During the operation of biochemistry machines, pure water is used for cleaning, colorimetry, dilution, temperature transfer and pressure transfer. Different manufacturers of various models of biochemistry analyzers use pure water to meet national requirements. The following is the impact of unqualified pure water on the
biochemistry analyzer.
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1. impurity components of pure water will affect the reaction process of many biochemical projects, weakening, enhancement, inhibition, acceleration and so on various situations. This can cause test data disorder. There are numerous documents available online. Typical are calcium, magnesium, triglycerides and some enzyme items.
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2. The impurity components of pure water mixed with reactants can easily remain on the surface of the cleaning parts, the inner and outer arms of the spiking needle tip, the inner and outer walls of the cleaning mechanism needle, the inner wall of the colorimetric cup, the surface of the stirring bar, the surface of the cleaning tank thermostat, etc. They are not easy to clean and bring about the disorder of the test data. They are not easy to be cleaned, will bring cross-contamination between items, resulting in test data disorder.
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3. Inorganic salt ion impurity precipitation of pure water will cause wear and tear of the quantitative syringe, leakage of gas and liquid, bringing quantitative errors.
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4. Pure water inorganic salt ion impurities will damage the gas-liquid circuit of the solenoid valve diaphragm, seal failure, delayed action or failure. This will bring a series of pipeline failure.
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5. Impurity components of pure water will damage the degassing tank device of biochemistry machine above 400 speed, the degassing membrane will crack, the degassing function will fail and water will leak, causing quantitative error and the precision of the result will be reduced.
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6. The inorganic salts of pure water are analyzed and adsorbed in the inner wall of each cleaning and waste liquid flow path. This is easy to make the reactants hanging wall, resulting in the narrow inner diameter of the pipeline discharge is not smooth. Severe complete blockage, waste liquid overflow.
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7. Inorganic salt components of pure water is very easy to wear the colorimetric cup, especially the plastic colorimetric cup, resulting in abnormal cup blank.
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8. Inorganic salt components of pure water will damage the hydrophobic coating of the stirring bar, the surface finish of the coating decreases, foreign objects are easy to adhere to, bringing serious cross-contamination.
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9. The organic impurities of pure water often block the valves, water filters, fine pipes and reducer joints of the liquid path.
Because the pure water quality brings a thousand and one problems. These failures are relatively troublesome to deal with, and are accumulated over time before they slowly manifest themselves. Once a major failure, maintenance or even repair must be carried out.
So water machine use must pay attention to.
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1. Regularly replace the cartridge. New water purifier use the early observation and testing statistics to determine the frequency of replacement, strict implementation and record, will reduce the frequency of replacement resin reverse osmosis membrane, extending the life of the water machine.
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2. Daily record of the conductivity or resistance of the water purifier display. Standard: conductivity ≤ 1 or resistance: ≥ 1. These two are the reciprocal of each other. They indicate how much inorganic salt ions in the water, is the most important indicator of biochemistry machine with water.
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3. Every three months to thoroughly clean and disinfect the water machine storage tank to prevent the growth of microorganisms in large numbers.The most common biochemistry machine water machine principle: reverse osmosis + resin adsorption. Process: tap water through two or three filter cartridge filtration (or pre-treatment sand filter + activated carbon), high-pressure pump pressurized into the reverse osmosis membrane to remove ≥ 95% of inorganic salt ions. A small amount of remaining ions after reverse osmosis is given to the resin column for adsorption and removal.
Seamaty SD1 biochemical analyzer is low maintenance. analyser machine has no internal liquid circuit, pump valve and other wearable parts. Single-person reagent tray is used in combination, which is free of cleaning and maintenance.
