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After the autosampler has been used for a long time, there will be problems with the wear of the claw sleeve. After the claw sleeve is worn, the injection vial may not be grasped or the vial may be caught halfway. On the one hand, the wear of the claw sleeve is the cause of the rubber aging and normal wear and tear on the one hand. On the other hand, it is related to the use of the vial with the incorrect size. We have used the vial of Shimadzu chromatography for a while and found that the claw sleeve is worn. It is quite powerful, and it will be discarded later.
There is a metering pump on the autosampler. This part is relatively concealed. It usually does not require special maintenance. Few people will think about it. In fact, the metering pump is similar in structure to the front liquid pump. Plunger rod and sealing washer All are versatile, except that there is only one plunger rod.
The needle seat is clogged, sometimes it is accidentally misused with a hard plastic vial cap Fisher HPLC vials china manufacturer or the sample pad on the cap is reused many times. When the syringe needle is tied down, the cap or bottle pad will be scrapped. After sucking into the pinhole, the needle falls on the needle holder, and the mobile phase flows through the needle holder through a 100ul loop. The debris is brought to the needle holder inlet, causing the needle seat to block, the system pressure to be too high, or the needle seat to leak. Lift the needle, leave the needle holder, remove the front cover of the autosampler module, remove the screw that connects the needle seat to the six-way valve, remove the needle seat forcefully, and pour the needle seat onto the liquid pump. Pressurize for 5ml/min, the general blockage can be washed out immediately. If it can't be washed, put the needle seat into the ultrasound system, then pump it, or simply extend the pipeline and pump it. Ultrasound Fisher HPLC vials china manufacturer.
This is the end of the introduction of Several glitch analysis of the autosampler. I hope it can help you..jpg)
