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The Digital Hand-Held Urine Specific Gravity "Pen" Refractometer PEN-URINE S.G. utilizes the refractive index method to measure the specific gravity of urine. The PEN type refractometer is extremely easy to use. There are 2 ways to measure the sample : Dip the tip into the sample and press the START key OR press the START key and touch the tip into the sample.
Range: Urine S. G. : 1.0000 to 1.0600
Resolution: 0.0001
Accuracy: ±0.0010
Temperature compensation: 10 to 40°C
Power Supply: 1 × AAA Batteries
