One versatile unit for the serum protein concentration, urine specific gravity, and refractive index. No-touch, hands-free operations. (DOpen the daylight plate and apply a sample liquid ©Close the daylight plate Refractive Index Urine specific gravity ©Read the boundary line white colors meet. Measurement Range Minimum Scale Size & Weight About Scale This instrument has been designed to use the refractive index method for measuring total protein in serum. The protein scale has been prepared after extensive clinical analyses under taken by Dr. Matsumura, Professor of Bio chemistry at the Tokyo Women's Medical College. His scale is based on the results obtained from over 1400 cases. The scale is the most reliable one at present available. As the same as serum protein, there is a correlation between refractive index by a refractometer and urine specific gravity by a hydrometer. Urine specific gravity can be taken from refractive index. Measurement range of this unit is 1.000 to 1.050. All ATAGO refractometers are designed and manufactured in Japan. ATAGO products comply with HACCP, nn ■ Headquarters: The Front Tower Shiba Koen, 23rd Floor 2-6-3 Shiba Koen, Minato-ku, Tokyo 105-0011, CO., LF LJ. Japan TEL : 81 -3-3431-1943 FAX: 81 -3-3431-1945 overseas @atago.net http : //www.atago.net/