Product Introduction1. IntroductionThe tester is used to determine the rupture strength and rupture index of paper. The tester can be configured to meet any ISO, GB, ASTM or other International specifications for paper, foils, paper boards and corrugated board etc. The main instruments are suitable for cardboard manufacturers, paper mills, scientific research institutions, etc.2. StandardsISO 2758, GB 4543. Test Principle The sample is firmly fixed on the edge of the circular area by a pneumatic clamping device, and then the tester is turned on, and the pressure is gradually increased at a speed of (95 ± 5 ml/min). When the hydraulic fluid is pumped in at a stable rate, the sample is The glue film bulges freely together, until the sample breaks, the maximum value of the applied hydraulic pressure is the breaking strength value of the test piece.4. FeaturesPneumatic sample clamping, adjustable clamping forceEquipped with aluminum foil for self-calibrationEquipped with air filter/regulatorColor touch screen5.SpecificationsMeasurement  range5~1600kpaResolution0.1kpaAccuracy± 0.5%Clamping force20 -1200 kPaHydraulic transducer3MPaOperation MethodAutomaticDisplay7in touch screen6. Installation RequirementsElectrical220V/50HzPower120WAir0.6 MPa (87 psi)Air ConnectionØ8 mm PU TubeDimensions  D×W×H410 × 340 × 505 mm / 16.14 × 13.39 × 19.88 inNet  Weight32kg / 70.6lbs7. OutputThermal Printer8. Standard AccessoriesFive sheets of correction aluminum foil, two sheets of rubber membrane, a special wrench, a bottle of 250ml silicone oil, four rolls of printing paper, a 2m Ø8mm PU tube, a power cord 9. Optional AccessoriesCorrecting Aluminum Foil, Rubber Membrane, Air compressor, Silicone oil, Printer Paper  
https://www.hengkeinstrument.com/paper-testing-equipment/