Published
Describes the tracers used (fluorescein, rhodamine B, acid yellow 7, sulfo rhodamine B, pyranine, and rhodamine WT), the tracer measurement (principle, field measurement and laboratory measurements), environmental factors affecting tracers, techniques for tracer injection, sampling techniques, analysis and computation.
                    PUBLISHED
                    ISO 9555-4:1992
                    90.93
                                        Standard confirmed
                    May 17, 2022
                
                ABANDON
                                    ISO/WD 23607