Apogee DLI-500 PAR Meter

Apogee's new DLI-500 meter is designed to measure photosynthetically active radiation (PAR) 400–700 nm and is accurate under all light sources. If you are looking for a low-cost option that is accurate under sunlight and some broadband light sources see our DLI-400 model. In addition to measuring PAR, the DLI-500 meter calculates daily light integral (DLI) and photoperiod. DLI refers to the total amount of PAR or extended PAR (ePAR) incident on a plane in ..

£649.95