PH Paper

pH Paper is a simple laboratory indicator used to quickly evaluate whether a liquid sample is acidic, neutral or alkaline.

The indicator changes colour after contact with the sample. The user compares this colour with the reference scale supplied with the product and obtains an approximate pH value.

Liya Test offers the LT-G0863 pH Paper with a broad pH 0–14 range.

pH 0–14 Measurement Range

The LT-G0863 model covers the complete general pH scale from 0 to 14.

Values below 7 generally indicate an acidic solution, while values above 7 indicate an alkaline solution. A value around 7 represents a neutral condition under typical aqueous measurement conditions.

This wide range makes the indicator paper practical for rapid preliminary checks of different liquid samples.

Rapid Laboratory pH Control

pH Paper is especially useful when a quick indication is required without preparing an electronic measuring instrument.

The user places the indicator in contact with the sample according to the product instructions. After the colour develops, the result is compared with the reference colour chart.

This method provides a fast approximate pH indication.

For applications requiring greater numerical accuracy, a properly calibrated electronic pH meter should be preferred.

pH Meter Calibration Solutions

The same product group also includes pH Meter Calibration Solutions.

Liya Test provides three different capacities:

LT-G0864 – 100 mL
LT-G0865 – 250 mL
LT-G0866 – 500 mL

These solutions support routine calibration and verification procedures for pH meters.

The different bottle sizes allow laboratories to choose an appropriate quantity according to their measurement frequency and consumption requirements.

Why Is pH Meter Calibration Important?

Electronic pH meters require regular calibration to maintain consistent measurement performance.

During calibration, the instrument is checked against suitable reference solutions. This helps the laboratory identify measurement drift and maintain a more controlled pH measurement process.

The exact calibration frequency depends on the instrument, laboratory procedure and required measurement accuracy.

Indicator Paper or pH Meter?

Both methods serve different purposes.

pH Paper provides a fast and simple approximate indication. It can be useful for preliminary checks, routine screening and situations where high numerical precision is not required.

A pH meter provides a numerical reading and is generally more appropriate when precise measurement is necessary.

Therefore, laboratories may use indicator paper for quick control and a calibrated pH meter for more detailed analysis.

Choosing the Correct Product

The appropriate product depends on the required application.

For rapid acidity and alkalinity checks, the LT-G0863 pH Paper offers a practical 0–14 range.

For pH meter maintenance and calibration procedures, users can select the 100, 250 or 500 mL calibration solution according to laboratory consumption.

The supplied technical information does not specify the exact buffer pH values of the calibration solutions. Therefore, values such as pH 4.00, 7.00 or 10.00 should not be stated unless confirmed by the product documentation.

Overall, the pH Paper and pH Meter Calibration Solution range supports both rapid pH screening and routine electronic pH measurement procedures. The 0–14 indicator range and three calibration solution capacities provide practical options for different laboratory workflows.