here are two product lines, both listed under "pH Adjusting Products"
in our catalog, which require pH
testing capability: H3O (which
produces an acidic health care product),and HRx,
its alkaline companion, which has entire different functional
features. Both introductory pages for these products (links
just provided) give basic instruction on the use of pH indicator
strips.
Below we list four different
pH indicator strip sets. All four are made by EM Science, an
associate company of Merck KGaA in Darmstadt, Germany. They
are priced at $19.95 per set in our web store.
If you can find them for less in your own locale, buy them there. That's fine, too,
just get them if you need them. A couple of minor caveats are
in order. (1) Accuracy. These test strips are fine for the purposes
for which we expound on our web site. They have an accuracy
of 0.2 to 0.5, and if you use simple "visual interpolation" you
can normally get down to plus or minus 0.1 pH. This is not,
however, the same as representing that test strips even begin to
compete with professional pH testing equipment used in industry.
It does not. Your better pH testing equipment is accurate to
.01 or even .001 pH. Test strips do not even remotely compare
to this. Nonetheless, for your purposes, such minute precision
is an irrelevancy. Simple use them per the protocols we provide.
(2) Color Reproduction. The magnified pH color charts below
will probably give you a less than accurate replication of the
real color of the color chart(s) you receive. This only makes
sense. Every computer monitor yields slightly different results
in its display of color pictures. So don't hold us to perfect
color matching. Below, we provide you with
closeup pictures of the color charts that accompany each pH indicator
test set, along with a thorough description. Note that each picture,
when clicked, gives you an enlargement of the actual product in its
jewel case. Also, note that the product is shown in miniature in
the upper right hand corner of each picture, as well. Lastly,
you might also find that the catalog numbers assigned by the
manufacturer (EM Science) just happen to match our own. This was
done to reduce confusion in handling the product: for our employees
as well as our customers.As always,
email us if you have any questions. |
Code 9590 -- ColorpHast® pH indicator strips Non-bleeding, pH 0-14, 100 strips to a set ($19.95) Usage: Of the four sets, this is
the only one that is not "narrow range." It covers the entire pH scale from
0.0 to 14.0, but it is the least accurate. Even with visual interpolation,
you aren't going to get any more accurate than plus or minus 0.3 or so.
However, this set is probably the easiest to use. Instead of one color
for each pH position, you get four. This allows you to visually pin down
the pH much quicker. For either the H3O
or HRx products, this set would cover all
functions. The trade off, however, is obvious. It is, by far, the
least accurate. 
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Code 9580 -- ColorpHast® pH indicator strips Non-bleeding, pH 0-2.5, 100 strips to a set ($19.95) 
Usage: This product is introduced
in the H3O section, and is used to measure the
pH of your H3O finished solutions. This is important because various
characteristics of H3O are driven by pH. For instance, some of the
recommended uses are in the 1.6 range; others, 2.0. You will want to
keep this pH set handy when you are preparing solutions more precisely
in the high acid range. |
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Code 9582 -- ColorpHast® pH indicator strips Non-bleeding, pH 4.0-7.0, "Narrow range," 100 strips to a set ($19.95) Usage: This slightly to medium acidic
pH test set should be used by those using the HRx solution.
When dipped into the testing medium (i.e. in this instance, saliva or urine), it
will yield, using visual interpolation, a reading approximately accurate to
0.1 pH.
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Code 9583 -- ColorpHast® pH indicator strips Non-bleeding, pH 6.5-10.0, "Narrow range," 100 strips to a set ($19.95) Usage: This set covers slightly
acidic to medium alkaline. We recommend it for use with HRx
solutions so you can adjust your solution to the recommended pH of your
finished hydroxide solution: 9.0 pH.
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