What Is Mercaptobenzothiazole (MBT)?
Mercaptobenzothiazole, commonly referred to as MBT, is an organic compound widely used as a corrosion inhibitor in industrial water systems. MBT forms a protective film on metal surfaces, especially copper and copper alloys, helping prevent pitting, oxidation, and premature equipment failure.
MBT is frequently used in:
- Closed‑loop cooling systems
- Industrial process water
- Boiler and condensate systems
- Metalworking fluids
Because MBT plays a critical role in corrosion control, maintaining the correct concentration is essential for system protection and long‑term performance.
Why Test for MBT?
Monitoring MBT levels ensures that corrosion‑inhibitor programs are functioning effectively. Both under‑ and over‑dosing can create operational challenges.
- Corrosion prevention: Insufficient MBT leaves metal surfaces vulnerable to attack.
- Chemical optimization: Excess MBT wastes chemical and may interfere with other treatment additives.
- System reliability: Stable MBT levels help maintain heat‑transfer efficiency and equipment longevity.
- Regulatory and environmental considerations: Some facilities track MBT to ensure proper discharge management.
Routine MBT testing helps operators maintain balanced water chemistry and avoid costly corrosion‑related failures.
Our Mercaptobenzothiazole (MBT) Test Kit
CHEMetrics offers a dedicated MBT test kit designed for fast, accurate measurement of MBT in industrial water systems.
CHEMets® Visual MBT Test Kit
This visual test kit provides a straightforward, field‑ready method for determining MBT concentration.
- Self‑filling ampoules with pre‑measured reagents
- Rapid color development for quick interpretation
- Results compared against a calibrated color comparator
- Ideal for cooling‑tower operators, water‑treatment professionals, and routine system monitoring
Instrumental Testing Options
For facilities requiring digital documentation or enhanced precision, MBT can also be measured using Vacu‑vials® ampoules with compatible photometers or spectrophotometers.
- 13‑mm self‑filling ampoules
- Suitable for low‑level and mid‑range MBT analysis
- Supports laboratory workflows and compliance reporting
Browse Our Test Kits
All CHEMetrics MBT test kits, along with a full range of water‑quality testing supplies, are available through the AquaPhoenix Scientific eStore.