Crossword clues for Laboratory substances. 5 lettersAnswerClueACIDSLaboratory substances.ESTERLaboratory substance.GASESLaboratory substances.SERUMLaboratory substance.MEDIASubstances used for laboratory cultures.CHEMICALLaboratory substanceSERALaboratory substances.REAGENTLaboratory substance.ACIDLaboratory substance.AGARLaboratory substance.SUBLIMATEPurify (a substance) by laboratory process.