The LK87 pulse oximeter is a medical device that measures oxygen saturation in arterial blood. It shows the average amount of oxygen associated with each hemoglobin molecule, as well as the pulse rate and infusion index. It is a modern diagnostic device easy to use even at home. _Website not available. Sign in: https://www.twine.net/signup_…The LK87 pulse oximeter is a medical device that measures oxygen saturation in arterial blood. It shows the average amount of oxygen associated with each hemoglobin molecule, as well as the pulse rate and infusion index. It is a modern diagnostic device easy to use even at home. _Website not available. Sign in: https://www.twine.net/signup_WWWW…