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About product and suppliers:
        Alibaba.com offers 3,597 portable refractometer products. About 77% of these are refractometers, 14% are other optics instruments, and 1% are testing equipment. 

A wide variety of portable refractometer options are available to you, such as electronic, hydraulic. You can also choose from free samples, paid samples. 

There are 3,656 portable refractometer suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 98%, 1%, and 1% of portable refractometer respectively. 

Portable refractometer products are most popular in Western Europe, Southern Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 583 with ISO9001, 328 with ISO13485, and 178 with Other certification.