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Stiffness Tester For Paper

PST – 001

Presto’s stiff resistance tester is the perfect tool to measure the flexural strength of the paper and linear boards or paper boards. Assessing this property is important as it decides the economic value of the paper. It complies with the testing standards of TAPPI – T489 OM-08. It measures the flexural rigidity of the test sample very precisely. This is one of the best methods to determine the quality of the paper and paper boards. The resistance of paper depends on various factors like its composition at the time of manufacturing.


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To test the paper, the specimen is mounted on the tester using the clamping system. Located at the pendulum, the lower faces of the clamp jaws are at the centre. The jaws adjust themselves according to the different thickness of the test paper. To get the accurate test results, the test and angle of deflection are kept constant. To get the value of the test, the load is applied on the lower end of the specimen. It is the perfect way to determine the quality of the paper. Stiff resistance tester helps in segregating the substandard paper from the high quality. It is one of the most important test instrument used in paper industry. Presto offers this instrument at very competitive prices. Calibration certificate is provided along with the instrument. This certificate is valid for one year.

    • Weight of pendulum – 500, 1000, 2000, 3000, 5000 SU
    • Weight of stud – 10 ± 0.001gm
    • Sample size – 70 ± 1mm X 38.1 ± 0.3mm
    • Unit scale range – 0 – 100
    • Angle – 7.5°, 15°
    • Motor – 2 RPM
    • Power – 220V, 50Hz, single phase

    • Dimensions of the instruments is 300X32X440mm
    • The friction of pendulum is based on high procession bearing.
    • The main body is made up of mild steel or aluminium
    • It has combination finish and bright chrome plating
    • It has 2 clamps. 1 is ratchet style and other is the flat
    • The instrument stands on telescopic legs

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