Prevention and solution of liquid chromatograph joint failure
1 Parts used in the design of the liquid chromatograph instrument. The length of the connecting pipe of different manufacturers is not exactly the same. The mixing is easy to cause leakage, thread damage, column inlet and outlet, and nut damage of the inlet of the detector. The joint pipe does not seal well in the nut, which may lead to liquid leakage. Increased dead volume, etc. It is recommended that you do not interchange the joints and blades produced by different manufacturers. 2 Assemble and tighten the fitting as required and do not overtighten. The failure of the low-voltage joint mainly includes loose joints, damaged pipe heads, threaded “sliding wireâ€, and over-heading. The low-pressure connector is tightened by hand, and the locking screw can reduce the occurrence of the above failure. Once the low-voltage connector is found to be damaged, it should be replaced with a new one. The failure of the high-voltage connector is similar to that of the low-voltage connector, and contamination and improper installation often occur. 3 Use the right tool. Be careful when tightening the joint. If it is too tight, it may damage the thread, the blade ring, etc., causing leakage. The worst case is that the joint will break inside the nut. Use hand to tighten the joint and seal without any tools. It is best to use a dead wrench when tightening the joint, and do not use an adjustable wrench to ensure that the joint is not damaged. 4 Clean the connector. When assembling and disassembling the joint, check for the presence of particles and inorganic salt crystals on the sealing surface. These contaminants affect the sealing performance, and more serious will cause the screw to die. Shanghai Jiapeng Technology Co., Ltd. specializes in: UV analyzer, three-use UV analyzer, dark box UV analyzer, black box UV analyzer, black box UV analyzer, portable UV analyzer, three-use UV analyzer, dark box , UV detectors, partial collectors, constant current pumps, peristaltic pumps, gel imaging systems, gel imaging analysis systems, chemiluminescence imaging analysis systems, photochemical reactors, vortex mixers, vortex mixers, glass chromatography columns, Gradient mixer, gradient mixer, nucleic acid protein detector, glass chromatography column, fluorescent whitening agent analyzer, fraction collector, rubber cutting instrument, blue gel cutting instrument, chromatography system and other products. Welcome to inquire. Shanghai Jiapeng Technology Co., Ltd. Telephone 36162366 400 free consultation phone Mobile phone 18918199710 13501668369 Enterprise QQ, 2880150292, 2880150293, 2880150290, 2880150297 Active Pharmaceutical Ingredients Product categories of Active Pharmaceutical Ingredients, we are specialized manufacturer and distributor from China, we have the perfect after-sales service and technical support. Look forward to your cooperation! Active Pharmaceutical,Extracted from Chicken Bile,CAS NO.:81-25-4, Active Pharmaceutical Ingredients SINOCHEM PHARMACEUTICAL CO., LTD , https://www.sinochemnutrition.com