Re: pinhole : black bean juice & turmeric

Date view Thread view Subject view Author view Attachment view

From: Rilla Chaney (rmchaney@comcast.net)
Date: Thu Feb 12 2004 - 07:42:45 PST 

Message-ID: <402B9EF5.15FB052A@comcast.net>
Date: Thu, 12 Feb 2004 07:42:45 -0800
From: Rilla Chaney <rmchaney@comcast.net>
Subject: Re: pinhole : black bean juice & turmeric

I have had good luck with turmeric, but only for bases. Age and price of the
turmeric don't seem to matter. I have made test paper by soaking filter paper in
turmeric water, and it works well.

Rilla Chaney

ASKDRSP@aol.com wrote:

> Greetings All,
>
> First of all, thank you once again to the pinholer who mentioned the black
> bean juice as a great acid/base indicator. IT is much easier than cabbage juice.
>
> I was wondering, though, if anyone has a chemical formula for explaining what
> in the black bean juice reacts with the hydroniums for the acids and the
> hydroxides for the bases?
>
> Also, I tried the turmeric that was also suggested, last year I think. I did
> not get very good luck with that. Maybe I was using too inexpensive of a
> turmeric?
>
> Thanks for any help that can be given.
>
> Take care,
> Sue Pritchard
>
> ---------------------------------------------------------------------------
>
> To unsubscribe from pinhole, send an email to requests@exploratorium.edu
> with the words 'unsubscribe pinhole' (without the quotes) in the SUBJECT
> of the email.
>
> To subscribe to the digest and only get 1 combined message a day, send an
> email to requests@exploratorium.edu with the words 'subscribe digest
> pinhole' (without the quotes) in the SUBJECT of the email.
>
> Check out what your colleagues have written on Pinhole in the Pinhole
> archives at: http://saturn.exploratorium.edu/ti/alumni/pinhole.html
> ---------------------------------------------------------------------------

Date view Thread view Subject view Author view Attachment view

This archive was generated by hypermail 2.1.3 : Mon Aug 02 2004 - 12:05:35 PDT