Figure 3.

Elemental spectra illustrating the composition of exemplar particles emitted during operation of vat polymerization printers (spectra correspond to the particles shown in Figure 2): (a) representative carbon/oxygen particle observed in emissions from all printers; (b) iron-containing particle emitted by the Form 1+ printer; (c) calcium- and sulfur-containing particle emitted by the Pegasus Touch printer; (d) iron- and nickel-containing particle emitted by the Nobel 1.0A printer; (e) iron-, phosphorous- and zinc-containing particle emitted by the Titan 1 printer; and (f) aluminum- and silicon-containing particle emitted by the M-One printer.