Regularly testing the water quality in your saltwater aquarium is crucial for the well-being of your fish and coral.

Sper Scientific 300006 Salt Refractometer 0 ~ 28%. Measures salt content in sea water and pickling-brines. If calibrated for sodium chloride, it can be used for calcium chloride, barium cobalt ...

The Thermo Scientific HM 325 Manual Rotary Microtome is a robust instrument that doesn't need a power supply to provide high-quality paraffin sections. The HM 325 features retraction at the return ...

Designed as a research quality instrument the Rudolph J357 Automatic Digital Refractometer offers one of the highest measurement ranges of any instrument in the Rudolph refractometer product line.