CIBJO releases Gemmological Special Report: considers process of separating measurable facts from opinion; See Gemological Articles below.
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 Post subject: Cheap Refractometer on Ebay from China
PostPosted: Fri Jun 14, 2019 1:20 pm 
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Any one have experiance of buying a cheap refractometer with built in light source off ebay from a Chinese supplier. The item is about 65 Euros.
I have and old Rayner ractometer and thought may be time to upgrade it as the new modles come with built in light source. I am casting around if any one has experiance of this kind of kit from a cheap source ( like China ).
Some items i have bought from this sorce are fine some I have sent stright back.
I am intrested in your thoughts and experiances .


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 Post subject: Re: Cheap Refractometer on Ebay from China
PostPosted: Fri Jun 14, 2019 5:59 pm 
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I have had a few. All perfectly adequate for basic measurements but they definitely won't be an upgrade on a quality refractometer like a rayner.

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 Post subject: Re: Cheap Refractometer on Ebay from China
PostPosted: Fri Jun 14, 2019 7:45 pm 
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I find they work fine for the easy work. Where they fail is spot readings, and Birefringence.


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 Post subject: Re: Cheap Refractometer on Ebay from China
PostPosted: Sat Jun 22, 2019 8:09 am 
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I have one and it is ok for field.
I think chinese refractometers have the "window glass" softer than professional, anyway is cheaper to buy a new one Chinese toy than replace the hemicylinder.


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 Post subject: Re: Cheap Refractometer on Ebay from China
PostPosted: Mon Jul 08, 2019 9:38 am 
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Thanks for the comments .
After the comments about how good Raner refractometers are i descided to get a seperate sodium light source and keep the old instrument. A very large sodium ight source has just arrived . Switched on the light and no line on the Rayner. So looks like I will be buying new one after all .


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