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"SDN:S04::S0480" .
"" .
"PML/Chelsea Instruments 2-pi PAR upwelling light meter"@en .
"accepted"@en .
"A specific type of instrument with a hemispherical collector that measures electromagnetic visible radiation (400-700 nm) travelling in all directions over 180 degrees. Instrument mounted facing downwards to measure light travelling upwards."@en .
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