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Chilled\LPHW Water Systems

Closed Circuits

Most closed circuits are used to conduct heat either to warm up a process or property or to cool it down such as in refrigeration/air conditioning.

The water in these systems is susceptible to microbiological contamination, scale & corrosion and any one of these can cause efficiency to drop.

When it comes to bacteria, there are some such as Pseudomonas which form a slime which can block heat exchangers. Whilst others, such as Sulphate and Nitrite reducers cause chemical reactions in the water which encourage corrosion.

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Advice on Taking the Sample

When taking a sample from a drain point, thoroughly clean and sanitise it first.

Next, flush a few litres to waster before filling the sample bottle.