supply of coal laboratory instruments / equipments at csctpp , chhabra . , digital analytical balance as per specification , electronic analytical balance as per specification , muffle furnace as per specification , humidity chamber as per specification , jaw crusher as per specification , roller crusher as per specification , pulverizer as per specification , oven large as per specification , desiccators 110 / 160 mm , desiccators 200 / 210 mm , sieve shaker , sieve 12 . 5 mm , sieve 212 micron , sieve 3 . 35 mm , sieve 2 mm , aluminium / ss tray , weight box as per specification , belcha ( for coal collection )