For Marine Monitoring
For most sea, the salinity is between 30‰~35‰. So this refractometer is ideal for simple marine monitoring and research.
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For Aquariums Water Monitoring
Ideal for aquariums or marine fishkeeping amateurs, cause they just need to make the salinity of water similar to the sea water.
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For Swimming Pool Water Measuring
If you use a salt chlorine machine to disinfect your pool, you should make sure the salinity right first, normally the salinity should be between 3‰~7‰, this refractometer can help.
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For Lab or Indurstry Purposes
Ideal for lab and industry use for testing salinity solution in the range of 0~100‰.
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