UPI/8221

Knoop Indenters

Shaft diameter: ø6.35mm

Calibration details: This Knoop Indenter complies with the requirements of DIN EN ISO 4545-2 and ASTM E92 Class B calibrated to standards by an ISO 17025 RvA accredited laboratory, with calibers traceable to Physikalisch-Technische Bundesanstalt National Metrology Institute, (PTB) Braunschweig, Germany.
RvA, UKAS DaKKS, COFRAC are ILAC signatories.

Calibration temp.: (23 ± 2) °C

Relative humidity: < 70 %rh

Lowest test force: 1 gf

Validity: ISO 4545-2 recommends that the Knoop Diamond Indenter be directly verified after 2 years of use.

Uncertainty: The reported expanded uncertainty is based on the standard uncertainty of the measurement multiplied by a coverage factor k, such that the coverage propability corresponds to approximately 95%. The standard uncertainty is determined in accordance with EA 04/2.

Traceability: The measurements are executed using standards for which the traceability to (inter) national standards has been demonstrated towards the RvA.

Diamond surface appearance: According to the applicable standards.

Tip and edges: According to the applicable standards.

Condition of the surface: According to the applicable standards.