Measurements and Analyses

Analyses and measurements belonging to accreditation scope

Stability testing of nitrocellulose based propellants using stabilizer depletion

price according to agreement

Nitrocellulose is the main component of many propellants. Nitrocellulose decomposes spontaneously during longtime preserving. Stabilizers are added to propellants in order to avoid decomposition. Stabilizers decompose in time as well and their effectivity reduces. The purpose of the current analysis is to study whether the amount of stabilizers in the propellants are sufficient for safe preserving. The method is based on NATO standard "Explosives, nitrocellulose-based propellants, stability test procedures and requirements using stabilizer depletion. AOP-48“.

Analyses and measurements outside accresitation scope

 

We carry out different (often nonstandard) measurements and analyses that have not been accredited. In the case of interest you are asked to contact Koit Herodes or ivo Leito (contact data on our contact page) who will inform you about our capability to perform different analyses and measurements.

Several examples of measurements and analyses we are capable to carry out are presented below.

  • Characterization of chemicals, materials and coatings using instrumental analysis methods

Characterization with instrumental analysis methods is necessary in product development, monitoring of production, notification of new chemicals, etc. We use the following techniques for characterization: Infrared spectroscopy (FT-IR), UV-Vis spectrophotometry, Nuclear magnetic resonance spectroscopy (FT-NMR, both 1H and 13C spectra) and Gas chromatography mass spectrometry (GC-MS). These techniques are mutually complementary and used all together give very good picture of the sample. As a result of characterization we issue certificate containing the spectra and chromatograms, together with interpretations. We can issue the certificate either in Estonian or in English language.

Many variations are possible according to your needs. In the case of interest in this service you are welcome to contact Koit Herodes or Ivo Leito (contact data on our contact page), to  discuss the problem at hand and our possibilities to solve it. If necessary we will prepare quotation before the work.


Analysis of polymers, paints, coatings, chemicals etc materials using infrared (FT-IR) spectroscopy

Infrared spectroscopy allows to analyse the composition of a wide range of materials (polymers, coatings, paints, works of art, building materials, oils, etc). It is possible to determine the main constituents and the main impurities. In favourable cases the analysis can be quantitative. The amount of information obtained is strongly dependent on the material that is analysed and also on available reference materials.

In the case of interest, you are welcome to contact Koit Herodes or Ivo Leito (contact details can be found on our contact page), to discuss your specific analysis application and to estimate the amount of work required. Written quotation can be issued if wished. 

  • Spectrophotometric analysis

It is possible to measure the content of iron in water and alloys.

  • Gas chromatographic and chromato-mass-spectrometric analysis
price according to agreement

Chromatographic methods are especially suited for analysis of individual compounds (especially volatile ones) in complex objects. In principle very wide range of objects are accessible to analysis (food, drugs, fuels, technological materials, etc). We mostly perform non-standard analyses and investigations that are not performed by routine analysis laboratories.

In the case of interest, you are welcome to contact Koit Herodes or Ivo Leito (contact details can be found on our contact page), to discuss your specific analysis application and to estimate the amount of work required. Written quotation can be issued if wished. 

  • Pesticide residues determination in fruits and vegetables by LC-MS method

price according to agreement

This method enables to determine the following pesticide residues: carbendazim, thiabendazole, imazalil, oxydemetton-methyl, aldicarb, aldicarb sulphone, aldicarb sulphoxide, methomyl, thiodicarb, phorate sulphone, phorate sulphoxide, methiocarb, methiocarb sulphone, methiocarb sulphoxide.

  • Potentiometry

Adjustment-calibration of pH meter and measurement of pH

price according to agreement

Content of F- and NO3- ions in water

price according to agreement

In addition to fluoride and nitrate ions we are also able to determine other ions. For more detailed information please contact Koit Herodes or Viljar Pihl (contact data on our contact page). 

  • Comparison of the readings of capacitive hygrometers with readings of an air humidity measuring instrument

Such a comparison is not as metrologically strict as a calibration but it affords to make comparison measurements outside the climatic chamber differently from our calibration method. For more detailed information please contact Martin Vilbaste (contact data on our contact page). 

  • Determination of traces of water by coulometric Karl Fischer titration

Coulometric Karl Fischer titration is the standard method for analysis of traces of water down to ca 0.001%. It can be used for a wide variety of materials and samples. At our site it is possible to carry out sample manipulations in inert gas glovebox, thereby eliminating contamination of the sample with traces of water.