pH 1-14 Test Papers for Science Fair Experiments

The wide range, pH 1-14 test strips have 2 important but very different applications.

They only measure in pH 1 step increments and are best used when you have absolutely no idea whether your solution is acid or base. If you need more precision, use these first to determine which of our other acid or base test strips you should use to measure more accurately, in 0.5 pH steps.

These are ideal for science fair demonstrations if want to compare the pH of many different foods or drinks. They are also perfect for showing that the pH scale is logarithmic. In other words, you can take a strong acid like HCl or strong base like NaOH & dilute by a factor of 10 which will change the pH by "1".

These pH test strips feature a triple pad on each measuring stick. This is to ensure the best contrast & color comparison under different lighting conditions. Depending on the pH you are measuring, one, two or all three of the pads may change.

After dipping the strip, compare the 3 colors to find the closest match. With practice and using the same light source every time, you may be able to infer pH changes of less than 1 pH unit.

Note that the changes can be subtle & may appear different under fluorescent, incandescent or sunlight. So, an experiment done at home in the kitchen might look a little different in the school gymnasium during science fair.

Note(1): The number of strips per pack or vial is approximate.

Note(2): The image shows the new 100/pack; the 50/pack is available while quantities last.

P/N	Description	Unit
33811	pH acid alkaline paper, 1-14, triple pad, ~50 strips/pack	1-9	8.95
		10-99	8.80
		100+	8.70
33811-0114	pH acid base paper, 1-14 (1 pH step), 3 pad, ~100/pack	1-9	14.95
		10-99	14.70
		100+	14.60

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