Item Description: NIC-500ATC Portable Clinical Refractometer - Urine Specific Gravity, Urine Refractive Index (nD) and Blood Serum Protein - FOR DOGS AND CATS ONLY! TAILORED TO DOGS AND CATS ONLY! BROAD URINE SG RANGE FOR DOGS AND CATS - 1.000-1.060! This is a High Quality unit made of durable Aluminum and comes with a 5 YEAR WARRANTY against defects! You don't get that from anyone else through! Buy smart, buy through NI Supply! NEW NIC-500ATC tri-scale portable Clinical Refractometer in a blue, foam-lined hard case. The NIC series of portable refractometers is designed to measure DOG/CAT Urine Specific Gravity AND Blood Plasma Serum Protein. One scale checks Blood Plasma Serum Protein with the range of 2-12 g/dl, another checks for DOG/CAT Urine Specific Gravity with a range of 1.000 to 1.060. Models with the ?ATC? suffix are equipped with ?Automatic Temperature Compensation? for accurate measurements without re-calibration after shifts in ambient working temperature (field use). DOG/CAT Urine Specific Gravity: * Range 1.00-1.060 SG * Minimum Division: 0.005 SG * Accuracy: +/1 0.005 SG Serum Protein: * Range: 2-12 g/dl * Minimum Division: 0.20 g/dl * Accuracy: +/1 0.20 g/d WHY VETERINARY SPECIFIC SCALES? GOOD QUESTION, RIGHT? Research published in 1956 by Rubini demonstrated that canine and feline specimens of exactly the same specific gravity (determined by direct methods) yielded different refractive indices. Rubini then postulated that canine and feline specimens of the same refractive index (measured by refractometry) would yield different specific gravity readings. This work demonstrated the greater refractivity of feline urine that would yield falsely elevated values when measured against human scales; especially with concentrated samples. George, Jeanne W. The Usefulness and Limitations of Hand-held Refractometers in Veterinary Laboratory Medicine in Veterinary Clinical Pathology. Vol 30, No 4 (December 2001) Included are: a pipette for dropping test fluids onto the prism (never dip the refractometer into the test fluid!), a mini screwdriver for scale calibration, and a Users Guide. This model sells for as much as $100.00 at most retailers, not including shipping. Get yours today at Wholesale prices! IMPORTANT! HIGH QUALITY! OURS ARE MADE OF STURDY ALUMINUM! A GOOD DEAL IS ONLY GOOD IF THE PRODUCT LASTS... AND THE SELLER IS STILL AROUND! THE AVERAGE SELLER IS GONE IN 6-18 MONTHS! WHAT DO YOU DO THEN? NO ONE HAD BEEN SELLING LONGER. NO ONE! Comes with a FIVE YEAR WARRANTY against manufacturers defects! No one else at does that! International Shipping: Air Mail/Global Priority: $15.00 S H to Canada via USPS Air Mail/Global Priority: $12.00 Questions? Larger Orders? Please feel free to call, fax or e-mail! TO RECAP: A Great Quality unit We've seen many other Sellers come and go... Experienced! Over 40,000 units sold! A 3 Year Warranty against defects FREE replacement parts - no matter where you live in the World! Customer Service - Call, fax or e-mail us. If we're not available, please leave a message so we can get back to you! Competitive Pricing Other Clinical Models and pH Meters at our Store: ----- Click here RHC-200ATC: General Duty, Calibration Screwdriver, and Aluminum Construction... RHCN-200ATC: Heavy Duty Version of the RHC-200ATC. This unit features an easy to calibrate knob, and extra ounce of aluminum for heft and protection, and a reinforced forward daylight plate ZGRC-200ATC: Heavy Duty Design Elements, Reinforced Daylight Plate, INTERNAL LIGHT, the SAME Dual Scale, Calibration Screwdriver, and Aluminum Construction too... This unit is for the Professionals! National Industrial Supply 30777 Rancho California #891420 Temecula, CA 92589, USA Sales: 951.308.9269 Fax: 310.833.7306 We prefer Paypal! Pay me securely with any major credit card through PayPal!