[MR] Fwd: care with accusations Re: Pennsic Water Challenge

[Logan]

im not sure if there was light or not.  the head of the unit was square with
a hole in it (not sure if that helps identify it).  i do know that next to
the lcd screen it was marked "ppm" and the manual described its function as
measuring part per million.  hit me off list, ive got some questions if
youre willing.

regards
logan

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-----Original Message-----
From: atlantia-bounces at seahorse.atlantia.sca.org
[mailto:atlantia-bounces at seahorse.atlantia.sca.org] On Behalf Of Craig
Sent: Sunday, July 17, 2011 8:33 AM
To: atlantia at seahorse.atlantia.sca.org
Subject: Re: [MR] Fwd: care with accusations Re: Pennsic Water Challenge

That sounds more like a conductivity meter rather than turbidity, as
turbidity uses a beam of light passing through the sample to determine
scatter.

However, if it was measuring turbidity, and you read the well water at
400 NTU (not PPM), that's not totally unexpected.  Charlotte water at 34
NTU, however, is.  That's a violation of EPA regs, which require drinking
water to have a turbidity of less than 1 NTU.  Same applies to bottled
water, which incidentally is rarely any better than tap water. 
Hopefully the 34 NTU reading was a result of the pipes leading to your test
point, and not the city water itself.  Most city municipalities produce
water that is as pure as bottled water, and they are closely monitored.

Well water, however, isn't that closely checked except for a few parameters,
and could very well be an issue.

-Cian

On 7/17/2011 8:13 AM, Logan wrote:
> its a portable turbidity tester, not for anything specific.  two 
> electrodes shoot an arch and it tests resistance (if i remember the 
> explanation correctly).  when my partner and i built our water 
> purification store it was a piece of equipment that was suggested by 
> the company that built our filtration and storage tanks.  we tested 
> charlotte city water before and after running it through our 
> equipment.  since we ran two reverse osmosis filters the water would 
> always be around 1ppm since few things are smaller than one micron.  
> gases and fecal coliform were removed via the charcoal i guess and 
> bacteria via the uv bath.  and something removed the fluoride, just 
> dont recall what it was.  ;^)
>
> the meter was about 6" long by 1" square if that helps.
>
> regards
> logan
>
>
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