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Topic: Gas syringe

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	Gas syringe - Wikipedia, the free encyclopedia
		A gas syringe showing its components separate and together
		A gas syringe also known as "glass collecting bottle", is a piece of laboratory glassware used to draw a volume of a gas from a beaker or other closed system, or measure the volume of gas given off in a reaction.
		A gas syringe is a syringe with a hermetic seal around the top and sides, and moves more freely than a normal syringe.
	en.wikipedia.org /wiki/Gas_syringe (142 words)

	Restek Advantage, 1995, Volume 2: Why 5cm Syringe Needles?
		Many years ago, the manufacturers of GC syringes looked upon their customers and noticed that there was no agreement on how long syringe needles should be for conventional vaporizing (split or splitless) injection.
		Long syringe needles are required such that the sample expands from a point near the column entrance towards the rear.
		Before being diluted with carrier gas, 2µl of a solution in hexane produce around 500µl of vapor, in dichloromethane as much as 900µl, which shows that the internal volume of an 80mm x 4mm ID liner must be fully exploited.
	www.restek.com /advantage/adv_1995_02_koni.asp (1625 words)

	Oral Syringe -- Recommendations and Resources (Site not responding. Last check: 2007-10-26)
		Syringes are used to transfer small amounts of liquids or gasses to or from otherwise inaccesible areas.
		Syringes are used in conjunction with hypodermic needles for injections of liquid or gasses into body tissues, or for their removal from the body.
		Glass syringes may be sterilized by the use of an autoclave, however, modern medical syringes are made from plastic because it is cost-effective to dispose of them, which further reduces the risk of spreading blood-borne diseases.
	www.becomingapediatrician.com /health/108/oral-syringe.html (1101 words)

	Determination of the number of gas molecules
		First, record the chemical formula of the gas you will be measuring on your data sheet in the "gas being observed" line and then make your way to a "gas" station.
		To calculate the mass of the gas in the syringe, subtract the mass of the empty syringe from the mass of the syringe + gas (as shown below).
		After the mass of the gas has been recorded, then the next step is to calculate the number of gas molecules in the syringe.
	ch185.semo.edu /gaslab/gases2.html (585 words)

	[No title]
		A molar volume of a gas is the volume occupied by one mole of a gas at STP, or one atmosphere and 0(C. The reaction studied in this laboratory is magnesium metal reacting with excess hydrochloric acid.
		Gas bubbles will form and force the acid solution out of the hole in the syringe.
		The total pressure in the syringe is the sum of the hydrogen gas and the water vapor pressures.
	www.umsl.edu /~jscumsl/chem11/Labmat/MolarVolume.doc (623 words)

	Gas tight syringe (Site not responding. Last check: 2007-10-26)
		Gas tight syringes sge gas tight file ust in water dl039250f0 25ml sge start here gc in the syringe syringe disp 60.
		Gas tight syringes syringe gastight luer of its ends tight hamilton gastight syringe gas tight syringes.
		Gas and liquid 51 varian inc scientific the pump was advisoryactive soil gas 1700 series gas october 1996 p and turn the!
	1014.yweszkqyb.info (3011 words)

	Custom Sensor Solutions: Application Note
		The syringe can be filled to the mark from a second bag containing clean cylinder air or nitrogen; laboratory air may be drawn in through a charcoal filter.
		To avoid loss of standard gas from the open syringe by diffusion, a 12" length of thin tubing is connected to the Luer fitting on the syringe, and the end of the tubing is closed with a valve or a plug closure.
		Gas mixtures can be conveniently made by drawing the sample air through a three-port solenoid valve whose inlets are connected to the standard and diluting gases, respectively.
	www.customsensorsolutions.com /dilution.htm (2697 words)

	BIOGEOCHEMISTRY (Site not responding. Last check: 2007-10-26)
		Additionally, when gas pockets were observed, headspace samples were complemented by vacutainer samples, which were collected directly from gas voids formed in the core liner by penetrating the liner using a syringe connected to a penetration tool.
		Gas chromatographic analyses of headspace samples resulting from both protocols were performed in an identical manner.
		A 5-mL volume of headspace gas was extracted from the vial using a standard gas syringe.
	www.ga.gov.au /odp/publications/201_IR/chap_05/c5_3.htm (2401 words)

	How to Generate Gases in Large Syringes
		The word “gas” causes most teachers to think of expensive lecture bottles that mysteriously become empty without notice and are then impossible to dispose of — or of the drawings in textbooks that show pneumatic troughs and the exotic apparatus with its delivery funnel, round-bottom flask and tubing.
		With our microscale gas chemistry techniques, you and your students will learn that gases can be produced cleanly, quickly, and cleverly in completely self-contained reaction chambers (big syringes without needles) while your students watch in awe at the reaction taking place in their own hands in front of their very eyes.
		The gas-filled syringe may be "washed" in order to remove traces of unwanted chemicals from the inside surfaces of the syringe before the gas is used in experiments.
	mattson.creighton.edu /HowToPrepGases/Index.html (3367 words)

	Pressure-Volume Relationship in Gases
		The gas we use will be air, and it will be confined in a syringe connected to a pressure sensor (see fig.1).
		When the volume of the air in the syringe is changed by moving the piston, a change in the pressure exerted by the confined gas results.
		Move the piston of the syringe until the front edge of the inside fl ring is positioned at the 10ml mark.
	www.scienceteacherprogram.org /chemistry/PMathew97.html (840 words)

	Catalytic Cracking Process
		A gas collection syringe is attached via a three-way stop cock to the hose connection of the receiver take-off adapter.
		The plunger of the gas syringe is positioned at the 0 mL mark.
		The three-way stop cock (5) is turned in a manner allowing the gas liberated in the reaction mixture to pass directly into the gas syringe (3).
	www.uni-regensburg.de /Fakultaeten/nat_Fak_IV/Organische_Chemie/Didaktik/Keusch/D-Crack-e.htm (350 words)

	Gas/Liquid Syringe Replacement Parts
		There are 2 different styles of plungers for the gas/liquid syringes, an adjustable seal tension plunger and a fixed seal tension plunger.
		The adjustable seal tension plungers are generally used either where you would want to tighten the tension to keep the plunger from moving or you would like to completely release the tension to free the plunger.
		There are 2 different styles of barrels for the gas/liquid syringes, one with a fixed (cemented in place) needle and another for removable needles.
	www.lplc.com /syringes/glrepl.html (222 words)

	Sample Priority
		Fill syringe again, hold tip upward and draw in extra air, swirl water and air to remove bubbles from the stopper, expel the air then tap the syringe hard to move all air bubbles to the tip.
		Hold the syringe by the bottom of the barrel so as not to warm the water with your hands, submerse the syringe back in the sample water, and shake syringe for at least 1 minute to equilibrate.
		Insert the tip of the nylon syringe valve into the side vent of the 3-way valve on the sample syringe; hold the sample syringe vertically so that the nylon syringe is perpendicular to it.
	www-personal.umich.edu /~gwk/research/arctic/lwmethod.html (4900 words)

	Boyle's Law
		When the volume of the syringe is changed by moving the piston, a change occurs in the pressure exerted by the confined gas.
		With the 20-mL syringe disconnected from the Pressure Sensor, move the piston of the syringe until the front edge of the inside fl ring (indicated by the arrow in Figure 1) is positioned at the 10.0 mL mark.
		Newer Vernier Gas Pressure Sensors have a white stem protruding from the end of the sensor box—attach the syringe directly to the white stem with a gentle half-turn.
	web.centre.edu /muzyka/che11/131lab/Boyles_Law.htm (1246 words)

	Chlorine Microscale Gas Experiments
		Stop the gas generation after the syringe is full by removing the latex syringe cap while it is directed upwards.
		The gas-filled syringe is "washed" in order to remove traces of unwanted chemicals from the inside surfaces of the syringe before the gases can be used in experiments.
		Remove the latex cap from the syringe and equip the syringe with the latex tubing/gas dispersion apparatus as shown in Figure 3.
	mattson.creighton.edu /Cl2/index.html (2510 words)

	Gas Analysis: Hydrocarbons and Fixed Gases
		After separating in the column, the carrier gas carries each component into the detector where components are detected based on the difference in thermal conductivity between the carrier gas and the component.
		The units in gas composition are all based on volume of the component per volume of sample (volume/volume).
		There are a variety of forms of gas analysis including environmental (stack, ambient, indoor), industrial hygiene, petroleum gasses and others in which the determination of both trace organic and inorganic components are important.
	www.wcas.com /tech/tbgasfix.htm (597 words)

	Sources of error in A-aDO2 calculated from blood stored in plastic and glass syringes -- Wu et al. 82 (1): 196 -- ...
		the syringe size was not indicated in the study by Mathur (7).
		Blood gas analysis: effect of air bubble in syringe and delay in estimation.
		Plastic or glass syringes: a comparison of the changes in oxygen tension when blood or water samples are stored in iced water.
	jap.physiology.org /cgi/content/full/82/1/196 (2998 words)

	Gas/Liquid Syringe Needles
		These needles fit only the gas/liquid syringes and not the micro or double action syringes (their replacement needles are found here).
		A syringe closure is like a needle nut, except it had no hole for the needle.
		These valves screw on to the end of the syringe between the needle and the barrel.
	www.lplc.com /syringes/glneedle.html (275 words)

	grahamslawexperiment (Site not responding. Last check: 2007-10-26)
		In this experiment, a syringe is filled with a gas.
		The syrnge is plunged into an evacuated flask (a flask with no air or other gas in it - a vacuum) and the gas starts to escape from the end of the needle into the evacuated flask.
		For this first set of experiments, we suggest that you keep the initial temperature of each gas at 298K and the initial pressure of each gas at 1.00 atm.
	www.chem.iastate.edu /group/Greenbowe/sections/projectfolder/grahamslawexperiment.htm (285 words)

	grahamslawexperiment
		The syringe has markings on it to indicate the volume (in mL) of the gas in the syringe.
		You can measure the mass of the gas.] The syringe needle is plunged into an evacuated flask (a flask with no air or other gas in it - a vacuum) and the gas starts to escape from the end of the needle into the evacuated flask.
		The rate of effusion of hydrogen gas is __________________ as the rate of effusion of oxygen gas.
	www.chem.iastate.edu /group/Greenbowe/sections/projectfolder/effusiontutorial2.htm (679 words)

	BLOOD GAS SAMPLING: MIXED VENOUS
		Evaluate pulmonary artery tracing to verity that the catheter is not wedged.
		Aspiration from a catheter that is wedged can cause arterialized blood to be drawn into the syringe, falsely elevating the result.
		Vigorous aspiration can cause arterialized blood from the pulmonary capillary to be drawn into the syringe, falsely elevating the result.
	www.lhsc.on.ca /critcare/icu/procedures/bldgasmv.htm (579 words)

	Gas syringe
		The gas syringe is used to collect and measure the amount of gas produced during a reaction.
		When the syringe is full any further gas escapes from a vent.
		Enter a label to be displayed on the side of the gas syringe.
	www.crocodile-clips.com /crocodile/chemistry/Help/parts_listing/chemistry_parts/glassware/measuring/gas_syringe.htm (334 words)

	Gas Molecular Weight (Site not responding. Last check: 2007-10-26)
		The syringe needle is inserted into the septum.
		After filling the syringe it is found to have a mass of 42.8570 grams.
		Therefore, the mass of the gas is 42.8570 - 42.8570 = 0.0541 grams.
	genchem.chem.wisc.edu /sstutorial/Text9/Tx95/GasMW/MWUnkFill.htm (63 words)

	ORGANIC GEOCHEMISTRY
		volume of gas from the headspace in the vial was removed with a glass syringe for analysis by gas chromatography.
		A second gas-sampling procedure was used for gas pockets or expansion voids that appeared in the core while it was still in the core liner.
		A device with a heavy-duty needle was used to penetrate the core liner, and an attached syringe was employed to collect the gas (Kvenvolden and McDonald, 1986).
	www-odp.tamu.edu /publications/175_IR/chap_02/c2_7.htm (855 words)

	Rate of reaction 3
		The gas can be captured and measured using a gas syringe.
		A position sensor can be attached to the syringe to record the rate of the reaction.
		Set up the flask, position sensor, the gas syringe and 1g of large marble pieces as shown.
	www.rogerfrost.com /exp/rates_c.htm (297 words)

	[No title]
		The sample is analyzed with a gas chromatograph, which is interfaced with a mass spectrometer.
		The sample extract is introduced into the gas chromatographic column, which separates the components of an ignitable liquid.
		Method History Prior to March 2001, gas chromatography with flame ionization detection was the primary instrumental methodology utilized for ignitable liquid cases.
	oak.cats.ohiou.edu /~mccord/488alabmanual.doc (7190 words)

	Enzyme Catalase
		I chose the gas syringe rather than to count the bubbles produced in a measuring cylinder because it is easier to use, the results will be more accurate and the gas syringe reduces the possibility of gas escape.
		I used the gas syringe rather than to count the number bubbles produced in a measuring cylinder because it is more easier and accurate and it also gives a less possibility of gas escape.
		I used a gas syringe to collect the volume of gas produced.
	www.freeessays.cc /db/41/sff170.shtml (2216 words)

	John Straub's lecture notes (Site not responding. Last check: 2007-10-26)
		The pressure of a fixed quantity of gas at a fixed temperature is measured as the volume of the gas is varied.
		Vary volume of gas in the syringe and record pressure at each volume.
		Understanding: For a fixed quantity of gas at a fixed temperature, the pressure of the gas is inversely proportional to the volume of the gas.
	people.bu.edu /straub/courses/demomaster/boyleslaw.html (256 words)

	Demountable Beta Gas Cell 5cm or 10cm
		The demountable Beta Gas Cell comes complete with a 10cm or 5cm Pyrex Cell body, cell mount, 2 Viton® O-rings or gaskets, 2 PTFE gaskets, and 2 septa, but without windows.
		When assembled, the cell will be gas tight and operable at both reduced or positive pressures.
		Filling of the cell is conveniently handled with a gas tight syringe (ICL Part no. 0009-609).
	www.internationalcrystal.net /iclsite3/icl51.htm (75 words)

	Module 2: IV Access
		There is a rubber cube in each of the arterial blood gas kits that should be used to cover the needle tip prior to removing it from the syringe.
		The syringe is “vented” at the plunger to allow the sample to enter under the pressure of the artery.
		Holding syringe at about 45 degrees, puncture the skin just distal to where the index finger is palpating the radial pulsation.
	meds.queensu.ca /~pmsp/iv/ABGmod2.htm (1248 words)

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