Sper Scientific waterproof refractometers are rugged and ideal for field or lab use. Housed 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.
Waterproof Digital Refractometer Diesel Exhaust Fluid - 300065
Waterproof Digital Refractometer Salinity - 300062