples/photo.
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