ANALYTICAL AND LABORATORY EQUIPMENT 17
vary depending on the detergent itself, the soil, the substrate, the temperature and the cleaning method.
When comparing different
cleaning products, a cleaner that appears to be more costly on the surface may indeed be the more economical choice in the long run if a lower concentration of detergent is needed for each cleaning cycle. Follow the manufacturer’s guidelines for determining the correct strength of your cleaning solution.
Establish the proper cleaning temperature Te optimal cleaning temperature can vary greatly depending on the aforementioned variables: soil, substrate, cleaning method, concentration of detergent and choice of detergent. In the majority of instances increasing the temperature is one of the best ways to speed up or improve the cleaning action.
121 x 185mm
Check with the manufacturer for the maximum suggested operating temperature for your detergent.
Establish the length of the cleaning cycle Time is an important variable in setting up your critical cleaning protocol. In most instances, increasing the dwell time will improve the results. It’s important to consider all of the variables – dwell time, temperature of the cleaning solution, concentration of detergent, type of cleaning action, type of water used – to arrive at the most efficient cleaning regime for each unique application.
Include a rinsing step A thorough rinsing step should follow the cleaning. Rinsing removes any excess detergent left on the item. For critical cleaning applications it is best to use deionised or distilled water, as rinsing with ordinary
water may introduce new contaminates. A potable water rinse is recommended for food contact surfaces. A simple method of testing for residue is to dip a glass slide into the rinse water and remove it. If the rinse water flows smoothly over the slide, there is no residue. If the water beads or streaks, further rinsing is required. Quantitative validation methods, available from most manufacturers, should be used for critical cleaning applications. Developing the proper
cleaning process for each application helps to ensure your system runs smoothly and efficiently. A ‘one size fits all’ approach is not the best way to attack your cleaning challenges. Time spent planning at the outset results in more efficient, streamlined and economical processes in the long run.
For more information ✔ at
www.scientistlive.com/eurolab
Judy Shapiro is with International Products Corporation (IPCOL).
www.ipcol.com
For more information ✔ at
www.scientistlive.com/eurolab
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