pH Indicator Paper (1 to 14) – Packs and Rolls

Quick Answer: The pH Indicator Paper (1 to 14) is universal indicator paper carrying a mixture of dyes that gives a different colour at each pH from 1 to 14; a strip wetted with a sample is matched against a colour chart to estimate pH to about one unit, and the paper is supplied in packs and rolls.

Reading a Full-Range Strip

A single indicator changes colour over only one or two pH units. Full-range paper combines several indicators whose transitions follow one another along the scale, so together they produce a sequence running from red for strong acids, through orange, yellow and green near neutral, to blue and violet for strong alkalis. Matching the strip to the chart therefore gives an approximate pH rather than just ‘acid’ or ‘alkali’.

This listing is the pack-and-roll version of full-range paper. A roll, usually wound in a small dispenser, lets a teacher or technician pull out and tear off a short length for each test, while packs of strips are handier for issuing to a whole class. The chemistry section of the site also lists pH Paper, Wide Range in booklet form, which serves the same purpose in a different format.

For results closer than one unit, move on to narrow range paper or a meter. For an unknown sample, pH indicator paper 1 to 14 remains the right first test, because it shows which part of the scale the sample is in.

Applications

• Measuring the approximate pH of household substances in the classroom pH scale lesson.
• Surveying tap, rain, river or pond water in environmental science projects.
• Checking soil extracts in agriculture and gardening practicals.
• Finding the pH region of an unknown before selecting a narrow range paper.
• Checking that neutralised waste solutions are near pH 7 before disposal.

Specifications

Care & Handling

• Tear off a short piece and apply one drop of sample; soaking the strip washes dye out and blurs the colour.
• Compare the colour within a few seconds, before it shifts as the strip dries.
• Keep the dispenser lid or pack closed to protect unused paper from lab fumes and humidity.

Why Choose LabEquip

Primary and secondary schools, environmental clubs and general laboratories buy full-range paper because it answers most everyday pH questions. LabEquip supplies packs and rolls through its General Lab Products range, and orders sized for a school year can be discussed on the contact page.

Frequently Asked Questions

What colours does pH 1 to 14 paper show?

The colours run roughly from red at strong acid, through orange and yellow, to green near neutral, then blue and violet at strong alkali. Exact shades vary between products, so always use the chart supplied with the paper.

How accurate is full-range pH paper?

It estimates pH to about one unit. That is enough to classify a solution and compare samples, but a pH meter or narrow range paper is needed for closer values.

Is this the same as the wide range pH paper in the chemistry section?

Both cover the full scale for general testing. This listing is offered in packs and rolls, while the wide range paper there is shown as booklets, so the choice is mainly about format.

Can I test soil with pH paper?

Yes, by testing a soil extract. Shake soil with distilled water, let it settle, and test a drop of the clear liquid. The paper should not touch the soil directly.

Why does my reading fall between two colours?

The sample’s pH probably lies between two chart values. Record it as a range, or retest with a narrow range paper covering that region.

What spoils pH paper in storage?

Humidity, direct light and acid or ammonia fumes all shift the dyes. Paper that has changed colour before use should be discarded.

Last Updated: September 2026