ISO 4833-1:2013

ISO 4833-1:2013

September 2013
International standard Current

Microbiology of the food chain - Horizontal method for the enumeration of microorganisms - Part 1 : colony count at 30 °C by the pour plate technique

ISO 4833-1:2013 specifies a horizontal method for enumeration of microorganisms that are able to grow and form colonies in a solid medium after aerobic incubation at 30 °C. The method is applicable to: a) products intended for human consumption and for animal feed; b) environmental samples in the area of food and feed production and handling. ISO 4833-1:2013 is applicable to: 1) products that require a reliable count when a low limit of detection is specified (below 102/g or 102/ml for liquid samples or below 103/g for solid samples); 2) products expected to contain spreading colonies that obscure colonies of other organisms, e.g. milk and milk products likely to contain spreading Bacillus spp. The applicability of ISO 4833-1:2013 to the examination of certain fermented food and animal feeds is limited and other media or incubation conditions can be more appropriate. However, this method can be applied to such products even though it is possible that the predominant microorganisms in those products are not detected effectively. For some matrices, the method specified in ISO 4833-1:2013 can give different results to those obtained using the method specified in ISO 4833‑2.

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Main informations

Collections

International ISO standards

Publication date

September 2013

Number of pages

9 p.

Reference

ISO 4833-1:2013

ICS Codes

07.100.30   Food microbiology

Print number

1 - 30/08/2013
Sumary
Microbiology of the food chain - Horizontal method for the enumeration of microorganisms - Part 1 : colony count at 30 °C by the pour plate technique

ISO 4833-1:2013 specifies a horizontal method for enumeration of microorganisms that are able to grow and form colonies in a solid medium after aerobic incubation at 30 °C. The method is applicable to: a) products intended for human consumption and for animal feed; b) environmental samples in the area of food and feed production and handling.

ISO 4833-1:2013 is applicable to: 1) products that require a reliable count when a low limit of detection is specified (below 102/g or 102/ml for liquid samples or below 103/g for solid samples); 2) products expected to contain spreading colonies that obscure colonies of other organisms, e.g. milk and milk products likely to contain spreading Bacillus spp.

The applicability of ISO 4833-1:2013 to the examination of certain fermented food and animal feeds is limited and other media or incubation conditions can be more appropriate. However, this method can be applied to such products even though it is possible that the predominant microorganisms in those products are not detected effectively.

For some matrices, the method specified in ISO 4833-1:2013 can give different results to those obtained using the method specified in ISO 4833‑2.

Replaced standards (1)
ISO 4833:2003
February 2003
International standard Cancelled
Microbiology of food and animal feeding stuffs - Horizontal method for the enumeration of micro-organisms - Colony-count technique at 30 °C

<p>ISO 4833:2003 specifies a horizontal method for the enumeration of microorganisms, by counting the colonies growing in a solid medium after aerobic incubation at 30 degrees Celsius. Subject to some limitations, it is applicable to products intended for human consumption or the feeding of animals.</p> <p>The applicability of ISO 4833:2003 to the examination of certain fermented food and animal feeding stuffs is limited. For the examination of fermented food and animal feeding stuffs, other media and/or incubation conditions might be more appropriate.</p>

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