| In general the frequency of calibration runs depends on the stability of the ninhydrin reagent and the analytical system. |
| Total free amino acids in the leaf extracts and in the phloem exudate were analysed with the ninhydrin reagent. |
| Another common method involves ninhydrin, which works like invisible ink: when you douse paper with it, the chemical brings out any sweat that may have been left by fingertips. |
| Fixed-dose combination products containing also ethambutol would require staining with ninhydrin solution as this drug cannot be detected with UV light of any wavelenght whatsoever. |
| The photochemistry of ninhydrin in benzene and water was studied by laser flash photolysis and electron paramagnetic resonance. |
| In the form of an acid hydrolyzate, also positive in the Elson-Morgan's reaction and ninhydrin reaction. |
