In article <5A05EB65AC8 at microb.umd.edu>, ASMITH at MICROB.UMD.EDU ("Ann C.
Smith") wrote:
> Dear All
> An undergraduate has just approached me requesting to test water
> samples for a local environemtal group. I am familiar with the
> basics of testing for fecal coliforms, but I have never applied the
> technque in the real world. Which is considered the most reliable -
> the filtration technique with cultivation of filter in MF-endo media
> or the traditional MPN technique followed by plating of samples on
> EMB agar?
You can buy pre-prepared "distick" testers from a variety of companies
(e.g., Millipore); then all you need is an incubator. The incubator
needed for fecal coliforms must be tightly controlled (generally a water
bath is used. Therefore, I would recommend that you might look at total
coliforms.
>> He also is interested in testing for dissolved nitrogen and
> phosphorous. Any suggestions for methods to detect these?
> Thanks!
> Ann
Get a catalog from Hach Chemical Co., Loveland CO -- they manufacture a
variety of quite simple test kits for various water quality parameters.
**************************************************************************
from the keyboard of: Charles N. Haas:LD Betz Professor of Environmental Engineering
Drexel University:::Philadelphia, PA 19104
HaasCN at Dunx1.ocs.drexel.edu OWNER: ENVENG-L at TEMPLEVM.BITNET
[INSERT USUAL DISCLAIMER HERE]
**************************************************************************
