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Royal Bank of Scotland (RBS)

Royal Bank of Scotland’s Building No.250, the 18-year old bank office located in Bishopsgate, had corrosion-relating issues in its central heating water system for a pretty long period.
The bank stopped using corrosion inhibitors because they were cost-prohibitive and eco-unfriendly. Instead, the bank installed NMR Pipetector PT-200DS on March 23, 2018, as an alternative way to protect the piping from red rust corrosion.

RBS bldg. 250 in Bishopsgate, London

After three weeks, NMR Pipetector reduced the level of iron-ion to 0.41 ㎎/ℓ from 1.1 ㎎/ℓ as shown in a study conducted in the same conditions as before. It indicates NMR Pipetector stopped the new formation of internal corrosion and reduced the existing corrosion to magnetite, a substance that does not dissolve in water. After 11 months, NMR Pipetector maintained the iron level at 0.4 ㎎/ℓ as shown in another water testing. If being continuously used, NMR Pipetector will reduce the existing red rust to black rust and protect the inner surface of piping with the layers of magnetite, the process of which prolongs the lifespan of piping as long as the building exists.

The bank tested the water quality on May 7, 2019, as a one-year follow-up. As a result, the bank confirmed that NMR Pipetector further reduced the level to 0.03 ㎎/ℓ; the rust-prevention effect of NMR Pipetector was still effective after a year. The bank, being delighted, bestowed NMR Pipetector a positive testimonial following this successful survey.

Installed NMR Pipetector
Installed NMR Pipetector


NameThe Royal Bank of Scotland No. 250 Bishopsgate
LocationBishopsgate, London, UK
ProfileAn 18-year-old bank building with 11 floors
Installation dateMarch 23, 2018
Installation pipeCentral heating pipework system, PT-200DS x 1

Change in iron contents in the water

Before InstallationAfter 2 weeksAfter 4 weeksAfter 5 weeksAfter 6 weeksAfter 7 weeksAfter 9 weeksAfter a year
1.10 ㎎/ℓ1.30 ㎎/ℓ1.10 ㎎/ℓ0.88 ㎎/ℓ0.41 ㎎/ℓ0.51 ㎎/ℓ0.39 ㎎/ℓ0.03 ㎎/ℓ
Analysis institute Chemtest Ltd.

Iron-ion contents dropped drastically from 1.1㎎/ℓ before installation to 0.03㎎/ℓ after a year of installation.

Client testimonial