I.Feature:  Professional,high quality UV meter  Ultra-violet irradiation measurement for UVA&UVB  UV detector spectrum from 290nm to 390nm  Hi,Lo measurement range 19990 and 1999 uW/cm^2  Exclusive UV sensor structure  Sensor with consine correction filter  Build zero button  Microprocessor circuit provides high reliability and durability  Seperate UV light probe allows user to measure the UV light at an optimum position  LCD display,easy readout  Heavy duty&compact housing case II.Specifications:  Dispaly: LCD(size: 18 x 45mm),Max indication 1999  Measurement ranges&resolution: 2 ranges: Hi&Lo range                                                                 Lo range: 1999 uW/cm^2 x 1uW/cm^2                                                                 Hi range: 19990 uW/cm^2 x 10uW/cm^2                                                                 *1000 uW/cm^2 =1 mW/cm^2  UV sensor spectrum: Band pass 290nm to 390nm  Accuracy:              +/-(4%FS+2dgt)  FS: full scale              *Calibration is excuted under the UVA light and compare with standard UVA light meter              *Spec.tested under the environment RF Fiedlt Strength less tand 3V/m& frequency less than 30MHz only  Sensor structure: The exluxive UV photo sensor with cosine correction filter  Sample time: Aporox.1sec  Sensor structure: Microprocess circuit  Over range indication: Indication of "- - - -"  Weight: 251g/0.55LB  Operating Temp/Humidity: 0~50C degree,less than 85%R.H.  Power supply: DC 9V batter,006P,MN 1604(PP3) or equivalent  Power consumption: Approx. DC6mA  Size: Main instrument 1131 x 70 x 25mm            Sensor probe head 45mm dia x 32mm            Sensor probe handle 125 x 24mm dia  Accessories included: Instruction manual,UV sensor probe III.Applications: Laboratory  Weathering "degradation studies"  UV sterilization  Virology  Microbial genetics  DNA research,Biologic hoods  General laboratory use  Monitoring blue light radiation hazards in welding  UV sterilization  Graphic arts  Photochemical matching  UV ERPOM erasure  Photoresist exposure  Curing of inks,adhesives and coatings