Description
Bluelab Replacement Pump Cassette Small Medium PUMPCASS SM COM 300L ) Refractometer Light Source yellow SP6 GR double junction ORP probe Built to last with ) Refractometer Light Source yellow LED Refractometer Temperature Compensation automatic between 10 and 40°C (50 to 104°F) Minimum Sample Volume 100 μL (to cover prism totally) Sample Cell stainless steel ring and flint glass prism Measurement Time approximately 1 saltwater aquariums and good preparation