Testing services / Nanoparticle analysis according to REACH

Nanoparticle analysis according to REACH

The following analyses are included in this measurement package. Does not include OECD 125.

Particle size distribution and aspect ratios by SEM-EDX: Preparation with isopropanol and classification in accordance with the 2022 EC recommendation relating to nanomaterials.
- Sample dispersion measurement on a slide, with centrifugation.
- SEM analysis and particle count by image analysis.
- Nanoparticle detection + reporting of PSD parameters such as the following
  - PSD diagram, accumulated and individual.
  - Ferret min (min, d10, d25, d50, d75, d90, d95, max)
  - Ferret max (min, d10, d25, d50, d75, d90, d95, max)
  - Equivalent circular diameter (min, d10, d25, d50, d75, d90, d95, max)
  - Aspect ratio (calculated based on individual ferret min and ferret max measurements)
  - Number based nano-fraction (%)
Crystal phase analysis by XRD/Rietveld method: Identification and quantification of the phases present by X-ray diffraction. The analysis includes the following steps:
- Sample preparation: drying, grinding, X-ray preparation
- XRD analysis over an angular range extending from 10° to 90°
- Identification of the crystalline phases present in the sample
- Semi-quantitative analysis of phase distribution, using the Rietveld method
- Interpretation of diffractograms
Chemical composition/purity by ICP-AES and CHNS analysis
- ICP-AES is used to quantify inorganic and metallic elements: Ag, Al, As, B, Ba, Be, Bi, Ca, Cd, Co, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, S, Se, Sb, Si, Sn, Sr, V, Zn, Ti, and Tl.
- Determination of C, H, N, and S is performed using an elemental analyzer.
Volume-specific surface area (VSSA) and VSSA diameter calculations (optional)
- BET specific surface area measurement of powder by nitrogen adsorption.
- True (skeletal) density measurement by He pycnometry, excluding intergranular and intragranular porosity.
- Both analyses include sample preparation.