OT - what is the fluid in a MOVA globe?
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  1. #1
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    Default OT - what is the fluid in a MOVA globe?

    A search of the web provided nothing definitive - so here goes:

    MOVA Globes

    Innovative Rotating Globe Decor - MOVA Globes, A Unique Elegant Gift (not an endorsement, they are a bit overpriced and tend of have problems, but are cool while they last, and I got one as a gift)

    have a clear plastic shell, then a globe inside floating in some sort of clear liquid. Using light, and an arrangement of magnets, photo cells of some sorts and a bit of magic, the globes turn inside the shell.

    They are notorious for getting air bubbles in them. With a bubble, the globe is no longer suspended, and doesn't rotate.

    Easy enough to drill a small hole, and refill, but what is in there? The maker describes it as 'totally safe' and similar to charcoal lighter fluid. They say it is a 'proprietary fluid', but that is probably just marketing. They will sell a replacement globe, but not very cheap.

    So I am thinking it is a light paraffin / mineral oil of some sort. Any one know? Fluid density is critical, but since I need to top-up such a small volume, I think just making sure it is miscible and doesn't cloud is the biggest concern.

    Thanks in advance.

    Matt

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    Send a few drips out to someone with an FTIR? That should give you at least the basic composition.

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    Marine compass fluid might work. My recollection is it's something like mineral oil (but gin has worked in a pinch).

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    How does One get home using gin?

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    Quote Originally Posted by mark costello View Post
    How does One get home using gin?
    From one lamp post to another. ;-)

    Ed.

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    If the globe is from China,the fluid is very likely a PCB.....non flammable,and non conductive.

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    Maybe Stoddard solvent, which is water clear varsol. This is what was in my aircraft compass. I talked to the A & P mechanic at the airport when my compass leaked down. He said "get a cup full out of that 55 gallon drum over there, take out the plug on top of the compass & fill it". Problem solved.

    White spirit - Wikipedia

    Paul

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    Quote Originally Posted by paul39 View Post
    Maybe Stoddard solvent, which is water clear varsol. This is what was in my aircraft compass. I talked to the A & P mechanic at the airport when my compass leaked down. He said "get a cup full out of that 55 gallon drum over there, take out the plug on top of the compass & fill it". Problem solved.

    White spirit - Wikipedia

    Paul
    Airpath compasses are made here. George Cottrel, who started the company, told me that they used Stoddard's solvent. He also used it for cleaning fluid.

    Bill


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