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[compost_tea] Re: Testing tea has to be done properly.....



---Thanks Paul.  There is some difference though, between the 
samples.  I have to go back to conversion tables to get 
micrograms/mls to bacteria/ml and I'd GUESS 8.1 micrograms/mls is a 
bunch of bacteria in 300 gallons finished product or more importantly 
in the 15-25 gallons applied/acre..Being familiar with only standard 
plating techniques I haven't been able to discern how  SFI 
differentiates active and total but am eagerly waiting to learn. 
Thanks again though.  I can't help but notice some of your samples 
total bacteria are in thousands(ug/ml) while others are in hundreds. 
Did you post differences between recipes,procedures, etc of samples? 
And also I notice all your samples are well into the desired range, 
if not way beyond!  That's gotta be exciting.  Dennis









 In compost_tea@yahoogroups.com, <pdsachs@l...> wrote:
> Dennis,
> 
> If you go to http://www.norganics.com/tests.html look at the two 
test
> results for 5/16/03.  The first was taken at the end of the brew 
cycle and
> put in the refrigerator until Fed Ex came to pickup.  The second 
sample
> (from the same batch) was left aerating for four hours after the 
first
> sample was drawn.  I didn't see a significant difference.
> Paul Sachs
> >
> >
> >
> >
> > ---Great topic Jeff. I was wanting to ask some of these questions.
> >
> > Maybe you need duplicates??????? Does anyone cool smpls before
> > shipment( like until shipment to SFI)?&nbsp; The dairy industry 
stores
> > micro (raw milk)samples on ice enroute to lab and micro samples 
must
> > be plated(tested) not later than 36 hours after collection......Of
> > course they have their way of doing things!!!!
> > &nbsp;&nbsp;&nbsp;&nbsp; Has anyone taken samples before and after
> > filters and/or nozzle  tips to determine effect of filters and 
tips?
> > Dennis from the crusty  old food lab
> >
> >
> >
> >
> >
> >
> >
> >
> > In compost_tea@yahoogroups.com, &quot;Jeff Lowenfels&quot;
> > jeff@g... wrote: &gt; Folks, how are you taking samples for
> > testing??????Some folks are&nbsp;  having trouble duplicating 
results
> > using the same stuff.....
> > &gt;
> > &gt; The correct way is to get a REPRESENTATIVE tea&nbsp; sample. 
You
> > need to  keep the machine going,&nbsp; take five or so small 
samples
> > and that is  what gets tested.&nbsp; If you are decanting the tea 
and
> > taking samples  from the solids in the bottom, that is 'cheating' 
and
> > gives
> > unrepresentational higher fungal numbers.....this is not the way 
to
> > go.
> > &gt;
> > &gt; Cheers,
> > &gt;
> > &gt; Jeff
> >
> >
> >
> >
> >
> >
> >
> >
> >
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