CoralVue 28ppt Salinity Calibration Fluid, 250mL

CoralVue 28ppt Low-Range Salinity Calibration Fluid

Maintaining exact water chemistry is critical for the survival of marine organisms, and the CoralVue 28ppt Salinity Calibration Fluid (SKU: CV-SCS28) provides the laboratory-grade precision required to keep your testing equipment calibrated. While standard coral reef aquariums are kept at 35ppt (1.026 Specific Gravity), quarantine systems and hospital tanks are frequently maintained at a much lower salinity level. Known as hyposalinity therapy, keeping water at or near 28ppt is a highly effective, medication-free method to alleviate osmotic stress on recovering fish and suppress hazardous external parasites.

Because testing instruments like optical refractometers and digital conductivity probes can drift over time due to temperature changes and residual salt build-up, regular calibration is essential. This 250mL bottle of 28ppt fluid is formulated as a pure sodium chloride solution that exactly mimics the refractive index and electrical conductivity of 28ppt seawater. By calibrating your testing gear to this lower range standard, you ensure that diagnostic readings on your quarantine and therapeutic systems are accurate, eliminating the guesswork that can lead to salinity shock.

Why Choose a 28ppt Calibration Standard?

When measuring water that is far from your calibration point, testing instruments can exhibit "scale slope error"—meaning a probe calibrated at 35ppt may read slightly inaccurately when dipping down to therapeutic levels. Using CV-SCS28 allows you to calibrate your device closer to your target operating range, yielding highly precise and reliable data when managing specialized environments.

Note: This retail SKU contains (1) 250mL bottle of CoralVue 28ppt Salinity Calibration Fluid. Testing instruments, refractometers, and storage pipettes are sold separately.

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