MICRO IRHD Rubber Test Blocks according to MICRO IRHD ISO 48. The Rubber Test Blocks are only for a reference check to other samples and should be tested annually. Different MICRO IRHD ranges are available: 40, 50, 60, 70, 80, 90 The mean value, range and standard deviation are displayed on the test report. The Rubber Test Blocks are provided with a Calibration Certificate issued by Hildebrand Prüf- und Messtechnik GmbH. MACRO IRHD Rubber Test Blocks according to MACRO IRHD ISO 48. The Rubber Test Blocks are only for a reference check to other samples and should be tested annually. Different MACRO IRHD ranges are available: 30, 40, 50, 60, 70, 80, 90 The mean value, range and standard deviation are displayed on the test report. The Rubber Test Blocks are provided with a Calibration Certificate issued by Hildebrand Prüf- und Messtechnik GmbH. DELIVERY CONTENTS - Custom made carrying case - Calibration certificate issued by Hildebrand Download: Brochura MICRO IRHD Test Blocks Brochura MACRO IRHD Test Blocks