Black soot on instrument set

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We had a wrapped instrument set that went through the sterilization process but when it came out the instrument set had a black soot on the outer paper wrapper.The instrument set was placed on the middle shelf of the sterilization cart and was not touching the inside chamber walls.We believe it may be the steam line that is the cause. Does anyone have any other suggestions?

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Posted by Kenny Ho (Canada) (Questions: 1, Answers: 1)
Asked on September 21, 2016 11:44 pm
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Please ensure that your utility- especially water quality or steam quality.

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Posted by mskamat (India) (Questions: 0, Answers: 1)
Answered on September 23, 2016 8:12 pm
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Dear Kenny.
It can be organic in water. You should check microbiological water quality, especialy in water tank. Water in tank likes dark and cold places.
Petr

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Posted by Petr Demidov (Russia) (Questions: 0, Answers: 38)
Answered on October 4, 2016 8:42 am
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Hi Kenny

Good day. Also too, there is a possibility of “other” materials like labels, sterilizing tapes etc. that could have been attached to the chamber walls. The possibility of repeated exposure for sometime might have caused them to be mixed with the moist heat and could have been the cause. Do perform an RCA to se what causes them. It would be beneficial to gather samples for laboratory testing.

Roel

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Posted by roelbc (Australia) (Questions: 0, Answers: 2)
Answered on November 3, 2016 10:23 pm
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