tender for procurement of laboratory equipments for the dept. of chemistry at the ramakrishna mission residential college, narendrapur-- 1 double beam uv-vis spectrophotometers with peltier ( 190-1100 nm ) with required accessories 2 analytical balance, capacity 200 g, readability 0.01 mg 3 digital hot air oven, inner diameter 14x14x14, 5-250 degree celcius 4 hot and cold circulating bath, programmable temperature controller, lcd, microprocessor 5 ultra high purity helium gas 99.999% ( grade 5 ) 7 cum 6 magnetic stirrer 1. with hot plate ( 5 l ) 7 magnetic stirrer 2. without hot plate ( 5 l ) 8 high vacuum pump with oil, cap-100 lpm, ( 6 m3 / hr ) , double stage with 0.25 hp, 220 v , 1ph , 1440 rpm ac motor, auto isolation cum anti oil suck back device as nrv 9 solvents 10 dichloromethane extrapure ( 25 l ) 11 acetonitrile extrapure ( 25 l ) 12 methanol extrapure ( 25 l ) 13 acetone extrapure ( 25 l ) 14 n-hexane ( 99% ) ( 2.5 l )