Schmidt Hammer Verification and Calibration (Original Schmidt, Silver Schmidt)
Schmidt-type concrete hardness testers (Original Schmidt, Silver Schmidt) are used for non-destructive estimation of concrete compressive strength, both for quality control and diagnostics of existing structures. The reliability of measurement results depends on a correctly set rebound value, which is why regular calibration and metrological inspection of these devices is essential.
Metrological activities for concrete hardness testers
- Calibration of Original Schmidt and Silver Schmidt concrete hardness testers.
- Metrological traceability by measuring the rebound value of the Schmidt hammer on a reference anvil.
- Verification of concrete hardness testers used as legally controlled measuring instruments in accordance with Annex No. 40 to Decree of ÚNMS SR No. 161/2019 Coll.
Schmidt hammer and rebound hammer
Concrete hardness testers are also known as Schmidt hammers, rebound hammers or sclerometers. We calibrate and verify mechanical Original Schmidt and digital Silver Schmidt instruments.
Verification of a legally controlled instrument is valid for 1 year or 2,000 impacts. For calibration, the recalibration interval is set by the customer.
TSÚS documents
You can find the detailed scope in the TSÚS information sheet:
📄 Information sheet – Concrete hardness testers (PDF)Price: 180 € excl. VAT
| Verification Calibration | Original Schmidt – type L, N and digi | 180 € |
| Calibration | Silver Schmidt – type BN, BL, PCN and PCL | 180 € |
Cleaning and adjustment are included in the price. Spare parts are charged separately if replacement is needed.
Prices exclude VAT. Turnaround within 5 working days of receiving the instrument. Prices valid from 1 January 2026.