Red Sea
Red Sea Seawater Refractometer
$123Out of stock · backorder
Ships Australia-wideOut of stock
Dry goods ship Australia-wide with fast dispatch from Eastwood — or collect in store with the rest of your order.
SKU 4594578
SKU 4594578
Available to backorder
Out of stock in-store — order now and we'll bring it in for you, ready to ship (or collect) when it arrives. Paid securely at checkout; we'll email you with timing once it's on order.
Added as a backorder
- Ships Australia-wide — fast dispatch from Eastwood
- Or collect in store with the rest of your order
- Genuine stock — marine specialists since 2012
Overview
The Red Sea Seawater Refractometer is a precision optical instrument used to measure salinity, one of the most fundamental parameters in a marine or reef tank.
Getting salinity right — and keeping it consistent — matters more than almost any other single parameter, and a quality refractometer gives you a far more accurate reading than a hydrometer ever can.
Key features
- Optical refractometer purpose-built for seawater salinity measurement
- More accurate and repeatable than swing-arm hydrometers
- Compact, durable design for regular use at the tank or during water changes
Who it's for
Any reef or marine fish-only keeper who wants accurate, reliable salinity readings — an essential tool regardless of tank size.
Setup & tips
- Calibrate with RO/DI water (reading zero) before first use, and recheck periodically
- Clean the prism and lid after every use to avoid dried salt affecting future readings
- Take readings at a consistent temperature for the most accurate result
- Recalibrate if the unit is dropped or hasn't been used for a while
