NEX QC+ QuantEZ EDXRF for teaching and basic research AppNote XRF1654: NEX QC+ QuantEZ EDXRF for teaching and basic research
Analysis of heavy metals in aerosols on air filters AppNote XRF1061: analysis of heavy metals in aerosols on air filters
Trace elements in aqueous solution with UltraCarry AppNote XRF1011: sub-ppm metals in aqueous solutions with UltraCarry