Spectral transmittance and reflectance with UV-Vis-NIR (solid samples)

Diesel exhaust fluid (DEF) is an additive used in diesel-powered vehicles to help the catalytic reduction of nitrous oxides. Thus, the use of AdBlue and other exhaustive fluids improves ambient air quality. DEF testing package according to ISO 22241:2019 includes the measurements listed below: Urea content (ISO 22241-2C), Density at 20 °C (EN ISO 12185) , Refractive index at 20 °C (ISO 22241-2C), Alkalinity as NH₃ (ISO 22241-2D), Biuret (ISO 22241-2E), Aldehydes (ISO 22241-2F), Insoluble matter (ISO 22241-2G), Phosphate (ISO 22241-2H), Determination of Al, Ca, Cr, Cu, Fe, K, Mg, Na, Ni, and Zn content (ISO 22241-2I).

This test is used to evaluate the color fastness of dyed or printed paper or board that is intended to come into contact with food. The applied simulants are Olive oil, 3% acetic acid, Alkaline salt solution (saliva simulant), Distilled water. Color transfer is assessed against a greyscale according to standard EN 646.

X-Ray Reflectometry (XRR) analysis is used to measure the density (g/cm3), thickness (nm), and roughness (nm) of thin films. The method is applicable to the characterization of single- or multilayered thin films, as it provides information on the thickness and density of individual layers of the sample material as well as the roughness of the interphases. Greatest accuracy for XRR thickness measurements is generally achieved for samples containing 1-150 nm thick surface layers with under 5 nm RMS roughness. Thicker films and coatings with rougher surfaces can also be characterized, but the accuracy of thickness determination decreases as the thickness and roughness of the film or film stack increase. >150 mm wafers are typically cut to fit the sample holder. Please let us know if you need testing for larger wafers that cannot be cut into pieces. The available temperature range for XRR measurements is 25-1100 °C, and crystallinity can be studied as a function of temperature. The measurements can be performed under a normal atmosphere, inert gas, or vacuum. Measurements are typically performed using one of the following instruments: Rigaku SmartLab, Panalytical X'Pert Pro MRD, Bruker D8 Discover. Please let us know if you have a preference for a specific instrument.

A dilatometer is used to determine the linear thermal expansion of a material as a function of temperature. The temperature range of the measurement is generally between 25 °C and 1,600 °C. There is also an option to perform the test in a cryogenic atmosphere, which ranges from -175 °C to 300 °C. The typical heating rate is 3 °C/min. As a result of the measurement, you will get the coefficient of thermal expansion (CTE) and the absolute change in sample length, both as a function of temperature. The testing can be performed in various atmospheres, including air, argon, CO₂, N₂, and O₂. Please contact us to get a quote. The price will depend on the testing conditions, so please specify them as precisely as possible.

The peroxide value (PV) measures hydroperoxides formed as a result of the autoxidation of unsaturated fatty acids in food and feed products. Accumulation of autoxidation products affects sensory quality and is potentially harmful to human and animal health, making PV an important quality indicator in the food industry. Autoxidation reactions occur at different rates during the manufacturing, storage, and use of food and feed, but are generally sped up with elevated temperatures and exposure to light. This method includes an extraction step, after which the determination of peroxide value is performed on the extracted fat or oil. The method is suitable for all food and feed products that contain fat.

This test is designed to measure the oxygen transmission rate of finished packages, including cups, bottles, trays, and containers. Two replica measurements are included in the displayed price. Temperature can be adjusted from 15 to 55 °C, and relative humidity can be either 0% or between 5 and 90% RH. This test is not suitable for films. Please see the oxygen transmission rate (OTR) of films and sheeting if you need testing for film samples. Please specify the sample dimensions and testing conditions upon ordering.

The peroxide value (PV) measures the amount of oxygen chemically bound to oil or fat as peroxides, particularly hydroperoxides, as a result of autoxidation reactions. It is an important quality parameter in food and feed production, as a high peroxide value is linked to several detrimental effects: Change in chemical and physical properties (such as smoking point and viscosity), Compromised sensory quality (rancid odor and flavor), Potential harm to human and animal health. Autoxidation reactions may occur during the manufacturing, processing, storage, and use of fats and oils. Risk factors include elevated temperatures and exposure to light, making products like deep-frying oil particularly susceptible to elevated peroxide levels. This peroxide value analysis is suitable for animal and vegetable fats and oils, fatty acids, and their mixtures. The method is not suitable for milk fats and lecithin.

Standard EN 228 outlines the testing requirements and methods for gasoline quality testing. The following tests are included in the package: Standard Parameter Requirements EN ISO 5164 RON Min. 95 EN ISO 5163 MON Min. 85 EN 237 Lead content Max. 5 mg/l EN ISO 12185 Density at 15 °C 720–775 kg/m3 EN ISO 20846 Sulfur content Max. 10 mg/kg EN 16136 Manganese content Max. 2 mg/l EN ISO 7536 Oxidation stability Min. 360 minutes EN ISO 6246 Washed gum content Max. 5 mg/100ml EN ISO 2160 Copper corrosion Class 1 ASTM D4176 Appearance Bright and clear EN ISO 22854 Hydrocarbon composition Benzene max. 1 v%, aromatics max. 35 v%, olefins max. 18 v%, oxygenates* EN 13016-1 Vapor pressure at 37.8 °C (DVPE) Depends on volatility class** EN ISO 3405 Distillation characteristics Final boiling point max. 210 °C, distillation residue max. 2 v%, evaporated volumes*** * For gasoline with max. 3.7 m% of oxygen, allowed oxygenate contents are methanol 3 v%, ethanol 10 v%, iso-propanol 12 v%, iso-butanol 15 v%, tert-butanol 15 v%, ethers with five or more carbon atoms 22 v%, and other oxygenates 15 v%. For gasoline with max. 2.7 m% of oxygen, allowed oxygenate contents are methanol 3 v% and ethanol 5 v%. ** For volatility class A: 45–60 kPa, B: 45–70 kPa, C: 50–80 kPa, D: 60–90 kPa, E: 65–95 kPa, and F: 70–100 kPa *** Percentage evaporated at 70 °C (E70): winter 22–50 v%, summer 22–48 v%, at 100 °C (E100): 46–71 v%, and at 150 °C (E150): min. 75 v%

The molar mass distribution of biomass samples soluble in pure water or organic solvents (DMF, DMSO, and THF) is measured with size exclusion chromatography (SEC) with a refractive index detector (SEC-RID). The system is calibrated with polystyrene and dextran standards. A Pullulan standard is also available upon request. In the case of lignin samples, molar mass distribution is analyzed using SEC coupled with a Ultraviolet detector at 256 nm wavelength. The lignin is dissolved in a suitable solvent before analysis. The SEC system is calibrated with a polystyrene sulfonate standard. A borate buffer is used to set the pH for the eluent. The weight-average molecular weight and number-average molecular weight are reported.

Determination of powder flowability index (Carr index) according to the ASTM D6393 standard for bulk solids characterization. The analysis is performed with the Hosokawa Powder Tester and includes the measurement and calculation of the following parameters: Angle of repose, Aerated bulk density, Packed bulk density, Compressibility, Angle of spatula, Cohesiveness/Uniformity. The Carr Index of Flowability is calculated based on these parameters and expressed as a number between 0 and 100, with higher numbers indicating better flowability. The results from the individual tests will also be reported. Test conditions, including temperature and relative humidity, can be tailored to match the sample material's typical processing environment. Contact us for more information and to request a quote.