The Orion Outer Filling Solution d/j Reference Electrode 90-00-03 is a medical and lab equipment product designed for precision in reference electrode measurements. This product, with a capacity of 59mL and a quantity of 3, is manufactured by the trusted brand Orion and follows the model number 900003. Ideal for use in healthcare, lab, and dental settings, this filling solution provides accurate results for various industrial and professional applications requiring precise measurements.