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: vinegar . was re: stinky paper clay

updated wed 10 jun 09


ivor & olive lewis on tue 9 jun 09

Dear Lee Love,

You tell us

<than vinegar?..>

All citrus fruit contains juice that has Citric acid as an ingredient .
Which probably explains why Ron and John advocate Lemon juice as a
qualitative test for glaze stability.

So what would make Lime juice "stronger" than Lemon juice and what units ar=
you using to measure its strength ? Are you considering Hydrogen Ion
Concentration or is this a case of a greater weight of citric acid per litr=
of citric acid in lime juice ? What does the label tell you ?

Best regards,

Ivor Lewis,
South Australia

Lee Love on tue 9 jun 09

On Tue, Jun 9, 2009 at 2:01 AM, ivor & olive lewis w=

> So what would make Lime juice "stronger" than Lemon juice

I don't know why. I would guess that it is due to the concentration
of citric acid (no brainer.) I posted the chart of household ph
previously. Your task, is to find it in the archives. (Kiddin'! You
are the one that makes assignments. I searched for you. See below.)
As you can see below, lime juice is much stronger than vinegar.
Actually, vinegar is often diluted.

From the Ohino State University site:

* 1.0 battery acid (sulfuric acid)
* 1.8-2.0 limes
* 2.2-2.4 lemon juice
* 2.2 vinegar (acetic acid)
* 2.8-3.4 fruit jellies
* 2.9-3.3 apple juice, cola
* 3.0-3.5 strawberries
* 3.7 orange juice
* 4.0-4.5 tomatoes
* 5.6 unpolluted rain
* 5.8-6.4 peas
* 6.0-6.5 corn
* 6.1-6.4 butter
* 6.4 cow's milk
* 6.5-7.5 human saliva
* 6.5-7.0 maple syrup
* 7.0 distilled water
* 7.3-7.5 human blood
* 7.6-8.0 egg whites
* 8.3 baking soda
* 9.2 borax
* 10.5 milk of magnesia
* 11.0 laundry ammonia
* 12.0 lime water
* 13.0 lye
* 14.0

Original link above is dead. I found it in the archives at Wayback machin=

or here if above is broken:

Lee Love, Minneapolis
"The tea ceremony bowl is the ceramic equivalent of a sonnet: a
small-scale, seemingly constricted form that challenges the artist to
go beyond mere technical virtuosity and find an approach that both
satisfies and transcends the conventions." -- Rob Sliberman
full essay: