"The MAGNUM_MEDIA SOFT CASE, CLINICAL REFRACTOMETER" is a Triple Scale, professional Clinical Refractometer for the measuring of Urine Specific Gravity, Urine Refractive Index and Blood Serum Protein. Ideal for testing Animals and peoples hydration through the Urine Specific Gravity readings. Veterinarians can use the unit for testing the hydration of all sorts of animals - from small to big. Of note, there is a more accurate Refractometer for measuring Cats and Dogs - please look for our "Cat and Dog Refractometer" through Amazon. Parole Officers can use this unit for on the spot testing of basic hydration which can be helpful for drug testing. Comes in a soft case with a calibration screwdriver, pipette, and users guide. Calibrate with distilled water as water will equal 0g/dl, 1.000 Urine SG and 1.330 Urine RI. Comes with a 5 year warranty against manufacturers defects. NO ONE ELSE IN THE WORLD HAS THIS UNIT! IF YOU SEE ANOTHER SELLER SELLING IT, IT IS A FAKE! PLEASE REPORT THEM TO AMAZON AND TO US FOR PROSECUTION! ONLY MAGNUM MEDIA sells this unit! The other sellers are selling fakes and should be reported to AMAZON and us! BRAND NEW! Many in stock! USA stock for rapid shipment! Blood Serum Protein: 0-12g/dl, Urine Specific Gravity: 1.000-1.050sg, Urine Refractive Index: 1.330RI-1.360RI Min.Divisions/Accuracy: Blood Serum Protein: 0.2g/dl Urine Specific Gravity: 0.005sg, Urine Refractive Index: 0.0005RI This unit measures hydration of pets and people! Solid Construction - 5 year warranty against defects - Economy version of our other unit found on Amazon The unit has Automatic Temperature Compensation ("ATC") and comes with a case, calibration screwdriver, pipette and users guide Additional Details ------------------------------ Package quantity: 1