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Re: [APD] drop checker for CO2

Well, I was all set to raise the flag and claim to have invented  
this, but I quickly realized that the idea came from the second  
person, Gomer,  to post on the original ADA Drop Checker device  
thread on APC.  I chose not to be embarrassed by having someone point  
that out.  Now I am realizing that you can use Phenol Red as the  
indicator, also cheap, and the unit will read in yellow-orange-red,  
for those with certain color sensing difficulties.  For that you just  
need the KH to be 20 degrees.  Maybe Greg Watson would like to stock  
a cheap version of this device, and sell it with bottled fluid of the  
right KH with the indicator already in it?  But, he already does so  
much for us I won't ask him.

Vaughn H.

On Oct 16, 2006, at 7:15 PM, Thomas Barr wrote:

>> Just because it is simple, non-electronic, and an old device,
>> does
>> not keep this from being a great idea!   (It isn't my idea,
>> incidentally, although I wish it were.  All I have done is
>> recognize
>> why it works, try it out, and publicize it.)
>> Vaughn H.
> You mean you do not make claim and appropriate it as your own?
> :-)
> Regards,
> Tom Barr

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