Closed System Protection Bundle Nitrite

£422.00 exc. VAT

Corroban 40 25kg
Biocide ITA 10kg
(Liquid chemicals)

Nitrite Comparator Kit
(Conical flask & Measuring Cylinder separate)

Safety Data Sheet emailed upon order.

For business and contractors use only.
Product unsuitable for public & domestic usage.

Description and usage instructions below.


Buy 5-10 drums, receive a 10% discount
Buy more than 11 drums, receive a 15% discount

Closed system protection inhibitor bundle

Corroban 40 25kg
Biocide ITA 10kg
(Liquid chemicals)

Nitirite Comparator Kit

Closed system inhibition & Protection

CORROBAN 40 is a nitrite-borate based corrosion inhibitor containing an additional organic inhibitor to protect steel, copper and other non-ferrous metals. As such CORROBAN 40 is an ideal treatment for closed chilled water and low pressure heating systems.

Corroban 40 is an extremely strong passivator of exposed or corroded metal surfaces.

CORROBAN 40 is NOT intended for use in systems containing Aluminium or galvanised pipework.

Dosage rate

5 – 7 litres / 1000 litres of system water and make-up

Normal treated water control limits

pH 8.5 – 10.5

Nitrite: 1200mg/l min.

TDS: 2500mg/l max.

TVC: 103 cfu/ml max.

How to use it

Corroban 40 should be added to the system at an initial dosage rate of 7 litres / 1000 litres of system water content. This will passivate metal and should establish the required minimum Nitrite reserve of 1200mg/l. Whenever the system is drained or loses a significant quantity of water then the additional Corroban 40 should be added at the rate of 5 – 7 litres / 1000 litres.

The active inhibitor reserve can be measured using the included nitrite closed system testkit.

Usage of Biocide

In order to control potentially problematic microbial contamination the system should be dosed initially with the included Biocide ITA at the rate of 200 – 500ml / 1000 litres, this should be repeated once every 3 months. The microbial activity (TVC) in the system can be monitored using microbial dipslides. (Not included)

It is generally recommended that new closed systems are pre-commission cleaned prior to adding a corrosion inhibitor – our product Corrosperse 84 is ideal for this and can also be used to restore heat transfer and flow to older systems. (Not included)

Chemical addition is made easier using a chemical dosing pot.


Corroban 40 – Nitrite based corrosion inhibitor

Biocide ITA  – Broad Spectrum Biocide.

Test Kits
Nitrite Comparator titration kit



Corrosperse 84 – Pre-commission cleaning chemical

Servicing options and contracts available

Take advantage of Feedwater’ servicing options and contracts when you buy our chemical products.

Advice for Choosing a Suitable Corrosion inhibitor

Additional information



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