Because the stand is made with brushed stainless steel

gel filled electrode

Compensation Features:

The large LCD with plant-friendly green backlighting displays all three measurements simultaneously

Milwaukee MA887 Digital Seawater Refractometer CAREKITPHCON Because the stand is madeThousands of saltwater aquarium enthusiasts have dialed in the analysis with Milwaukee's salinity refractometer. No more visual readings. Get a digital readout within seconds accurate to 2 ppt with automatic temperature compensation (ATC). WHAT PEOPLE ARE SAYING "This is a terrific addition and you'll want a digital refractometer if you spend any time at all with saltwater aquariums. Highly recommended." "This is a must for any even remotely serious