An interlaboratory study (ILS) has been designed within the DFG Priority Program 2122 “Materials for Additive Manufacturing” (SPP 2122) for testing nanoparticle-modified and virgin AlSi10Mg and PA12 powder feedstocks along the entire process chain of powder bed fusion using laser beam. The following SOPs are prepared for the central laboratories (CLs) measuring as-produced and used (after PBF-LB processing), virgin and nanoparticle-modified AlSi10Mg and PA12 powder feedstock properties, for PBF-LB participants who are processing as-received and nanoparticle-modified AlSi10Mg and PA12 build jobs, and for the CLs measuring virgin and nanoparticle-modified AlSi10Mg and PA12 as-built part properties to generate FAIR data in SPP2122 ILS.