* Model : ME-4 * Dimension : 120mm x 12mm (with 1.2m BNC connector) * Structure : polymer membrane, half-cell epoxy body * Range : 0.12 ~ 24,312 ppm * Temperature : 0 ~ 50¡É * Optimal pH : 5 ~ 11 * Interference : Ca+, Na+, K+ * Response time : 4 ~ 5 sec * Detection limit : 4.78 x 10 M