These Portable Refractometers are specifically designed for testing the refractive index of solution. Especially, it is an idea testing tool for cutting oil.
Specification:
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Range
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Resolution
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Accuracy
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1.3330—1.3848ND
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Not specified
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+/-0.0002ND
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ATC Compensation Range: From 10’C to 30’C (50’F to 86’F)