retender of supply of essential machinery for establishment of plant leaf and tissue analysis laboratory-kjedhal block digester along with cooling station and fume scrubber and distillation unit :- this instrument consist of 3 part = ( a ) kjeldahl block digester with cooling station + ( b ) fume scrubber and ( c ) automatic kjeldahl distillation unit , and the specification of this 3 parts are mentioned as follows :- ( a ) kjeldahl block digester with cooling station :- • fast , safe and complete digestion of samples through aluminiumblocks•intricatelycontroldigestiontemperature curves for unsupervised digestion. • monitor process parameters & pre-set samples cycles. • autolift enables complete automation and safety. • cooling stations increase throughput by decreasing the cooling time past digestion. •number of positions : 250 ml x 12 nos • tube capacity ( ml ) : 250 ml •temperature range : ambient to 470°c • timer range : 1 to 300 minutes • temperature precision : + or - 1°c • ramp and hold : upto 4 •presets : upto 50 • auto scrubber on / off : yes •pid control : yes • autolift : yes • auto off after achieving set time : yes • temperature calibration : yes , single and two point • pc & printer connectivity : yes upgradable • display : graphical lcd • body : stainless steel with control paneloffrp•currentconsumption:8a•dimension: 416x554x595mm • power consumption : 1600w • cooling station : increase sample throughput by saving time on sample cooling • save time on complete kjeldhal process as cooling station offers rapidsample cooking. ( b ) fume scrubber:-• transparentpc protective front shield and easy removable bottle tray. • carbon adsorption bottle removal any trace acid from exhaust air. • fume scrubber with 28lpm capacity for complete evacuation of acid fumes. • ptfe air baffle for acid neutralisation• 2 litre condensation and neutralisation jars for larger fume volumes. • polypropylene head / nozzle, valve in teflon & diaphragm in tefloncoatedneoprenerubber•threadedtubeconnectorsfor quick removal of glass components for maintenance • fume condenser attachment for pre condensation of excess acid, hence saving neutralisation chemicals. • current consumption ( a ) :1a • capacity :28ltr / min•dimension ( wxdxh ) inmm : 365x375x480mm ( c ) automatic kjeldahl distillation unit : • simple programming and stright forward operation • quick start option with favourite method menu • start and stop cooling water automaticallly during the distillation process with excellent insulationofinternalparts•robustacidresistanthousing• compact footprint saves useful laboratory bench space • brilliant supervision of all crucial functions • comprehensive built in safety systems for operator protection •sample analysis reuires no monitoring • the inbuilt n / protein calculator with extraction of results makes the system versatile like never before • automatic dilution , steam , alkali , acid and test tube drain • anti corrosive frp body construction • 7 colored touch screen display • steam regulation ( 10 to 100% ) • process kill switch to hall the process in caseofaccidential•processresumefromstop•detachable bottom drip tray for extra protection against acid attack • anytime alkali addition during the distillation cycle • tube sensor that enablessafeoperatingconditionsineventoftubedamage• reagent refill level sensor to avert reagent dry out • one pointcalibrationofalkalianddistilledwaterpumps•twopoint calibrationforacidpumps•realtimemonitoringofprocess parameters • selv protection • nitrogen reproducibility : + or -1% • rsd < 1% • lod of 1 to 200 mg with greater then or equalto0.1mgof nitrogen •nitrogen recovery greater then 99.5% •tube capacity ( ml ) : 250 ml , minimum distillation time ( mins ) : 5 , current consumption ( a ) : 10 , power consumption ( w ) : 1500, dimension : lenght 480 mm x breadth 470 mm x 820 mm