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  • where does the contaminant come from?

    According to our experience, there are two main sources of metal contaminants in food raw materials, raw materials, biochemical raw materials, foods and pharmaceutical preparations: one is raw materials and auxiliary materials used in production; the other is mixed in the production process.
    Although the production process has strict quality management procedures, such as GMP, HACCP and other quality management practices, the corresponding control measures have been taken for the incorporation of metal contaminants, but they cannot be completely avoided.
    1. Metal foreign matter introduced in production equipment. If the equipment is subjected to high temperature, high pressure, abrasion, acid, alkali, organic solvents such as ethanol for a long time, it will be chipped or rusted and will fall off the iron filings. This is the main source of metal foreign matter in the product. Old defective pieces, parts on conveyor belts, broken wires of stainless steel screens, slicers and crusher blades all have hidden dangers of metal foreign matter. Such as the large iron pan of fried tea, the iron scraps that have been worn away for a long time cause the incorporation of metal foreign matter. For example, the mechanical stirring device used in the enamel or glass-lined reactor is cast iron or the screw used is cast iron. Pure water pipes and air pipes, if the method of passivation is not correct or the filter is not checked in time, metal foreign matter will be mixed in.
    2. The metal introduced by the raw and auxiliary materials is mixed, such as broken needles in the meat, and the powdery materials are mixed with paper clips, staples, hooks, and the like. Botanicals, animal cartilage or organs are contaminated with metal particles during storage or transportation, and are not cleaned or cleaned at the time of production.
    3. Caused by human factors, such as buttons, coins, keys, rings, necklaces, etc.
    4. Caused by repairs at the production site, such as forgotten screwdrivers, nuts, screws, welding slag during welding, and metal chips that are not thoroughly cleaned.
    5. The production process is defective. For example, some powdered products are not sieved before packaging. Some products, due to their physical properties, can not pass the 80 mesh sieve, only through the 40 mesh sieve.
  • What main hazards of metal contaminants?

    Hazard 1: There are potential safety hazards. Metallic foreign objects can ruin your teeth, scratch or jam your mouth and throat. For example, granule medicine, you wash it with water. After drinking it, you can see the root of the cup with stainless steel wire (length 2cm). What do you think?
    Hazard 2: Metal contaminants often contain heavy metals such as lead, arsenic and mercury. If you take metal-containing foods and health foods for a long time, it will have a subtle influence on the human body, such as chronic arsenic poisoning.
    Hazard 3: Give consumers an unpleasant feeling, make consumers feel uncomfortable, disgusted, disgusting. For example, if there is a black spot on the surface of a white tablet (iron filings) or a black spot (iron filings) after seeing a white tablet, do you still take it? You bite into a stainless steel wire and you still Will you continue to buy this brand of bread?
    Marketing studies show that a satisfied customer will tell his joy to 8 to 12 people; and an unsatisfied customer will tell his complaints to 20 to 24 people.
    Hazard 4: The destruction of high-grade production equipment caused by the incorporation of metal foreign matter. For example, if the particles contain metal foreign matter, it is easy to wear the metering plate of the capsule filling machine.
  • I want to buy a machine that tests 0.5mm metal contaminants.

    The actual test sensitivity of each machine varies greatly from product to product. You need to provide specific sample and product data.
  • Can the glass, plastic, hair and other contaminants in the product be detected?

    The machine can only detect metals with magnetic and electrical conductivity. Glass and plastic, hair have no metal characteristics and cannot be detected.
  • Why can someone else detect the metal of ( )mm, can't you?

    The data we give is the result of a nine-point positive central position test to ensure that the data is true and valid.
  • What is a nine-point test?

    The detection window is divided into nine: left upper left, middle left lower, middle upper middle middle lower, right lower right middle right lower, the middle of these positions is the most difficult to measure, so the data detected in the middle is the most accurate
  • Why can my machine detect 0.8mm iron balls when testing bread, but not when testing cakes?

    All metal detectors will have different test results due to different products tested. This is a product effect.
  • What is the product effect?

    Some products containing salt, sugar, moisture will emit a signal similar to the passage of metal when passing through the metal detector. We call this the product effect.
  • My current product is 36cm long, 22cm wide and 10cm high. How big is the through aperture?

    The reasonable range of width is increased by 10cm, the height is increased by 2-5cm, and the recommended aperture size is 46cm wide by 15cm.
  • I need a bigger aperture, I am afraid I will have a bigger product in the future.

    The higher the detection aperture, the lower the detection sensitivity, the machine can not be fit for all size products.
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