An instrument that measures the relative concentration of chlorphyll, by sending a beam of blue light into the water and measuring the production of red light (fluorescence) by the chlorophyll contained in phytoplankton cells; chlorophyll concentration is proportional to fluorescence
equipment used to measure fluorescence
an instrument for measuring luminescence (fluorescence, phosphorescence) spectra. Contains filters for excitation and emission but no wavelength scanning. Light is collected at 90 degrees from the incident light (excitation) direction.
An instrument that provides an indication of the concentration of a given material by measuring the amount of fluorescence attributed to the material. For example, a fluorometer provides an excitation beam at a wavelength that is known to cause fluorescent emission from chlorophyll and measures light at a wavelength that matches the chlorophyll emission. As a result, the amount of chlorophyll-containing biomass can be estimated.
An instrument to detect and measure the emission of fluorescence.
A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. These parameters are used to identify the presence and the amount of specific molecules in a medium. Modern fluorometers are capable of detecting fluorescent molecule concentrations al low as 1 part per trillion.
