Determination according to LVS EN 826:1996 / LVS EN ISO 844:2009
Equipment associated with this service:
Trīs ķieģeļu spiedes stiprības pārbaude
Photocolourimetric estimation (after F. Koroleff [Grasshoff, 1983]). Optical density vs. distilled water recorded at 630 nm wavelength.
Chlorophyll a extraction from phytoplankton with ethanol.
Initial reduction with cadmium (after K. Grasshoff [Grasshoff, 1983]). Optical density vs. distilled water recorded at 543 nm wavelength.
Photocolourimetric estimation (after K. Grasshoff [Grasshoff, 1983]). Optical density vs. distilled water recorded at 543 nm wavelength.
Reduction principle after Murphy and Riley [Grasshoff, 1983]. Optical density vs. reference sample recorded at 885 nm wavelength.
Photocolourimetric estimation (after F. Koroleff [Grasshoff, 1983]). Optical density vs. reference sample recorded at 810 nm wavelength.
Oxidated simulatenously with total phosphorous under pressure (after F.Koroleff [Grasshoff, 1983]). Optical density vs. distilled water recorded at 810 nm wavelength.
Oxidated simulatenously with total nitrogen under pressure (after F.Koroleff [Grasshoff, 1983]). Optical density vs. distilled water recorded at 885 nm wavelength.
