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  2. Bioburden - Wikipedia

    en.wikipedia.org/wiki/Bioburden

    Bioburden is normally defined as the number of bacteria living on a surface that has not been sterilized. [ 1 ] The term is most often used in the context of bioburden testing, also known as microbial limit testing, which is performed on pharmaceutical products and medical products for quality control purposes.

  3. Colony-forming unit - Wikipedia

    en.wikipedia.org/wiki/Colony-forming_unit

    In microbiology, a colony-forming unit (CFU, cfu or Cfu) is a unit which estimates the number of microbial cells (bacteria, fungi, viruses etc.) in a sample that are viable, able to multiply via binary fission under the controlled conditions.

  4. Sterility assurance level - Wikipedia

    en.wikipedia.org/wiki/Sterility_assurance_level

    In microbiology, sterility assurance level (SAL) is the probability that a single unit that has been subjected to sterilization nevertheless remains nonsterile.. It is never possible to prove that all organisms have been destroyed, as the likelihood of survival of an individual microorganism is never zero.

  5. Biochemical oxygen demand - Wikipedia

    en.wikipedia.org/wiki/Biochemical_oxygen_demand

    BOD test bottles at the laboratory of a wastewater treatment plant. Biochemical oxygen demand (also known as BOD or biological oxygen demand) is an analytical parameter representing the amount of dissolved oxygen (DO) consumed by aerobic bacteria growing on the organic material present in a water sample at a specific temperature over a specific time period.

  6. A New Study Pinpointed Exactly How To Calculate Your ... - AOL

    www.aol.com/study-pinpointed-exactly-calculate...

    A New Study Pinpointed Exactly How To Calculate Your Biological Age. Korin Miller. February 19, 2025 at 9:58 AM. New Study Shows How To Find Your Biological Age Jamie Grill - Getty Images.

  7. D-value (microbiology) - Wikipedia

    en.wikipedia.org/wiki/D-value_(microbiology)

    In microbiology, in the context of a sterilization procedure, the D-value or decimal reduction time (or decimal reduction dose) is the time (or dose of an antimicrobial drug) required, at a given condition (e.g. temperature) or set of conditions, to achieve a one-log reduction, that is, to kill 90% of relevant microorganisms. [1]

  8. Shewhart individuals control chart - Wikipedia

    en.wikipedia.org/wiki/Shewhart_individuals...

    The normal distribution is NOT assumed nor required in the calculation of control limits. Thus making the IndX/mR chart a very robust tool. Thus making the IndX/mR chart a very robust tool. This is demonstrated by Wheeler using real-world data [ 4 ] , [ 5 ] and for a number of highly non-normal probability distributions.

  9. Chemical oxygen demand - Wikipedia

    en.wikipedia.org/wiki/Chemical_oxygen_demand

    The following formula is used to calculate COD: = where b is the volume of FAS used in the blank sample, s is the volume of FAS in the original sample, and n is the normality of FAS. If milliliters are used consistently for volume measurements, the result of the COD calculation is given in mg/L.