Why Dip Slides and Laboratory Bacteria Testing May Not Agree

Diving into How These Tests Differ

  • 27 February 2018
  • Author: Allan Browning
  • Number of views: 5452
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Why Dip Slides and Laboratory Bacteria Testing May Not Agree

Dip slides and laboratory plate counts are both used to monitor total aerobic bacteria levels in cooling water systems. However, the results sometimes don’t agree. This invariably raises the question “Which one’s right?”  The answer may be “Both.” To understand why dip slides and laboratory bacteria testing can give different, equally valid results requires a deeper dive into what these tests actually measure, and the factors that influence the results.

Protecting Off-Line Cooling Water Equipment

Best Practices to Prevent Corrosion

  • 20 February 2018
  • Author: Chem-Aqua, Inc
  • Number of views: 4070
  • 0 Comments
Protecting Off-Line Cooling Water Equipment

 

Periodically, it is necessary to take cooling systems offline due to seasonal cycles, maintenance, lead-lag configurations, etc.  An offline cooling system can experience a multitude of problems, though, including microbiological growth and corrosion.  This can lead to reduced equipment life, increased operational and utility costs, and increased maintenance costs.

 

Facility managers are faced with the unappealing options of wasting money, needlessly running a system or repairing a system that sits unprotected too long.  Luckily, there are options available to mitigate these concerns and problems.

Off-Line Boiler Corrosion Protection Options

Seven Ways to Prevent Damage

  • 6 February 2018
  • Author: Chem-Aqua, Inc
  • Number of views: 4649
  • 0 Comments
Off-Line Boiler Corrosion Protection Options

When a boiler is shut down and removed from service, oxygen intrusion occurs as the boiler cools. This dissolved oxygen can cause a rapid pitting attack and metal failure. The potential for oxygen corrosion is particularly high in multiple boiler systems where the boilers are rotated or left off-line for extended periods of time. Unless very high levels of oxygen scavenger are present and the boiler water remains well mixed while off-line, severe corrosion can occur.

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