title: A simple, inexpensive spectrophotometer accessory for use in microanalytical studies.
mesh_terms: D005069:Evaluation Studies as Topic; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008832:Microchemistry; D009596:Nitrophenols / Q000032:analysis; D013053:Spectrophotometry / Q000295:instrumentation*; D013056:Spectrophotometry, Ultraviolet / Q000295:instrumentation
chemical_list: D009596:Nitrophenols