Nanoparticle analysis according to REACH

The following analyses are included in this nanoparticle analysis package, intended to characterize nanoforms according to the REACH Regulation.

Particle size distribution and aspect ratios by SEM-EDX

• Preparation with isopropanol

• Sample dispersion on a slide, with centrifugation

• SEM analysis and particle count by image analysis

• Nanoparticle detection and classification according to the 2022 EC recommendation on the definition of nanomaterial

• Reporting of PSD parameters for ~300 particles, including 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

• 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 quantification of 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 with 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

You can request a quote for the analysis through the form below. Please note that the OECD 125 guideline does not apply to this analysis.