What's the adjective for achromatic? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs achromatize and achromatise which may be used as adjectives within certain contexts.
achromatic
(optics) Free from color; transmitting light without color-related distortion.
Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion.
(biology) Uncolored; not absorbing color from a fluid; -- said of tissue