Microbiological sampling for bottling plant producing mineral water
Dear Colleagues!
I am presently audting a mineral water bottling plant in China. all bottles are PET bottles and they have some infection despite a lot of 0,22 micron filters. They take a hugh amount of samples to try to be in control. The funny thing is that they only incubate sampels at 37 oC - not 20-22 oC. Does some of you have a well working microbiological sampling plan?
It should be mentioned that it is spring water from a natural souce.
kind regards
Bryggerbreum
Dear Colleagues!
I am presently audting a mineral water bottling plant in China. all bottles are PET bottles and they have some infection despite a lot of 0,22 micron filters. They take a hugh amount of samples to try to be in control. The funny thing is that they only incubate sampels at 37 oC - not 20-22 oC. Does some of you have a well working microbiological sampling plan?
It should be mentioned that it is spring water from a natural souce.
kind regards
Bryggerbreum
Hi Bryggerbreum,
EC standard has specification for APC/drinking water at both temperatures 22degC and 37degC.
IMEX use of 37degC not unusual.
22degC requires a more specialized incubator.
One sampling plan is here -
CELEX_31998L0083_EN_TXT.pdf 295.28KB 39 downloads
Hej Charles!
Thanks for the sampling plan. It is also here specified that incubation at 22 oC as well as at 37 oC has to be done. This it what I normally would expect. The funny thing .- here in China - is that they only incubate at 37 oC, which for me gives a risk of false readings if you do not get an idea of the level of normally harmless bacteria at 22 oc.
Have a nice weekend
Peter A. Breum