?The electrode is composed by the pH glass electrode and silver silver chloride reference electrode. It is the measuring element of pH meter£¬ using to measure the pH of aqueous solution/water.<br><br><strong>Features:</strong><br>Widely used to test the the pH of aqueous solution/water.<br>100% brand new pH electrode probe.<br>Great laboratory pH electrode probe.<br>Suitable for most pH meter and controller with BNC connector.<br>Apply in water sources£¬ aquarium£¬ hydroponics£¬ laboratory£¬ spas£¬ swimming pools and other water systems.<br><br><strong>Specifications:</strong><br>Type: Laboratory Electrode?<br>Display: Digital Display<br>Probe Type: Sensitive Crystal Ball Bubble<br>Range: 0.00 ¡« 14.00pH<br>Accuracy: 0.01<br>Power Voltage: 5V<br>Temperature Range: 0 ¡« 80¡æ<br>Zero-point: 7¡À0.5(pH-201) / 7x¡À0.5(pH-151) (Optional)<br>Color: Blue(pH-201) / Black(pH-151)<br>Material: Polycarbonate<br>Type of Electrode Plug: Q9?<br>BNC: Upright<br>Length of pH Electrode Line: Approx. 70cm / 27.5in?<br>Item Size:?<br>pH-201: Approx. 145 * 20 * 20mm / 5.7 * 0.8 * 0.8in (pH Electrode)<br>pH-151: Approx. 155 * 20 * 20mm / 6.1 * 0.8 * 0.8in (pH Electrode)<br>Item Weight:?<br>pH-201: Approx. 44.7g / 1.6oz<br>pH-151: Approx. 47.3g / 1.7oz<br>Package Size: Approx. 21 * 10.4 * 5cm / 8.3 * 4.1 * 1.9in<br>Package Weight:?<br>pH-201: Approx. 85g / 3.0oz<br>pH-151: Approx. 94.3g / 3.3oz<br><br><strong>Note:?</strong><br>The difference between pH-201 and pH-151 is the Filling Liguid.<br>The pH-201 Electrode comes without the Filling Liguid.<br>The pH-151 Electrode comes with the Filling Liguid.<br><br><strong>Package List:</strong><br>1 * pH Electrode<br>1 * Filling Liguid (ONLY pH-151)