Precision
Test equipment
Concentration (chemical)
Water testing
Microbiological analysis
Organism-activity determination
Interferences (chemical)
Bacteria
Culture techniques
Sampling methods
Colour
Suspensions (chemical)
Bioassay
Water pollution
Dilution
Biological analysis and testing
Optical measurement
Wastes
Luminescence
Specimen preparation
Light emission
Surface water
Quality
Testing conditions
Water
Mathematical calculations
Ground water