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About product and suppliers:
        Alibaba.com offers 1,193 portable handheld refractometer products. About 59% of these are refractometers, 35% are other optics instruments. 

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

There are 1,210 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, Mid East, and Eastern Asia. 

You can ensure product safety by selecting from certified suppliers, including 75 with ISO9001, 30 with Other, and 23 with ISO13485 certification.