BS 4591:1990 pdf free

04-30-2021 comment

BS 4591:1990 pdf free.Method for Determination ofdistillation characteristics of organic liquids (otherthan petroleum products).
BS 4591 In each of the four sides of the draught screen arethree air-vent holes with their centre 25 mm abovethe base of the draught screen.These holes occupythe positions shown in Figure 5,the diameter of theholes situated centrally in the wider side being 25 mm, and the diameter of theremaining 10 holes 12,5 mm.
At the middle of each of the wider sides, a verticalslot for the side tube of the distillation flask, dimensioned as shown in Figure 5, is cut downwards from the top of the screen. A removableshutter, conforming to the dimensions in Figure 5, isprovided for closing whichever vertical slot is not inuse.
A shelf of hard heat-resistant board 6 mm inthickness and possessing a centrally cut circularhole 110 mm in diameter, is supported horizontallyin the screen and fits closely to the sides of thescreen, to ensure that hot gases from the source ofheat do not come into contact with the sides or neckof the flask.The supports for shelf may consist oftriangular pieces of metal sheet firmly fixed to thescreen at its four corners.
In one of the narrower sides of the screen, a door isprovided having the dimensions shown in Figure 5and overlapping an opening in the screen by approximately 5 mm all round.
In each of the narrower sides of the screen, a micawindow is placed centrally with the bottom of thewindow level with the top of the heat-resistant shelf.The dimensions and the positions of the windowsare shown in Figure 5.
The heat-resistant board (5.1.6) shall be placed onthe top of the heat-resistant shelf of the draughtscreen so that the two holes are approximatelyconcentric.The flask is then placed in position so asto close the hole in the heat resistant board completely.
The flask shall be connected to the condenser so thatthe end of the side tube projects at least 25 mm intothe condenser and is coaxial with it.BS 4591 pdf download.

Download infomation Go to download
Note: Can you help me share this website on your Facebook or others? Many thanks!
BS ISO 7425-1:2021 pdf free Free BS Standards

BS ISO 7425-1:2021 pdf free

BS ISO 7425-1:2021 pdf free.Hydraulic fluid power cylinders一Dimensions and tolerances of housings for elastomer- energized, plastic-faced seals Part 1: Piston seal housings. 5.2 Axial length For axial lengths for the nominal piston diameters, see Iable3. If the...
Get More
BS EN ISO 8407-2021 pdf free download Free BS Standards

BS EN ISO 8407-2021 pdf free download

BS EN ISO 8407-2021 pdf free download.Corrosion of metals and alloys一Removal of corrosion products from corrosion test specimens. 4.1.6 The true mass of the specimen, after removal of the corrosion products, will be a value between the...
Get More


Anonymous netizen Fill in information