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Emerson Launches the PUR-Sense 3800 pH Sensor

Emerson Process Management has introduced a new pH sensor, which is autoclavable and uses steam sterilization to provide stability in life science applications. The Rosemount Analytical PUR-Sense3800 offers nearly five times more sensor stability compared to other available sensors. This helps pharmaceutical manufacturers by ensuring dependable measurements and less maintenance.

In a mock cell-culture process, after being autoclaved for 45 min at 125°C, the PUR-Sense 3800 showed a sensor drift  less than 0.1 pH and further testing exhibited an extended sensor life even after 30 plus autoclave cycles or 50 steam cycles. To guarantee maximum effectiveness of PUR-Sense in complex pharmaceutical applications, the company has worked hand in hand with its clients.

The VP of Emerson Process Management John Wright said that the company has created stability standards for the sensors and also has devised customized programs to suit individual needs.

The PUR-Sense 3800 owes its dependability and stability in high temperatures to the use of Emerson’s PERpH-X® and AccuGlass® technologies, which at high temperatures withstands from cracking and aging thus preventing the pH glass sensing membrane from deterioration. A silver-silver chloride-based reference electrode combined with an electrolyte made from a gel of potassium chloride provides a fixed reference potential via the sole ceramic reference junction.

This model is built in three insertion lengths, i.e., 120, 225 and 325 mm and also has a PT100 ohm RTD fixed within a pH glass stem. It is used for automatic temperature compensation. This model comes along with an individual quality certification for each sensor and has a list of wetted materials and calibration records.

Source: http://www.emerson.com

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