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 Post subject: Gem A refractometer
PostPosted: Mon Apr 06, 2020 7:04 pm 
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Joined: Tue Apr 17, 2012 1:39 pm
Posts: 20
Good day to all

Please help me , i have gem-a refractometer with built-in monochromatic filter , kindly inform with this i can use normal white light torch or i need to use a sodium filter or sodium light source ?

thank you in anticipation

Irfan


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 Post subject: Re: Gem A refractometer
PostPosted: Mon Apr 06, 2020 7:10 pm 
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The filter turns white light into monochromatic light, that is its purpose.


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 Post subject: Re: Gem A refractometer
PostPosted: Tue Apr 07, 2020 1:22 pm 
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Location: San Francisco
I own this refractometer. As 1bwana1 pointed out, it comes with a built in sodium filter. You can back it up to your polariscope if you have one with a front light source.


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