Would like to know from food microbiologists, how do they weigh powdered samples? or handle a particular sample while weighing?
What tools/accessories do they use while sampling asceptically?
Posted 19 January 2017 - 11:54 AM
Would like to know from food microbiologists, how do they weigh powdered samples? or handle a particular sample while weighing?
What tools/accessories do they use while sampling asceptically?
Posted 19 January 2017 - 12:20 PM
what are you weighing it for? is it for a negative/ positive test eg pathogen or a its a gereral count like APC?
i dont know if my question has significance in answering you but please explain some more?
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Posted 19 January 2017 - 12:23 PM
Dr Vu,
I need to weigh powdered spices like turmeric, coriander, chilli samples, for test like TVC, coliform and salmonella etc, I want to know about accessories for ascepting sampling used in various industries on lab scale?
Like we used paper; which does not comes in sterile sampling.
Posted 19 January 2017 - 12:57 PM
sorry this is not my forte byut will try to give you my 2 cents
are you doing the test or you will send out? if you will send out then all you have to do is know your minimum weight samples needed by the lab and do your own prep by scaling inhouse like 3 scoops of saffron gives approx 150g etc. then you add another 1/2 scoop extra .. and let the lab weigh the stuff when they receive it
all you need is your gloves which you will have to change sample-too-sample, some sterile bags and some cleaned sanitized hygienic utensils
plus your sampler must be really trained otherwise you will accept / reject when its not necessary
Posted 20 January 2017 - 09:26 AM
No I am weighing myself at lab scale for testing purpose. And Like what tools or accessories should be considered to aid for microbiological sampling? This is my question.
Posted 20 January 2017 - 11:42 AM
Dr Vu,
I need to weigh powdered spices like turmeric, coriander, chilli samples, for test like TVC, coliform and salmonella etc, I want to know about accessories for ascepting sampling used in various industries on lab scale?
Like we used paper; which does not comes in sterile sampling.
Hi wafa,
Hopefully this answers yr queries -
micro - cutting and weighing samples.pdf 180.8KB 17 downloads
https://www.fsis.usd...atory-guidebook
This famous FDA micro. resource is also highly informative -
http://www.fda.gov/F.../ucm2006949.htm
Micro. labs normally employ qualified personnel. I'm sure they will also be competent to answer yr operational queries.
Kind Regards,
Charles.C
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Posted 25 January 2017 - 10:28 PM
Depends on what you are sampling from. Ease of access and reach need to be considered.
There are triers that can be used for harder to access products for sampling or a more representative sample. There are triers that come in a wide variety of sizes for appropriate sampling and specifically for powder based samples.
http://www.sampling....owdertrier.html
Less expensive option would be a scoop that is easily cleanable. These also come in pre-sterilized plastic bags, or there are scoops you can sterilize in your autoclave. The downside of scoops is hard to use in difficult to access materials and they are not as representative as the trier. They only take what is on the top portion. However, they are very easy to use.
For containment of the samples I recommend whirl-pak bags. Easy to use, cheap, and sterile.
Posted 12 February 2017 - 05:39 PM
U can used Sterilized Spoons
and spatula
Sterilize them Using Hot Oven packed in aluminium foil
or 70% ethyl alcohol then ignition
Answered
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