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pH Litmus Paper: Test Alkaline, Ionized Water
The pH of pure, freshly distilled water is neutral, i.e. pH 7.0. However, water exposed to
air rapidly dissolves atmospheric CO2 (carbon dioxide) which forms carbonic acid. This weak acid will lower the
pH of water to below 6. If you are buying alkaline water or ionized water for pH therapy, be sure to test
it regularly to make sure it meets its alkaline pH 8-9 specifications. Unscrupulous vendors may sell you old stock that is no
longer alkaline or test strips that have been to altered to measure very weak alkalinity. If you are not sure whether the strips
are measuring correctly, try testing with lemon juice (for acid) & ammonia ("Windex") for alkaline. You can also add a spoonful of
either to a glass full of ionized/alkaline water to see if it causes a change.
Blue litmus paper turns red in an acid solution, red litmus turns blue in an alkaline solution.
You can use these acid-base strips in place of litmus paper since they give a fast easy answer whether something is
acidic, neutral or basic over a similar range.
Note(1): The number of strips per pack or vial is approximate.
Note(2): You can use the 5-9 strips for urine/saliva but because these strips only measure in steps of 1, not 0.5, we recommend the
5.5-8 for that application. Also, urine & saliva rarely, if ever, measure <5.5 or >8.
Test Specifications; How to Use
- Dip strip in solution for 1-2 seconds; compare to color chart
- Solutions must be aqueous (water based)
- For soaps, wet the strip first; oils cannot be tested
- Deeply colored solutions can cause inaccurate readings
- 2+ year shelf life if kept sealed & out of direct sunlight
- Papers are non-bleeding so can be dipped for several minutes
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