bids are invited for automatic weatherstations , multiparameter water quality meter , water analyser , respirable dust sampler , flame photometer , depth, pump, sediment sampler , bod incubator , automatic kjeldahl nitrogen protein analyzer with digestion system, fume scrubber and re-circulating water pump , muffle furnace , analytical balance , vertical deep freezer , refrigerator , hot air oven , milipore water purification system , rotary evaporator with vacuum pump vacuumcontroller and chiller , magnetic stirrer , centrifuge with rotors , platinum crucibles , porcelain crucible , micropipette , agate mortar pestle , membrane filter holder , combi rack for test tube and centrifuge tubes , clamp with stand , sieve set , timma mill , centrifuge tubes , hot plate , air filter , water filter , glassware , planetaryball mill pm 100 , automatic absorption spectrophotometer and fluorescence spectrophotometer accessories total quantity : 1050