The classic method for developing latent prints on paper and other porous objects. Now in an easy re-usable form. No more weighing and measuring. Each vial contains a pre-measured amount of Ninhydrin that will give a 0.5% working solution when added to 1 liter of solvent. Catalog #115.
Also available as ready-to-use pre-mixed Liter - Catalog #226 or crystals (4 gram sizes to choose from).