IntelliCALⓇ MTC301 is a digital combination oxidation reduction potential (ORP/RedOx) electrode with built-in temperature sensor. The MTC301 has a refillable with a ceramic pin reference junction. The laboratory version of this metallic electrode is shockproof with its epoxy plastic body protecting down to the platinum sensing element. The Electrode is available with a 3 or 1 m cable. The MTC301 electrode is ideal for measuring ORP/RedOx absolute mV values in wastewater, drinking water and aqueous media applications. The MTC101 is not suitable for use with organic solvents. A 59 mL bottle of reference electrolyte filling solution (3M KCl solution saturated with AgCl) is included with the probe.
* Provides fast, stable response in a variety of applications
| Accuracy | ±0.02 mV or 0.05%, whichever is greater |
| Cable Length | 1 m (3.28 ft) |
| Electrode Type | Refillable Reference Element |
| Filling Solution | 3 M KCl solution saturated with AgCl (#2841700) |
| Junction | Porous Pin Junction |
| Kit? | No |
| Length | 175 mm (6.89 in.) |
| Method Type | Laboratory: Refillable Reference Element |
| Parameter | ORP |
| Probe Type | Standard |
| Product Kit | Model: MTC301 Accessories Included: None |
| Range | ±1200 mV |
| Reference Type | Ag/AgCl |
| Resolution | ±0.1 mV |
| Sample depth | 20 mm (0.79 in.) |
| Sensor material | Epoxy |
| Sensor Type | Platinum disc |
| Special Features | Flat disc sensor for easy cleaning. |
| Temperature Accuracy | ±0.3 °C (±0.54 °F) |
| Temperature Range | 0 - 80 °C (32 - 176 °F) |
| Temperature Resolution | 0.1 °C (0.18 °F) |
| Test requirements | Parameter Needed: ORP Minimum Sample Depth (mm): 20 |
| Thermistor | ATC |
| Weight | 0.1 kg |
| What's included? | IntelliCAL MTC301 Laboratory ORP/RedOx electrode with storage soaker bottle, 1 m cable, 59-mL bottle reference electrolyte filling solution 3M KCl with saturated AgCl solution), Test certificate, and Basic User Manual. |

