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Gibitre Instruments’ certified test blocks allow for the verification of hardness tester compliance between calibrations, in accordance with ISO 48-4:2018 (clause 10.2), which requires weekly verification of instruments against standard rubber blocks. Since hardness is a critical parameter for product compliance, interim checks help keep the material measurement process under control and reduce the risk of errors.
The special shape of the test blocks allows them to be handled without transferring heat to the measurement area, ensuring stable results. Each test block is individually identified by a label, ensuring clear traceability and preventing mix-ups or incorrect readings. The package includes a protective wooden box that shields them from temperature fluctuations and sunlight, preserving their performance. A Calibration Report is included, traceable to the certified instrument used for the measurement.
Choosing Gibitre Test Specimens means equipping yourself with practical, traceable references for quick and regular checks on durometers, ensuring continuity, compliance, and confidence in hardness measurements.
The use of certified samples permits to perform periodical verification of the conformity of the reading of your hardness testers in the period between two calibrations.
According to ISO 48-4 Standard (par. 10.2):'Instruments in regular use shall be checked at least each week against standard rubber blocks.'
Periodical verification is useful considering the importance of hardness as a testing parameter.
Gibitre test pieces
• have a shape that allows them to be manipulated and avoids transmitting the heat of the hand to the measuring zone
• are supplied with a wooden protection box that protects them from sudden changes in temperature and sunlight
• are supplied with a Calibration Report referring to the certified instrument used for the measurement.
The following configurations are available:
• Complete box containing 3 specimens with approximate hardnesses of 40 - 50 - 60 - 80 - 90 Shore A points.
• Box containing one sample with hardness of your choice among those available.
The samples are provided with Calibration Certificate with traceability to the hardness tester used for the measurements with Official Accredia Certificate issued by ISO 17025-Accredited Laboratory of Gibitre Instruments.
Specimens are individually identified by an identification label to ensure proper calibration traceability and avoid measurement errors.
The samples are provide with an insulated protection case that permits the protection of the samples from temperature variations and from the light.
