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CHLOROPHYLL METER Manufacture: KWF Sci-tech Development Co., Ltd ISO 9001: 2000 Specification: -Measurement all kinds of plant leaves -Area measurement : Ø 10mm -Measuring mode : 2-wavelength concentration difference of optical methods -Sensors : Silicon semiconductor photodiode -Measured value : liquid-crystal Display: 3-digit LCD ; measurement Frequency: 2-digit LCD -Measuring Range : 99.9 -Memory capacity : 30 Groups , automatically calculate and show the average. ON to open the power and OFF to close the power AVG ( average) button: Calculate the average of the data memory DEL ( to remove all data) button: Clear all the data memory of instrument DISP ( display) button: Display data storage memory of instrument MEAS ( measurement) button: Press MEAS key then the instruments will be measured -Power: Two units of NO.5 AA alkaline manganese batteries or carbon - zinc battery -Battery life: Each of two batteries can be maintained more than 20, 000 operations -Dimensions : ( L x W x H) : 155mm x 70mm x 42mm -Weight : 320 grams ( excluding batteries) -Precision : Less than plus or minus 1.0 SPAD -Repeat : Less than plus or minus 5.0 SPAD -Temperature of testing : 0° C to 50° C -Storage range : -22° C to 50° C -Time for testing : Less than 2s -Testing Area : Diameter less than 3mm Warranty : 12 months All Spare part
