Sulphitometers

Sulphitometers

Sulphitometers are instruments used in the paper and pulp industry to measure the concentration of sulphur dioxide (SO2) in the process liquor. Sulphur dioxide is an important chemical used in the production of paper and pulp, as it helps to break down the lignin in wood chips, which allows the fibres to be separated and processed into paper. However, excess amounts of SO2 can be harmful to the environment and to human health, making it important to monitor and control its concentration in the process liquor. Sulphitometers work by measuring the amount of SO2 gas that is released from a sample of the process liquor. The sample is mixed with an acid solution, which causes the SO2 to be released as a gas. The gas is then drawn into a calibrated tube, where its concentration is measured using a colorimetric method. The resulting reading is used to determine the concentration of SO2 in the process liquor. Sulphitometers are an important tool in the paper and pulp industry, as they allow operators to monitor and control the concentration of SO2 in the process liquor. This helps to ensure that the production process is efficient and environmentally sustainable, while also ensuring the safety of workers and the surrounding community.

Sulphur dioxide, Paper and pulp industry, Lignin, Concentration, Colorimetric method

— Anthony Moore

CITATION : "Anthony Moore. 'Sulphitometers.' Design+Encyclopedia. https://design-encyclopedia.com/define/sulphitometers?E=400267 (Accessed on October 14, 2026)"