The KCDB - the BIPM key comparison database – supports the CIPM MRA. The KCDB contains information on the internationally recognized Calibration and Measurement Capabilities (CMCs) for services available from the participating institutes, and the key and supplementary comparisons supporting these CMCs.

All data listed in the KCDB have been reviewed and approved within the CIPM Mutual Recognition Arrangement
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Results for: VTT Technical Research Centre of Finland Ltd, Centre for Metrology / Mittatekniikan keskus

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In the CMCs uncertainty statements, the notation Q[*a*, *b*] stands for the root-sum-square of the terms between brackets: Q[*a*, *b*] = [*a*^{ 2} + *b*^{ 2}]^{1/2}

*Unless otherwise stated the expanded uncertainties given below correspond to **k* = 2 (at a 95 % level of confidence)

Finland, MIKES (VTT Technical Research Centre of Finland Ltd, Centre for Metrology/Mittatekniikan keskus)

Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
**10 °C to 85 °C**

Liquid-in-glass thermometer

Absolute expanded uncertainty
:
**7.0E-3 °C**

Comparison

Bath : graduation 0.01 °C, reading 10 mm to 25 mm above liquid surface

Approved on 03 November 2009

Items for defining ITS-90 ,
Temperature
:
**419.527 °C**

Long-stem SPRT

Absolute expanded uncertainty
:
**2.0E-3 °C**

Fixed point

Temperature-controlled furnace : 419 °C

Standard: Zinc cell

Approved on 18 May 2004

Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
**1084.62 °C**

Noble-metal thermocouple (type S or R)

Absolute expanded uncertainty
:
**0.4 °C**

Fixed point calibration

Furnace

Approved on 03 November 2009

Items for disseminating ITS-90 and PLTS 2000 ,
Temperature
:
**-80 °C to 10 °C**

Industrial Platinum Resistance Thermometer

Absolute expanded uncertainty
:
**7.0E-3 °C**

Comparison

Bath

Approved on 03 November 2009

Pressure ,
Absolute pressure
:
**1.50E4 Pa to 3.50E5 Pa**

Absolute pressure gauge

Absolute expanded uncertainty

1 + 2.5E-05*p*

*p* pressure in Pa

The uncertainty is expressed in Pa

Gas medium

Uncertainty values range from 1.4 Pa to 9.8 Pa

Approved on 11 October 2005

Pressure ,
Gauge pressure
:
**5.00E5 Pa to 5.00E7 Pa**

Pressure balance

Absolute expanded uncertainty

12 + 2.5E-05*p*

*p* pressure in Pa

The uncertainty is expressed in Pa

Oil medium

Uncertainty values range from 2.4E+01 Pa to 1.3E+03 Pa

Approved on 11 October 2005

Mass ,
Mass
:
**50 kg to 2000 kg**

Mass standard

Absolute expanded uncertainty
:
**1.0E2 mg to 3.0E3 mg**

Comparison in air

Uncertainty scales with measurand level

Approved on 11 June 2017

Torque ,
Torque
:
**4 N m to 20 N m**

Torque measuring device

Relative expanded uncertainty
:
**8.0E-4**

Mode : clockwise, anticlockwise

Approved on 11 October 2005

Pressure ,
Gauge pressure
:
**2.00E8 Pa to 5.00E8 Pa**

Pressure balance

Absolute expanded uncertainty

1.2E-04*p*

*p* pressure in Pa

The uncertainty is expressed in Pa

Oil medium

Uncertainty values range from 2.4E+04 Pa to 6.0E+04 Pa

Approved on 11 October 2005

Complex geometry ,
Screw standards
:
**3 mm to 150 mm**

Thread plug, plain, pitch diameter

Absolute expanded uncertainty
:
**2 µm**

3-wire method, length measuring machine

Approved on 21 October 2001

Institute service identifier : MIKES/43

Impedance (up to the MHz range) ,
Inductance: self inductance, intermediate values
:
**0.1 mH to 100 mH**

Fixed inductor

Relative expanded uncertainty
:
**2.0E1 µH/H to 1.0E2 µH/H**

Uncertainty table

{"row_1":{"col_1":"","col_2":"Method of measurement","col_3":"Reference standard used in calibration","col_4":"Frequency","col_5":"Relative expanded uncertainty"},"row_2":{"col_1":"100 mH","col_2":"Series resonance","col_3":"Capacitance standard","col_4":"1 kHz, 1.592 kHz","col_5":"20"},"row_3":{"col_1":"10 mH to 100 mH","col_2":"2 DVM","col_3":"Resistance standard","col_4":"50 Hz to 1000 Hz","col_5":"50"},"row_4":{"col_1":"100 µH to 10 mH","col_2":"2 DVM","col_3":"Resistance standard","col_4":"50 Hz to 2000 Hz","col_5":"20"}}

The expanded uncertainty given in this table are expressed in µH/H

2 DVM, series resonance

Frequency : 50 Hz to 2000 Hz, 1592 Hz

Approved on 11 May 2017

Institute service identifier : MIKES/93n

High voltage and current ,
High AC voltage: peak values
:
**0 % to 10 %**

linearity of peak voltage responding measuring system, AC voltmeter, AC voltaqe source

Relative expanded uncertainty
:
**0.1 %**

Linearity extension according to IEC 60060-2

Voltage range : 100 kV to 1000 kV

Frequency : 46 Hz to 60 Hz

Approved on 11 May 2017

Institute service identifier : MIKES/HV16a

AC current ,
AC current up to 100 A: sources
:
**0.025 A to 10 A**

Multifunction calibrator, AC current source

Relative expanded uncertainty
:
**2.5E1 µA/A**

Direct comparison

Frequency : 45 Hz to 65 Hz

Approved on 06 August 2013

Institute service identifier : MIKES/179a

DC resistance ,
DC resistance standards and sources: high values
:
**1.00E-3 GΩ to 1.00E5 GΩ**

Standard resistor

Relative expanded uncertainty
:
**3 µΩ/Ω to 1.5E3 µΩ/Ω**

Uncertainty table

{"row_1":{"col_1":"","col_2":"Relative expanded uncertainty","col_3":"Method of measurement"},"row_2":{"col_1":"1 MΩ to 10 MΩ","col_2":"3","col_3":"DCC bridge or Modified Wheatstone bridge"},"row_3":{"col_1":"10 MΩ to 100 MΩ","col_2":"5","col_3":"Modified Wheatstone bridge"},"row_4":{"col_1":"0.1 GΩ to 1 GΩ","col_2":"10","col_3":"Modified Wheatstone bridge"},"row_5":{"col_1":"1 GΩ to 10 GΩ","col_2":"20","col_3":"Modified Wheatstone bridge"},"row_6":{"col_1":"10 GΩ to 100 GΩ","col_2":"25","col_3":"Modified Wheatstone bridge"},"row_7":{"col_1":"0.1 TΩ to 1 TΩ","col_2":"70","col_3":"Modified Wheatstone bridge"},"row_8":{"col_1":"1 TΩ to 10 TΩ","col_2":"500","col_3":"Modified Wheatstone bridge"},"row_9":{"col_1":"10 TΩ to 100 TΩ","col_2":"1500","col_3":"Modified Wheatstone bridge"}}

The expanded uncertainty given in this table are expressed in µΩ/Ω

DCC bridge, modified Wheatstone bridge

Approved on 06 January 2015

Institute service identifier : MIKES/37n

DC current (up to 100 A) ,
DC current meters: high values
:
**10 A to 100 A**

Current clamp

Relative expanded uncertainty
:
**0.5 %**

Multiturn coil

Approved on 06 August 2013

Institute service identifier : MIKES/77

Frequency ,
Frequency
:
**1 MHz**

Local frequency standard

Relative expanded uncertainty
:
**3.0E-12 Hz/Hz**

Phase time measurement

Averaging time : 1000 s

Approved on 08 June 2007

Institute service identifier : MIKES/2

Frequency ,
Frequency
:
**5 MHz**

Local frequency standard

Relative expanded uncertainty
:
**3.0E-12 Hz/Hz**

Phase comparator

Averaging time : 1 s

Approved on 08 June 2007

Institute service identifier : MIKES/3

Frequency ,
Frequency
:
**10 Hz to 5.00E9 Hz**

General frequency source

Absolute expanded uncertainty

(1E-11)*f* + 1E-05

*f* frequency in Hz

The uncertainty is expressed in Hz

Counter

Averaging time : 100 s

Approved on 08 June 2007

Institute service identifier : MIKES/6

Linear vibration ,
Charge sensitivity (phase shift)
:
**0 ° to 360 °**

Accelerometer

Absolute expanded uncertainty
:
**1 °**

ISO 16063-21 (comparison)

Frequency : 10 Hz to 1 kHz

Approved on 18 June 2014

Institute service identifier : MIKES/V21.3.1.2.A

Sound calibrators ,
Sound pressure level
:
**94 dB (reference: 20 µPa) to 114 dB (reference: 20 µPa)**

Sound calibrator, multi-frequency

Absolute expanded uncertainty
:
**0.15 dB**

Calibrated measurement microphone

Frequency : 8 kHz to 12.5 kHz

Microphone type : LS2P

Approved on 09 November 2006

Acoustics, Ultrasound, Vibration

This metrology area covers the fields of acoustics, ultrasound and vibration.

Electricity and Magnetism

This metrology area covers the fields of DC and AC measurements, impedance, electric and magnetic fields, radiofrequencies and measurements on materials.

Length

This metrology area covers the fields of laser frequencies and dimensional metrology.

Mass and related quantities

This metrology area covers the fields of mass standards, force, pressure, density, hardness, torque, gravity and viscosity.

Chemistry and Biology

This metrology area covers all fields relevant to chemistry and biology.

Ionizing Radiation

This metrology area covers the fields of dosimetry, radioactivity and neutron measurements.