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Old 06-05-2006, 10:49 AM
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Bartman Bartman is offline
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Location: Langley, BC
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Make sure the refractometer on eBay is for measuring salinity and not for sugar or some other substance. I got this unit for about $37 USD:

http://cgi.ebay.ca/NEW-Salinity-Refr...QQcmdZViewItem
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