Getting enough Vitamin C? These test strips give fast accurate results for ascorbic acid levels in fruits, vegetables, juices & even urine; only $21.95 pack/100; discounts for quantity.
These test strips are calibrated with vitamin C dissolved in water which you can also do with store bought tablets. This is useful for controlled science experiments and for comparing against different fruit & vegetable juices or urine.
Vitamin C levels are shown as percentages where 0.01% equals 10mg/100ml & 0.1% equals 100mg/100ml. A 1000mg vitamin C tablet dissolved in 1000ml of water should give you a reading of 0.1%.
Fruit juices that claim 100% or more of recommended daily allowance (RDA) may read higher than the strips can measure so you might need to dilute the juice. e.g. 9 parts water & 1 part of juice will reduce the concentration to 1/10 the original.
The color chart below shows what you might expect if there is a lot of citric acid in the juice. The citric acid can make the strips look more purple than blue. You can test the acidity of different fruits, try these pH 0-7 acid test strips.
Follow this link for a list of names of Acids in Fruits and Vegetables, Any of these acids can affect the response of the test strips although citric acid should be the most prominent. If you are interested in testing the acidity of different fruits, try these pH 0-7 acid test strips.
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