Bút đo TDS HINOTEK TDSscan20 (0 - 10.00, 100.0, 1000ppm, 10.00, 20.00ppt)

Bút đo TDS HINOTEK TDSscan20 (0 - 10.00, 100.0, 1000ppm, 10.00, 20.00ppt)