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Now connect the rubber coupling to the center stem of the burette and connect the other end of the coupling to the hose nipple of the Whitey valve Connect the connection tubing to the side stem of the level bottle Assemble the burette clamp around the burette and fasten in place on the support rod
Air Readings: If air readings tend to increase after a period of testing, the caustic solution may cgat diluting and should be replaced with a fresh solution. Open the Whitey valve and repeat the above process again. Contact VuiLen would like to thank all Players who have been with us through all the years.
This solution may cause severe burns to the operator if not handled with care. Close the Whitey valveopen the burette cock and put approximately cc's of water in the level bottleelevating the same above the burette so as to allow the water to run down into the burette to the bottom of the calibrations. Replace the water in the level bottle with caustic solution, filling it approximately half full.
Free English chat room where ESL students and teachers can chat in English with free online chat 24/7. Nickname (Bí Danh).
Choose Room: Chọn Phòng: VietFun, QueHuong, Viet 30+, Viet 40+, Viet 50+, VideoChat. Place the bottle or can to be tested on the base pad and lower the cross bar to the point where the rubber seal just touches the top of the container.
(Required (Cần Thiết)). Now connect the rubber coupling to the center stem of the burette and connect the other end of the coupling to the hose nipple of the Whitey valve Close the Whitey valve and remove the beaker from the piercing needle A 6.
Therefore, it is good practice to bring samples to this temperature prior to testing. This will cause the water top be drawn upward phomg the Whitey valve, displacing any trapped air in the system.
Hold the instrument at the bottom of the base with the right hand while the left hand holds both the guide rod and support rod Usually eight or ten shakes are enough to remove most of the air in the sample. This may be accomplished by pressurizing the instrument and applying a soapy solution to the various connections and ts.
Note: The cross bar is lowered by depressing the lock pates on each side of the cross bar and pushing downwards. The of tests that can be expected from the caustic solution may vary according to the strength of the solution being used. When the lock plates are released, the cross bar will remain firmly locked in position. Password (Mật Mã). The cross bar will remain locked in place with chxt rubber seal compressed to prevent leakage at the point of piercing.
Personal Blog. Connect the connection tubing to the side stem of the level bottle Be careful not to trip the lock chatt after piercing as only a slight upward pressure on the lock plates will release the cross bar. Shake the instrument with a rapid back and forth motion until maximum gauge pressure has been obtained. To prevent overflow, the caustic trap is furnished for attachment at the top of the burette.
Chung toi cung xin thong bao ve viec nang cap phien ban moi do trinh duyet web khong con ho tro Flash Player vao cuoi nam The instrument is now ready for operation but should first be tested for any gas leaks that may occur at various connections. Assemble the burette clamp around the burette and fasten in place on the support rod Tap the tubing to release air into the burette 5. Phong Chat Quy Ba.
The volumes of CO2 gas may be determined by taking the maximum pressure reading during the test and then, immediately after the test, inserting a laboratory thermometer into the chhat and recording the temperature. Close the burette cock and lower the level bottle to its stand 3. Note: Wear protective clothing and goggles when using caustic solution.
Open the Whitey valve full. Cam on su ho tro cua ban, VuiLen. 23 likes. Place a small beaker of water under the chat seal hpong lower the cross chxt so as to submerge the rubber seal in the water. When making the air reading in the burette, the level bottle should be raised so as to bring the liquid in the burette and level bottle to the same level.
It is also advisable to invert the instrument and allow the gas that was released into the burette to be absorbed in the larger bottom bulb of the burette.
While filling the burette, check the plastic connection phong and work out any air bubbles that may be present 9. Depress the lock plates and push the cross bar rapidly downwards until the container is pierced. For very accurate work, however, the operation should be continued until a constant air reading is obtained. We also would like to announce our upgrade of new version due to the web chat is no longer support Flash at the end of Note: The burette is very fragile and may break if it comes in contact with an object while shaking the instrument.
Discard the water.
Set up your own chat room free. The shaking of the instrument allows for more build up of gas in the test container and for the next release of gas into the burette. Raise the level bottle to fill the burette completely and close the burette cock.
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