Micro Essential has manufactured Hydrion® test papers since 1934. Their Hydrion papers set the standard for quality, accuracy, and reliability. The product line of Hydrion® pH test papers and pH buffer standards are used in laboratories, hospitals and universities, worldwide.  

The Hydrion Mechanical pH Pencil measures the pH of any surface to the nearest full pH value. The Hydrion pH pencil can be used to test irregular or uneven surfaces, and is also effective on porous material and impervious solids. It offers clear bright single colour matches at every 1.0 interval from pH 0.0-13.0.

The colour chart has pH matches at 0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0

The pH Pencil is used to detect acid or alkali residues and may be used to measure the pH of Paper, Lumber, Concrete, Cement, Plasterboard, Pre-painted surfaces, Painted Surfaces, Textiles, Skins, and Ceramics.

Each box contains 3 mechanical pencils and 3 colour charts. Each pencil will give the user at least 100 tests.

How To Use The Mechanical pH Pencil

To measure the surface pH just wet the surface with distilled water. Stroke the surface with the pencil. Wait approximately 15 seconds and compare the resulting colour change with the colour chart.

To advance pencil lead, simply turn the pencil top clockwise.

Now shipping to Australia