Conceptid (2) | Preflabel |
---|---|
CBIDS001 | Concentration of biogenic silica {BSi opal} per unit volume of the water body [particulate >0.6um phase] by filtration, alkali hydrolysis and spectrophotometry |
OPALWCP0 | Concentration of biogenic silica {BSi opal} per unit volume of the water body [particulate >0.6um phase] by filtration, alkali hydrolysis and colorimetric analysis |