bids are invited for pycnometer bottle relative density bottles with capillary bore inter changeable teflon stopper , glassware bottles borosilicate reagent bottle with screw cap 250ml , buchner funnel 100mm , buchner funnel with sintered disc capacity 80ml porosity grade 2 diameter of disc 35mm approx height mm 142 stem diameter 8mm , culture tube culture tubes flat bottom with pp cap 50ml , filter flask with glass tubulation 500ml , kjeldahl flask for tulin distillation unit 350ml , measuring cylinder class a 5 ml glass , membrane filter holder 250ml , glass rod 16x16 mm glass , 0 45 micrometers nitrocellulose polypro filters filters 25mm , 0 45 micrometers nitrocellulose polypro filters filters 45mm , 0 45 micron membrane filter filter , burette stand clamps , mortar pastle porcelain mortar with spout glazed outside except bottom unglazed inside pestle unglazed to grinding surface 2000ml , rubber stoppers solid should fit in 500ml conical flask , whatmman filter paper no 42 , whatman filter paper no 1 , white laboratory silica sand sea sand hi ar , aluminium box , brush bottle hard nylon bristles mounted on twisted gi wire head 120 65mm overall length 500mm , brush brush flask hard nylon bristles mounted on twisted gi wire head 130 50mm length 400mm , brushes brushes beaker hard nylon bristles on stainless steel wire head 150 85mm overall length more than 400mm , carboy ldpe with pp closure and stopcock 10litre , keen box radius typically around 2 5 to 4 5 cm depth approximately around 2 5 cm to 5 0 cm material made of durable metal to withstand repeated use in water saturation experiments , thermometer , sieves 8mm 4mm 2mm 1mm 500um 250um 53um , silver stainless steel 304 plunger total quantity : 1818