The Refractometer is a must have for all hobbyists. The proper salinity is crucial for the survival and health of your fish and corals. This high quality refractometer is extremely accurate and easy to use and calibrate. Calibrat...
Specifically designed for aquarium use for measuring the salinity of Natural Sea Water. Almost all hand held salt water refractometers available to the hobby are designed and calibrated for testing of brine solution, i.e. sodium c...
The Captive Purity Refractometer is an incredibly accurate and easy to use device that eliminates the confusion associated with inexpensive hydrometers. Just place a couple of drops of water on the prism and hold to the light. Rea...
The re-designed deep six hydrometer with improved calibration and bubble diffuser ensures more accurate readings of your aquarium salt levels. Also includes a built in base so you can rest the hydrometer on a counter top or other ...
The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing for a much more precise evaluation. Each scale is temperature compensated. 1...
Instant Ocean Hydrometer`s new improved design delivers precise full-range salinity and specific gravity readings - accurate to 0.001 - every time. Easy-fill convenience keeps hands dry when filling. It has a durable, permanent ne...
Hagen Living Sea Hydrometer with Thermometer—Small 20cm (8") Accurate Easy to read Thermometer—C & F
Unique intergrated hydrometer and thermometer. Provides accurate measurement of specific gravity (degree of salinity) in a saltwater aquarium. Patented design enables device to be permanently installed inside aquarium, allowing ti...
Designed for Research Grade Analysis HANNA‘s HI 96822 Digital Refractometer is a rugged portable, water resistant device that utilizes the measurement of the refractive index to determine the salinity of natural and artificial ...
Milwaukee Protective Hardshell Case for Milwaukee Refractometers and Photometers
Milwaukee Seawater Digital Refractometer with Protective Hardshell Case The new Milwaukee MA887 Seawater Digital Refractometer encompasses 3 different types of user selected scales for the measurement of seawater providing ...