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The determination of LUMEX capillary electrophoresis is divided into two phases: sample preparation and analysis. The first stage is based on sample degassing, acid extraction to isooctane, and evaporation of the residue into a water/methanol mixture. The second stage is based on the differential migration of the ionic form of the analyzed compound in a fused silica capillary under the applied electric field. Sodium lauryl sulfate can be added to the electrolyte to provide a so-called pseudo-steady state for better resolution. The detection wavelength is 215 nm. To increase selectivity, the wavelength can be switched to 315 nm during operation. 
The cleaning machine uses high pressure bubble water to clean,effectively separate the surface attachments of the cleaned objects, simulate the basic action of manual cleaning , and avoid touching ,knocking and scratching in manual cleaning .The speed of the conveyor belt is adjustable, and the user can arbitrarily set according to different cleaning contents.Cleaning capacity is large ,cleaning rate is high and material is not damaged.
Quantitative studies of alpha- and beta-tartaric acid (picric acid and hopsin) and bitter iso-alpha-acids (isomers) are important at all stages of beer production. Hops acid is a biochemical marker of certain hops. The bitter alpha-acid stabilizes the beer foam, inhibits the growth of harmful microorganisms, and imparts a bitter taste to the beer.