MUkit - Measurement Uncertainty Kit


About the program

MUkit (Measurement Uncertainty Kit) is a measurement uncertainty software application, where calculations are based on the Nordtest TR537 handbook. By introducing the MUkit software, Envical Syke presents for chemical laboratories a user-friendly tool, which can be utilized for measurement uncertainty estimations often appearing to be a laborious task to perform. The traceability and comparability of analytical results require knowledge of the measurement uncertainty associated with a result. A uniform procedure for the estimation of measurement uncertainty is expected to improve the comparability of analysis results between laboratories.

The software allows laboratories to easily evaluate the measurement uncertainties utilizing:

  • Results of control samples
  • Results of routine sample replicates
  • Results of inter-laboratory comparison tests
  • Results of the recovery tests

MUkit measurement uncertainty software version 3.0 is available for download free of charge from the link below. Version 3.0 is based on calculations presented in Nordtest TR537 edition 4.

System requirements

MUkit requires to be installed on a computer with Microsoft Windows, which can run the Microsoft .NET Framework 4.0 Client Profile.

Unfortunately, the 1.0 version of the software works properly only with the Windows default DPI size for fonts (96 DPI). If the user is using another DPI, the user can test the program, but it is absolutely not guaranteed that the user can see everything and therefore make calculations with it.

End User License Agreement


This End-User License Agreement (the “Agreement”) is a legal agreement between you (either an individual or a single entity) and Suomen Ympäristökeskus (Syke) for evaluation and use of the MUkit software (including all ancillary applications provided) and any associated documentation provided with the MUkit software (collectively, the “Software”). By downloading, installing, or using the Software: (1) you represent that you understand the terms of this Agreement and you have the capacity and authority to bind your employer to this Agreement, and (2) you accept the terms of this Agreement and you consent to be bound by this Agreement on behalf of your employer (hereinafter referred to as “you”). If you do not agree to be bound by these terms and conditions, do not download, install, or use of the Software


When used in this Agreement, the following terms shall have the respective meanings indicated, such meanings to be applicable to both the singular and plural forms of the terms defined:

“Licensor” means Suomen Ympäristökeskus (Syke).

“Licensee” means You or Your Company, unless otherwise indicated.

“Software” means (a) all of the contents of the files, disk(s), CD-ROM(s) or other media with which this Agreement is provided, including but not limited to ((i) registration information, i.e. License key which is unique for a registration name of the Licensee; (ii) related explanatory written materials or files (“Documentation”); and (iii) Software setup files and code samples (if any); and (b) upgrades, modified versions, updates, additions, and copies of the Software, if any, licensed to you by Syke (collectively, “Updates”).

“Use” or “Using” means to access, install, download, copy or otherwise benefit from using the functionality of the Software in accordance with the Documentation.

“System” means Windows OS, GNU/Linux or Mac OS X, or any virtual machine.


You are granted a non-exclusive License to Use the downloaded Software for any purposes for an unlimited period of time.

The software product under this License is provided free of charge. Even though a license fee is not paid for the use of such software, it does not mean that there are no conditions for using such software.

2.1. The Software may be installed and Used by the Licensee for any legal purpose.

2.2. The Software may be installed and Used by the Licensee on any number of systems.

2.3. The Software can be copied and distributed under the condition that original copyright notice and disclaimer of warranty will stay intact and the Licensee will not charge money or fees for the Software product, except to cover distribution costs.

2.4. The Licensee will not have any proprietary rights in and to the Software. The Licensee acknowledges and agrees that the Licensor retains all copyrights and other proprietary rights in and to the Software.

2.5 Use within the scope of this License is free of charge and no royalty or licensing fees shall be paid by the Licensee.


3.1 This License does not transmit any intellectual rights on the Software. The Software and any copies that the Licensee is authorized by the Licensor to make are the intellectual property of and are owned by the Licensor.

3.2 The Software is protected by copyright, including without limitation by Copyright Law and international treaty provisions.

3.3 Any copies that the Licensee is permitted to make pursuant to this Agreement must contain the same copyright and other proprietary notices that appear on or in the Software.

3.4 The structure, organization and code of the Software are the valuable trade secrets and confidential information of the Licensor. The Licensee agrees not to decompile, disassemble or otherwise attempt to discover the source code of the Software.

3.5 Any attempts to reverse-engineer, copy, clone, modify or alter in any way the installer program without the Licensor’s specific approval are strictly prohibited. The Licensee is not authorized to use any plug-in or enhancement that permits to save modifications to a file with software licensed and distributed by the Licensor.

3.6 Trademarks shall be used in accordance with accepted trademark practice, including identification of trademarks owners’ names. Trademarks can only be used to identify printed output produced by the Software and such use of any trademark does not give the Licensee any rights of ownership in that trademark.

3.7 The software may include third party components with separate legal notices or goverened by other agreements.


4.1 The Licensor warrants that to the best of the Licensor’s knowledge, the Software does not infringe upon or violate any intellectual property right of any third party;

4.2 Software is being delivered to the Licensee “AS IS” and the Licensor makes no warranty as to its use or performance.

The Licensor does not and cannot warrant the performance or results the Licensee may obtain by using the Software. The entire risk arising out of use or performance of the Software remains with the Licensee.

The Licensor gives no warranty, express or implied, that (i) the Software will be of satisfactory quality, suitable for any particular purpose or for any particular use under specified conditions, notwithstanding that such purpose, use, or conditions may be known to the Licensor; or (ii) that the Software will operate error free or without interruption or that any errors will be corrected.


In no event will the Licensor be liable for any damages, claims or costs whatsoever or any consequential, indirect, incidental damages, or any lost profits or lost savings, even if the Licensor has been advised of the possibility of such loss, damages, claims or costs or for any claim by any third party.

In no event will the Licensee be liable to the Licensor on condition that the Licensee complies with all terms and conditions stated in this License.


If a portion of this agreement is held unenforceable, the remainder shall be valid. It means that if one section of the Agreement is not lawful, the rest of the Agreement is still in force. A party’s failure to exercise any right under this Agreement will not constitute a waiver of (a) any other terms or conditions of this Agreement, or (b) a right at any time thereafter to require exact and strict compliance with the terms of this Agreement.


When you access and use the software, you are presumed to be aware of and to have accepted all the rights and obligations of the present license.


This Agreement shall be governed by and construed in accordance with the laws of the Finland, excluding its conflicts of law rules.

Any dispute between Licensee and You shall exclusively be submitted to the competent court in The Helsinki Finland.


MUkit file list.

MUkit versions 1.0 and 1.9.5 as well as all other older versions are obsolete and will not be updated (e.g. in terms of security) e.g. therefore they should not be used. These versions are based on earlier editions of Nordtest TR537 and do not follow the latest guidelines for calculation of measurement uncertainty. These versions are available with source code and they licensed under BSD license. For version 1.0 only relative uncertainty estimation is possible and this version is available in Finnish, English and Russian languages.


This software application (MUkit) has been implemented with small resources. Therefore, the application is not ready or flawless but under continuous development. Because of this, the software can have usage paths that are untested, and the accuracy of the application should always be considered on case by case basis. The authors and publishers are not responsible for the flaws or user's misinterpretations of the input or output of the application. When you notice flaws in the application, please send us feedback.

The latest version of the MUkit application can be downloaded from the internet address:

Authors & Acknowledgements

Teemu Näykki - Specification and design

Atte Virtanen - Specification, design and programming
Innovatics Oy - Programming

Olivia Gruzdova and Olga Kovru - Russian translation
Erika Varkonyi - Logo

Producing this software version 1.0 and the work around it received funding from the Strategic Centre for Science, Technology and Innovation of the Finnish energy and environment cluster's (Cleen Ltd) programme for Measurement, Monitoring, and Environmental Efficiency Assessment (MMEA), which in turn received funding from the Finnish Funding Agency for Technology and Innovation (TEKES). The development of version1.0 was also partially supported by Joint graduate school “Functional materials and technologies” of Tartu University and Tallinn Technical University receiving funding from the European Social Fund under project 1.2.0401.09-0079 in Estonia. The authors also acknowledge Maa- ja vesitekniikan tuki ry for financial support. The Russian translation work has been made as part of the Water Quality Monitoring in the Kyrgyz Republic –project, which is a collaboration between the State Agency of Environmental Protection and Forestry of the Kyrgyz Republic (SAEPF) and the Finnish Environment Institute (Syke), supported by the Ministry for Foreign Affairs of Finland under the program of Wider Europe Initiative.

Personnel of Syke Laboratory (Mirja Leivuori, Markku Ilmakunnas, Timo Vänni, Mika Sarkkinen, and Marketta Turunen), Information Centre (Esa Hirvonen and Sami Korhonen) and Graphic Services (Erika Varkonyi and Satu Turtiainen) are acknowledged for their invaluable contribution during the development of the software. The pilot laboratories (Trollboken AB, Bertil Magnusson; RISE Research Institutes of Sweden, Eskil Sahlin; Nablabs laboratories, Mervi Tabell; University of Helsinki, Department of Environmental Sciences, Jukka Pellinen; UPM, Pietarsaari, Tomi Heikkinen, Stora Enso Oyj Research Centre, Jouni Kumpulainen; Environmental Laboratory of Haapavesi, Tuula Savolainen; and Labtium Ltd, Juha Virtasalo), are also acknowledged for their important contribution for testing the software.

Published 2021-04-12 at 13:08, updated 2023-11-08 at 10:21
Target group: