press nit no.43, item no.01 (2022-23)cwa (w and s)-i procurement of kjeldahl apparatus for cwa(w and s)-i division , description –specification( hi-media , glassco , borosil ) material of construction- ms with powder coated ?nish, operations- digestion, distillation and scrubbing in one integrated unit, cooling system & automatic-through water coil condenser in higher models, no of samples-6 nos, tubedimension- 42x300mm, tubecapacity- 250ml(borosilicateglass3.3), process controller- 4.3”tfttouch screen controller, mode of operation- auto and manual, digestion heating block- extruded aluminum block he 30 grade 6063 for 6 samples, digestion heater- casted aluminum alloy heater is 4159, digestion heater wattage- 1500w, digestion temperature controller- pid controller, digestion temperature range- 50 degree to 450 degree,digestion temperature accuracy - +/-1%,digestion temperature sensor- chromal k type thermo couple upto1200°c, digestion program- 5 program and 5 steps,digestion program parameter- temperature and time, digestion block insulation - ceramic wool,digestion acid fumes removal - te?onadapt or fuse to manifold using & outlet connected to the glass suction pump, handle – polyamide,two tier console - to place insert rack and manifold rack, digestion tube insert rack - stainless steel-ss304, digestion manifold rack - stainless steel-ss304, digestion drip tray-stainless steel-ss304, exhaust fume condensation- in water, scrubber tank - stainless steel304,scrubber water leveller – floatswitch, scrubber tank capacity - 10 litre,scrubber suction pump - giant ?lter pump, distillation expansion vessel -glass vessel with te?on insert for alkali addition inlets nippon’s for alkali addition and steam addition, scrubber water re-circulation pump - 2 magnetic pump with ?ow rate of 18l/min, scrubbing tubing hardnes - silicone tube 70±5shorea,temp.resistance-60°c+200°c, real time monitoring of process – yes,no of distillation-one at a time,distillation programme - 5 program /3 steps, distillation programme steps - alkali, reaction delay and process, distillation dosing pump - for alkali addition 24 dc motor 500ml/min, distillation steam generator - stainless steel-ss304 with pressure release valve to back suction of sample, distillation water condenser - glass with 2 bulb and coil condenser distillation solenoid valves for steam,re?lling and vent, distillation heater – immersionheater, distillation heater wattage - 1500 w, distilled water tank – pvc, distilled water tank capacity - 5 lit , distillation reagent tank – pvc, distillation reagent tank capacity - 2lit,electrical requirement - 230v/50hz/16a, real time monitoring of process – yes, nitrogen recovery -99.5% , nitrogen reproducibility - +/-1%, rsd - <1%,lod - 1-200mgwith>_0.1mgofnitrogen, total time for process- 2.5hours