This work reports the production and characterization of lithium-loaded liquid scintillator (LiLS) for the Precision Reactor Oscillation and Spectrum Experiment (PROSPECT). Fifty-nine 90 liter batches of LiLS ({}^6{\rm Li} mass fraction 0.082%\pm0.001%) were produced and samples from all batches were characterized by measuring their optical absorbance relative to air, light... Show more