RADAR Installed System Tester (KSC)
Radioimmunosorbent Technique - or Test - Clinical chemistry
Radio-Immunosorbent Test (QSUL)
Radioisotope-tagged Sand Tracer (SAUS)
Radioisotopic Sand Tracer - Marine science (MSC)
Reduced Instruction Set Technology (AGLO)
Research Institute of Industrial Science and Technology (SAUS)
Research Institute of Science and Technology (SAUS)
Rule Induction and Statistical Testing (AAEL)