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.
[Urine S.G]
Patent for Design Registration No. ZL200830008615.4 (China), D127363 (Taiwan)
Patent pending in all other countries around the world.
More Info:
https://www.atago.net/product/?l=en&f=products-pen-top.php#ADU60009