Abstract: Methods and apparatus are described for reticle particle calibration standards. A method includes making a reticle particle calibration standard including depositing a solution that includes a plurality of particles onto a first plate; drying the solution to evaporate a solvent; bonding the plurality of particles to the first plate; coupling a second plate to the first plate, the plurality of particles located between the first plate and the second plate, wherein the plurality of particles include a plurality of traceable standard particles of substantially known shape and size.