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Occurring balance jumper and troubleshooting

Spectrum of the mobile phase degassing bubbles causes and several methods of TalkingabouttheCauseofThatOccurringGasinHPLCinfluentandSomeWaystoGetRidofGas mouth Lin Guo B GDXiaDli lack of Informal Guo Xiaolin, female, engineer. Work: The Quality and Technical Supervision Changji. Address: 83II 【Xinjiang Chang Chuan 7 Road, the ancient health Abstract This paper introduces the effect from the mobile phase liquid chromatography j & P bubble in the analysis of the causes and adverse consequences, as well as several mobile phase degassing methods. Key words high performance liquid chromatography mobile phase bubble degassing time】 2004-06-28 【Received separation performance because of its high-performance liquid chromatography, high sensitivity, rapid analysis of selective advantage in many areas of higher gain widely used,tory burch sale, but often in the course of this type or that type of situation encountered, and work troubles, such as the mobile phase of the bubble led to an increase in baseline noise, can cause serious decline of the sensitivity analysis is not the most common problem. The author access to information on this issue and concluded that the practice experience for your reference: High performance liquid chromatography mobile phase was used from 'organic solvent, buffer,ugg prezzo, water and mixtures thereof. Mobile phase is due to bubbles of gas in the liquid to super saturation (half-scale) state, the amount of dissolved gas in solution over saturation as long as the light increases the amount of vibration or agitation will lead to bubbles, if a liquid is allowed to contact with air without external interference, then sooner or later, and out of gas saturation (equilibrium) state. Equilibrium amount of dissolved air and the nature of the solution, the kinds of gases, the same external conditions also contributed to the bubble solution, the main reason. There are three main environmental conditions: (1) In general solvent temperature to the amount of dissolved gas decreases with increasing temperature, and when the solvent to move from the low temperatures at high temperature is over the form of dissolved gas to bubble Yat out. (2) reduce the gas pressure increased the partial pressure of the gas dissolved in the solvent increases, reaching saturation at higher pressures the pressure drop once the solution will bubble. (3) solvent mixture of dissolved gases in both the categories and also the kinds of solvents, the low polarity of the gas more easily dissolved in solvents of low polarity, whereas change course, but when mixed in two different solvents , are often able to accommodate the amount of air than the total amount of solvent to the air can hold is small, this is bound to produce bubbles. Degassed mobile phase is usually present in the following ways: (1) heating and mixing the mobile phase from low to high temperature laboratory storage room,stivali ugg, can be placed in the mobile phase slightly above room temperature water bath and Stir to remove escaping gas, this method slips. Easy: (2) using a variety of degassing device, such as vacuum degassing, ultrasonic, helium degassing, and so allow more and more into the degassing technology, equipment used in the field of high performance liquid chromatography (3) location of the mobile phase container can be reduced to improve air bubbles will flow Tong container in high places than the pump, the pump of the population at slightly from the 'pressure, even if there are air bubbles under pressure into the pump also accounted for a smaller size, bubble volume pipette with a small easy to buoyancy in the float, easy access to pump this method is simple and effective: In addition, the degassed sealed to prevent the flow of the corresponding re-integration into the outside plant solution gas high-performance liquid chromatography mobile phase generated Tong reasons and to prevent the bubble, while the degassing to take appropriate measures will effectively prevent a result of such failure causes, while improving the accuracy of the results has been away from the direction of the operator to go back a rebound to complete the second round beating. If the right-front knife blade gap is small, the torque M makes the beam rotation around the BC side of the moving line, the whole process and the opposite effect. Accordingly, as long as the seam around the right knife can be adjusted to eliminate the same purpose. In general,ugg boots günstig, if the left circle knife knife slit slit less than the right, even if inconsistent, from the results, it does not have the phenomenon of double jump needle, because torque is A, B balanced by two support screws. Nevertheless, we should note about sewing and cutting knife slit width consistency. Otherwise,true religion jeans, the result of a blade angle of the first long-term focus is worn, thus effectively reducing the effective length of the blade factory, thereby increasing the balance of instability fierce new plant hormone. Since 'time, f_j balance jumper phenomenon is eliminated, the A, B, bovine fl mow' height has occurred r changes affect edge blade and knife edge bearing phase mow position change, which may also lead to double jump needle phenomenon, Shí this should be addressed. Measurement and Testing of a 2004 ・ №. 7

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