Waterproof Digital Refractometer - Salinity trays 75" and an outside diameter

75" and an outside diameter of

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Durable Vortex ImpellerBuilt to resist clogging and wear from debris and sandy water

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The Fan Heat Shield blocks the heat generated by inline duct fans from radiating off of them

Waterproof Digital Refractometer - Salinity trays 75" and an outside diameterHoused in a protective Rubberized IP65 waterproof case to safeguard the electronics from wet environments and makes for easy clean UPS. Measure samples as small as 1 ml, in the field with laboratory accuracy. Sample temperature is initially displayed on the large LCD followed by the measurement results. The sophisticated microprocessor provides automatic calibration, automatic temperature compensation and automatic shutoff (after 3 minutes). Features