Table 4.

Commercially available certified reference (nano)materials.

Name	Provider	Description	Certification
ERM-FD100	JRC	Colloidal silica in water (20 nm nominal)	Equivalent spherical diameter
ERM-FD101b	JRC	Colloidal silica (80 nm nominal)	Equivalent diameter
ERM-FD102	JRC	Colloidal silica (bimodal)	Equivalent diameter
ERM-FD103	JRC	Suspension of TiO2 nanorods	Minimum and maximum Feret diameter, maximum inscribed circle diameter, area-equivalent diameter, aspect ratio
ERM-FD304	JRC	Colloidal silica (40 nm nominal)	Equivalent spherical diameter
ERM-FD305/SRM 1992	JRC & NIST	Silica	electrophoretic mobility, zeta potential
ERM-FD306/SRM 1993	JRC & NIST	Silica	electrophoretic mobility, zeta potential
SRM 1898	NIST	Titanium Dioxide Nanomaterial	BET Specific Surface Area
SRM 1979	NIST	SRM 1979 - Powder Diffraction Line Profile Standard for Crystallite Size Analysis (Nano-Crystalline ZnO Powder)	Powder Diffraction Line Profile Standard for Crystallite Size Analysis
SRM 2483	NIST	Single-Wall Carbon Nanotubes (Raw Soot)	Mass fraction values
SRM 2484	NIST	Multiwall Carbon Nanotubes (Raw Soot)	Mass fraction values
SRM 1963a	NIST	Polystyrene Spheres (Nominal Diameter 100 nm)	Modal Sphere Diameter
SRM 1964	NIST	Polystyrene Spheres (Nominal Diameter 60 nm)	Modal Sphere Diameter
RM 8011, 8012, 8013	NIST	Gold (Nominal Diameter 10, 30, 60 nm)	NIST in-house validated
BAM P-109	BAMa	Activated nanoporous carbon	BET specific surface area
BAM P-116	BAMa	Titanium Dioxide (Anatase)	BET specific surface area

Note: CRMs available as of September 30, 2020. The following reference materials are also available from NIST without certificate: RM 8011 - Gold Nanoparticles (Nominal 10 nm Diameter), RM 8017 - Polyvinylpyrrolidone Coated Silver Nanoparticles (Nominal Diameter 75 nm); RM 8281 - Single-Wall Carbon Nanotubes (Dispersed, Three Length-Resolved Populations).

^aBAM: German Federal Institute for Materials Research and Testing.