Re: [compost_tea] Re:Testing ACT

From: Ted Peterson <ted.peterson_at_tcsn.net>
Date: Wed, 21 Apr 2004 22:32:26 -0700

Are you writing about tea or compost? At any rate, we don't need more than=
 one State/Federal certified lab. If that lab has certification, a differe=
nt lab that is also certified will get the same results. If you want to us=
e a lab you haven't used before, I highly recommend A&L Agricultural Labs i=
n Fresno, CA. If you want to find different labs close to you, call your W=
WTP and find out which lab they use. WWTPs have to use State and Federally=
 certified labs.

You can purchase tests for e coli and salmonella that will give you trendin=
g. E coli is used as an indicator bacteria. If you find E coli and/or salm=
onella, it means that there are probably a whole host of other pathogens al=
so present. Kill of the E coli and you probably also kill off the other pa=
thogens.

Labs are remarkably stingy with test results. The best result you are like=
ly to get for any pathogen is N.D. or > .02%. It means they are not detece=
ted but there might be one somewhere in the whole mass you taking the sampl=
e from.

Ted Peterson
EW/SOE
  ----- Original Message -----
  From: dkemnitz2000
  To: compost_tea_at_yahoogroups.com
  Sent: Wednesday, April 21, 2004 6:39 PM
  Subject: [compost_tea] Re:Testing ACT


  Since CTTF is so concerned about pathogens how about we send split
  samples to 3 or 4 labs, regularly. Sample aesepticly,ice 'em
  down,and require they be tested within 36 hours of sampling. Working
  in a lab I don't see any reason to trust just one lab. Many micro
  tests are subjective.Chemistry maybe not quite so subjective but both
  definitely depends on good lab procedure. Dennis



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Received on Thu Apr 22 2004 - 10:24:33 EDT

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