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Vacuum-Filtering Flasks

Glass Container: 1 gallon (holds over 4 litres) with aluminum lid and 7" (19 cm) internal height for 6" electrodes. Ideal for charging water. Has flat sides allowing inspection of electrodes. Weighs 13 kg (12 lbs). Not available in stores. Price $40 US. For Glass Containers 1 gallon Filter flasks are used to speed up filtration. The side tube allows air to be released or can be connected to a hand pump or to a vacuum aspirator to a water tap (faucet). The flowing water creates a slight vacuum in the filtering bottle which pulls the liquid through faster than gravity alone. We find that it works well in our lab without any vacuum pump.  This 1000ml (1 litre) filter flask special includes the polypropylene plastic flask, 1 litre plastic Buchner funnel, rubber stopper and pack of 100 medium speed, 110mm diameter, qualitative filter papers.  Ceramic funnel and glass flask are available in place of unbreakable plastic. Price for complete system $240 US
Laboratory Filtration Systems Lab System 
Designed for laboratories that test a few samples per day. The simple combination of a hand vacuum pump and a Sterifil system can be bench-operated or used as a portable system.
Gravity Water Filter Urn  These are outstanding, affordable, drinking water filter systems which serve also as EMERGENCY WATER FILTERS . This water filter may be stored un-used in homes, businesses, automobiles, etc. indefinitely.
It is always ready for use!
Housings are manufactured from food grade, high density blue polypropylene plastic. The housings are light weight and nearly indestructible. They can accommodate one or two ceramic filter candles. The upper chamber is filled with water which then gravity feeds through the Doulton ceramic(s) into the lower chamber. An easy to turn 90 degree on-off spigot is used as the outflow tap.
 
Technical Details
No of Elements One or Two
Capacity (litres) 5/10
Output / 24 hours (litres) 20/40
Height (mm) 590
Width (mm) 250
Empty Weight (kg / lbs) .9 / 2
; Price includes one ceramic filter to remove particles greater than 0.5 microns  $215 US or  $285 Can.
Glass Container: 1 gallon (holds over 4 litres) with aluminum lid and 7" (19 cm) internal height for 6" electrodes. Ideal for charging water. Has flat sides allowing inspection of electrodes. Weighs 13 kg (12 lbs). Not available in stores. Price $40 US.