principle of spectrophotometry

{"cid":"91192910","title":"Upgrade Atomic Absorption Spectrophotometer AAS Lab Absorption Spectrophotometry Machine","imgUrl":"https:\/\/img.chinax.com\/nimg\/52\/ab\/2a681d78de095c2298686d3e295d-200x200-1.jpg","attrs":{"Price":"USD 11030-13510\/unit","Brand Name":"BAXIT","Model Number":"BXT-AAS4HS","Minimum Order Quantity":"1","Delivery Time":"3-5working days","Place of Origin":"china","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Supply Ability":"1000units","Packaging Details":"wooden box","Classification":"Flame Graphite Integrated Machine \uff084Lamp Positions\uff09","Model":"BXT-AAS4HS","Detector":"Hamamatsu Photomultiplier Tube from Japan","wavelength range":"(185-900)nm","Wavelength indication error":"\u2264\u00b10.1nm","Wavelength repeatability":"\u2264\u00b10.025nm","Baseline drift":"0.001ABS\/30min(Static) 0.003ABS\/15min(Dynamic)","Light source system":"Rotary turret-type fully automatic switching lamp holder","Element lamp Lighting mode":"400Hz, 1\/4 duty cycle pulse is on","Monochromator":"Czerny-Turner Enhanced type","Grating line density":"1800","Spectral bandwidth":"0nm\u30010.1nm\u30010.2nm\u30010.4nm\u30011.0nm\u30012.0nm Multi-gear automatic switching","Flame atomization system":"Standard equipment","Burner":"0.5mmx100mmAll-titanium combustion head","Sprayer":"Metal sleeve high-efficiency glass spray nozzle","Atomization chamber":"Corrosion-resistant all-plastic atomization chamber","Repetition":"RSD\u22640.7%","Detection limit":"1.5pg","Safety protection":"Pressure system failure protection, cooling system failure protection, real-time power monitoring","Sample size":"1-99","Result output":"Multi-format data storage and print output","Communication interface":"RS232, USB expansion interface","Host machine size":"1000x400x470mm","Graphite Furnace Atomic Absorption System":"Standard configuration","Precision":"\u22643%","Heating temperature range":"Room temperature-3000\u2103","Heating speed":"2000 degrees per second","Temperature control accuracy":"1%","Heating conditions setting":"11 step, ramp temperature rise, stepwise temperature rise, maximum power temperature rise, temperature rise monitoring opposite-side system","Background correction (deuterium lamp)":"When using 1ABS, the value should be \u2265 60 times."}}

{"cid":"91206681","title":"Self Cleaning Oil In Water Sensor RS485 Customizable Titanium Alloy","imgUrl":"https:\/\/img.chinax.com\/nimg\/5e\/11\/e19f80d2bc9270c4efe0d175cd71-200x200-1.jpg","attrs":{"Price":"Determined by the number of specific orders","Brand Name":"Desun Uniwill","Model Number":"DS530","Minimum Order Quantity":"1","Place of Origin":"Shaanxi, China","Payment Terms":"L\/C, D\/A, D\/P, T\/T","Supply Ability":"2000 Piece\/Pieces per Month","Packaging Details":"Carton packaging","Output":"Support RS-485, MODBUS protocol","Principle":"Ultraviolet fluorescence method","Accuracy":"\u00b12%","Housing material":"316L (customizable titanium alloy)"}}

{"cid":"91198828","title":"Pr12 Rapid Pesticide Detector Pesticide Residues Assay Devices","imgUrl":"https:\/\/img.chinax.com\/nimg\/2d\/80\/00a4b0148da6b71d95efa43efb05-200x200-1.jpg","attrs":{"Brand Name":"HiYi","Model Number":"PR12","Minimum Order Quantity":"1","Delivery Time":"15 work days","Certification":"CE","Place of Origin":"China","Payment Terms":"L\/C, D\/A, D\/P, T\/T, Western Union, MoneyGram","Packaging Details":"paper case","Operating system":"Android 4.4","Light source":"LED, wavelength at 410nm","Working temperature":"10-40\u2103; Relative humidity \u2264 70%","Storage":"-20\u2103~55\u2103; Relative humidity \u2264 80%","Dimension":"306mm (L) x369mm (W) x109mm (H)","Net Weight":"2.5kg"}}

{"cid":"91178288","title":"High-precision Optical Indexing Sensor Dissolved Oxygen Meter with External Probe Design and Compact Portable Water Quality Meter","imgUrl":"https:\/\/img.chinax.com\/nimg\/31\/30\/39f6584edf0ef2d617721b9ba386-200x200-1.jpg","attrs":{"Price":"$178","Brand Name":"yieriy","Minimum Order Quantity":"50","Place of Origin":"Guangdong, China","pH Accuracy":"0.1","DO Range":"0.0-30.0mg\/L","DO Resolution":"0.1mg\/L","pH Range":"3.5-11.0","Nitrite Range":"0-1.00mg\/L","Ammonia Nitrogen Range":"0-1.00mg\/L","Temperature Range":"0.0-50.0\u00b0C","Salinity Compensation":"0-42ppt","Altitude Compensation":"0-3500m","Data Storage":"99 sets","LCD Size":"27x45mm","Cable Length":"3.5m","Power Supply":"4 AAA batteries","Item Weight":"132g","Item Size":"164x70x30mm"}}