It is designed for testing the concentration of salt water and brine and used for quality control in research and clinical laboratories and marine industry. Its scale provides a direct reading of the specific gravity and concentration (part per Thousand)...

Main features of Red Sea’s Seawater Refractometer include:Directly reads the absolutesalinity ofseawaterat25°C/77 0F ( No need for seawater or temperature compensation factors)Specifically designed for the ionic content of seawater (NSW) for...

Refractometer & Hydrometer Calibration Standard 1.0264 Specific Gravity 1.3394 Refractive Index 35 ppt Salinity 53 uS/cm at 25 deg c Overview Brightwell Aquatics Aquarium Reagents Refractometer & Hydrometer Calibration Standard is...

Introducing the NEW GLASS Small-In-One! This 1 Gallon Desktop Aquarium is the perfect companion for your home or office - available for Saltwater or Freshwater! Tailored towards beginners and experts alike, the PNW Custom Glass Small-In-One does not...

Introducing the NEW GLASS Small-In-One! This 1 Gallon Desktop Aquarium is the perfect companion for your home or office - available for Saltwater or Freshwater! Tailored towards beginners and experts alike, the PNW Custom Glass Small-In-One does not...

Introducing the NEW GLASS Small-In-One XL! This 5 Gallon Desktop Aquarium is the perfect companion for your home or office! Tailored towards the beginner who wants to get started in the saltwater hobby and full-blown experts alike, the PNW Custom Glass...