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About product and suppliers:
        Alibaba.com offers 1,307 portable handheld refractometer products. About 67% of these are refractometers, 2% are ophthalmic optical equipments. 

A wide variety of portable handheld refractometer options are available to you, such as paid samples, free samples. 

There are 1,324 portable handheld refractometer suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Hong Kong, and Taiwan, which supply 98%, 1%, and 1% of portable handheld refractometer respectively. 

Portable handheld refractometer products are most popular in Western Europe, Eastern Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 43 with ISO9001, 17 with Other, and 5 with ISO13485 certification.