On (b)(4) 2014 - the supplier was contacted and asked if any changes were made to the foam biopsy pads or to the blue colorant.On (b)(4) 2014 - supplier responded stating the formulation for the foam grade has not changed and many different batches of individual raw material have been used without incident.No change has been made in colorant type or supplier over the past year.Nothing is added to the foam to control static.On (b)(4) 2014, qa (b)(4) tested returned products from customer.The product was visually inspected and compared to a different lot of the same product.The comparison showed all pads were similar in appearance.Ten pads of each lot were placed into beakers with 50mls of 10% nbf.Pads visually appeared to be completely saturated in both beakers.The amount of 10% nbf that remained in the beakers were equivalent.The biopsy pads did not fail and functioned as expected.There have been no other reported incidents with this product of this nature.
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