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For Marine Monitoring

For most sea, the salinty is between 30‰~35‰. So this refractometer is ideal for simple marine monitoring and research.

For Lab or Indurstry Purposes

Ideal for lab and indurstry use for testing salinity solution in the range of 0~100‰.

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.

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.