Starter pen meters are the choice for basic testing needs of the total ionic concentration within a solution.<br><br>● pH range: 0.00 - 14.00 pH<br>● Resolution: 0.01pH<br>● Accuracy: 0.05 pH<br>● Dimension: 185x42x37 mm<br>● Ambient temperature: 0~50 C(32-122F)<br>● Materials: ABS