Viewing services matching the following properties:
Winkler titration (Grasshoff, 1983)
Samples are collected in marine or freshwater and parameters are following - chorophyll a concentration, phytoplankton, zooplankton, phytobenthos, macrozoobenthos.
Samples are collected in marine or freshwater to estimate concentrations of phosphates, total phosphorus,nitrates, nitrites, ammonium, total nitrogen, silicates.
Samples are collected in marine or freshwater for temperature, salinity, pH, dissolved oxygen concentration, turbidity.
Sample fixation in 4% formaldehyde solution or by freezing. Petri dishes for sorting and species identification, stereo magnifying glass is used for counting and identification; wet weight and dry weight are determined.
Sample fixation in 4% formaldehyde solution or by freezing. Petri dishes for sorting, stereo magnifying glass is used for counting and identification; wet weight and dry weight are determined.
Sample fixation with acid Lugol solution, plankton chambers and inverted microscope is used. Counting according to Uthermohl (1958). Species composition and abundance are estimated, cell volume (=biomass) is calculated.
Sample fixation in 4% formaldehyde solution. Bogorov plankton chamber, stereomiscroscope is used, species composition and abundance are estimated, biomass is calculated.