Portable and Handheld Bacteria Monitoring
October 1, 2008
The ATP method for testing surfaces and bulk water for microbial activity, microbial levels and fouling rates is a key method in the food industry for more than 30 years. It is commonly used by the larger service companies in the industrial process and cooling water industry. ATP is used in a wide variety of applications such as cooling towers, oil-field-produced water, re-injection water, chill loops, hot loops, ornamental pools and spas.
Now, ATP testing is simple and cost effective using the AMSALite III ATP Analyzer. The AMSALite III hand-held unit is the ideal compliment to traditional bacterial counting methods such as dipslides and Petrifilm. Easy-to-use and simple to read, the AMSALite III produces results in just 30 seconds.
What Is ATP?
ATP is a chemical found in all plant and animal cells. It is produced when the cell is involved in some activity. Its level is similar to the pulse rate or number of heartbeats in a living human being. ATP levels measured periodically over several hours can tell you when to add biocide. Knowing the rate of bacterial growth will allow you to determine how often to treat, how much to add, and for how long to add. No wasted chemicals. No guessing when to call the service company. The service company will know how to prevent a problem before it occurs. ATP is proactive and predictive. It is a tool for both the customer and the service provider.
What Types of Units Are Available?
There are two technologies: PMT (photomultiplier) and PD (photodiode). PD units cost much less than PMT units. PD units are 600 to 800 times less sensitive than PMT units. The cost difference is in the electronic method and design used. (The motor scooter vs. the automobile) PD units are not recommended for industrial water treatment.
SEE US AT AWT 2008 IN BOOTHS 417/419