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Canadian standard freeness (CSF) tester TAPPI T227

The Canadian Standard Freeness (CSF) Tester is used to determine the rate of drainage of a dilute pulp suspension and express it in terms of freeness.

The standard freeness tester (CSF) is widely used in the inspection of the pulping process in the papermaking industry, the formulation of the papermaking process, and the various paper pulping experiments of scientific research institutes. It is an indispensable test equipment for the study of pulping and papermaking.

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Working Principle

Under the specified conditions, use a Canadian freeness tester (CSF) to measure the filtration performance of 1000mL slurry water suspension with a content of (0.3±0.0005)% and a temperature of 20°C, the CSF is expressed in the term of measured volume of outflow water.

The Canadian standard freeness tester provides a test value suitable for the production control of groundwood pulp; it can also be widely used for changes in the filterability of various chemical pulps in the process of beating and refined pulp; it reflects the surface condition and swelling condition of the fiber.

Structure

The freeness meter includes a water filter chamber and a measuring funnel that divides proportionally, and is installed on a fixed bracket. The water filter chamber is made of stainless steel. The bottom of the cylinder is a porous stainless steel sieve plate and an airtight sealed bottom cover, which is connected to one side of the cylinder with a loose leaf and fastened to the other side. The top cover is sealed, open the bottom cover, the pulp flows out. The cylinder and the filter cone are respectively supported by two machined bracket flanges with openings on the bracket.