bids are invited for instruments for environmental engineering lab total quantity : 311; 1 ph meter 2 conductivity meter 3 turbidity meter 4 spectrophotometer 5 hot air oven digital 6 muffle furnace 7 b.o.d. incubator 8 portable autoclave 9 vertical autoclave with radial locking system fullyautomatic 10 cod digester apparatus for 6 samples with glassware 11 cod test tube heater with 25 vial capacity 12 high precision electronic balance 220 gram-0.001gram-external calibration model 13 precision electronic balance 600 gram-0.01 gm- external calibration model 14 uv spectrophotometer (double beam) 15 flame photometer digital-microprocessor 16 round hot plate-top-digital 17 shaking waterbath 9 x2 50 ml inner 18 magnetic stirrer with hot plate-digital rpm-2lts 19 jar test apparatus-digital rpm-1litre x 4 stirrer 20 vaccum pump 21 orbital shaking incubator-heating-250 ml x 9 flask 22 horizontal reciprocating kahn shaker - digital 23 dissolved oxygen meter portable model 24 water purification system-distilled and deionized water 25 high volume sampler 26 horizontal laminar air flow-60x60x60 cm 27 centrifuge general system 28 kjeldahl digestion and distillation combined with glass part-12 test positions 29 combo pm 10/pm 2.5 sampler 30 respirable dust sampler 31 portable flue gas analyzer - with high 32 burette 50 ml 33 reagent bottle (screw) 1000 ml 34 reagent bottle (screw) 500 ml 35 reagent bottle (screw) 250 ml 36 measuring cylinder 1000 ml 37 measuring cylinder 500 ml 38 measuring cylinder 250 ml 39 measuring cylinder mixing cylinder 40 volumetric flask 1000 ml 41 volumetric flask 500 ml 42 volumetric flask 250 ml 43 volumetric flask 100 ml 44 volumetric flask 50 ml 45 bod bottle 300 ml 46 conical flask 500 ml 47 conical flask 250 ml 48 conical flask 150 ml 49 conical flask 100 ml 50 beaker 5 l 51 beaker 1000 ml 52 beaker 500 ml 53 beaker 250 ml 54 beaker 100 ml 55 beaker 50 ml 56 centrifuge tube 50 ml 57 centrifuge tube 15 ml 58 petri dish (glass) 59 distilled water bottle 60 cod vials 61 magnet retriever 62 pipette stand 63 plastic reagent bottle 64 pipette pump 65 pipette 50 ml 66 pipette 25 ml 67 pipette 10 ml 68 pipette 5 ml 69 specimen tube 70 funnel 71 centrifuge tube round bottom 72 centrifuge tube 50 ml 73 centrifuge tube 15 ml 74 crucibles