Agar plates (c6045 - tryptic soy agar with lecithin and polysorbate 80) manufactured by valiteq had growth within plates prior to opening.The incubation instructions on the quality certificate and use of contact sampling plates were both incorrect.Quality certificate current incubation states: minimum incubation time of 5 days at 20-25c and 33-37c.Use of contact sampling plates states: incubate at 20-25 c for a period of 2 weeks.Check plates for microbial development at 24 hours, 48 hours, 96 hours, one week and 2 weeks.Per valiteq the correct incubation is at 20-25 c for a period of 2 weeks, check plates for microbial development at 24 hours, 48 hours, 72 hours, 1 week and 2 weeks.Diagnosis or reason for use: environmental sampling.
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