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scale inhibitor

A fish scale is a small rigid plate that grows out of the skin of a fish. The skin of most jawed fishes is covered with these protective scales, which can also provide effective camouflage through the use of reflection and colouration, as well as possible hydrodynamic advantages. The term scale derives from the Old French "escale", meaning a shell pod or husk.Scales vary enormously in size, shape, structure, and extent, ranging from strong and rigid armour plates in fishes such as shrimpfishes and boxfishes, to microscopic or absent in fishes such as eels and anglerfishes. The morphology of a scale can be used to identify the species of fish it came from. Scales originated within the jawless ostracoderms, ancestors to all jawed fishes today.
Most bony fishes are covered with the cycloid scales of salmon and carp, or the ctenoid scales of perch, or the ganoid scales of sturgeons and gars. Cartilaginous fishes (sharks and rays) are covered with placoid scales. Some species are covered instead by scutes, and others have no outer covering on part or all of the skin.
Fish scales are part of the fish's integumentary system, and are produced from the mesoderm layer of the dermis, which distinguishes them from reptile scales. The same genes involved in tooth and hair development in mammals are also involved in scale development. The placoid scales of cartilaginous fishes are also called dermal denticles and are structurally homologous with vertebrate teeth. Most fish are also covered in a layer of mucus or slime which can protect against pathogens such as bacteria, fungi, and viruses, and reduce surface resistance when the fish swims.

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  1. K

    change my scalemaster magnetic scale inhibitor.

    I need to change my scalemaster magnetic scale inhibitor as it is leaking but I cannot work out how to take it off! I ordered a new one the same so I could see how it's fitted but have received a completely different one!! Help please
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  2. B

    Add electronic or magnetic descaler to an existing electrolytic one?

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  3. R

    Replace Magnetic Scale Inhibitor

    My magnetic scale inhibitor is coming to the end of its 10 year life and needs replacing. This is attached to the pipework just before the combi boiler. I have a few questions that I'm hoping someone will be able to answer. Should I replace it with another magnetic inhibitor or change it to a...
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  4. O

    Loss off water pressure after mains scale inhibitor fitted

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  5. BWTUK

    BWT - Nice to meet you!

    Dear members of Plumbersforums, We are BWT UK, and as some of you may already know, we are a water treatment solutions manufacturer for domestic, business and commercial environments. Nice to meet you! There are so many awesome installers on this forum that we think it’s important to create a...
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  6. T

    Scale inhibitor furry bits

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  7. T

    Inline scale inhibitor.

    Have been asked what I would recommend for a inline scale inhibitor? Not really my specialist subject area & would be interested to know for my own information too. Thanks all.
  8. N

    Scalemaster Magnetic Scale Inhibitor

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  9. T

    Electronic scale inhibitor

    Installing an electronic scale inhibitor, done plenty of in-line ones but the question I have is with the electronic ones can I wrap the wires around the hot cylinder outlet or can it only go on cold feeds? Thanks in advance.
  10. P

    PowerFlush and Salamander SESI scale inhibitor

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  11. S

    Aqua scale inhibitor on cylinder cold fed?

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  12. H

    Inline scale inhibitor

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  13. F

    advice please on Permutit Scale inhibitor

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    • F_P_H
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  14. A

    scale inhibitor?

    What is the preference out there on either the inline magnetic or electrolytic scale inihibitors? Would you guys recommend differently if it was for whole house protection as opposed to just boiler protection? Lets assume London so hard water. cheers
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  15. E

    Scale Inhibitor Fitting

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