November 14-17th 2012
Aqua-tools will be present at MEDICA exhibition in Düsseldorf from 14th to 17th November 2012. Meet us on stand number 7AE 26I at UBI France department. We are looking for distributors in various countries for our terminal filtration activity !
Study “Prevention of water-related risks in healthcare establishments in la Reunion”
Read the article
L’EAU, L’INDUSTRIE, LES NUISANCES – n°346 « Monitoring the biological quality of drinking water in the distribution networks – Studies of 4 municipalities in Poland » Read the article.
HYGIENES 2011 – Volume XIX – n°6
« Prevention of risks from water in healthcare settings in La Réunion » J.-C.Denys Read the article.
Metalworking fluids are used for three main goals in metallurgical industry:
Aqueous metalworking fluids are liquids made up of oil and water. This combination is favorable for development of microorganisms. Indeed, source of microorganisms may be water, oil, parts and materials or contamination by workers.
are favorable for a quick microbial growth.
A non-controlled proliferation of microorganisms have the following impacts:
According to IRSST, concentration of microorganisms in metalworking fluids can reach 1 000 000 000 CFU/mL. This number underestimates the total amount of microorganisms because not all the species grow up on culture media. These microorganisms are bacteria (mainly Pseudomonas and Legionella but also Salmonella and Staphylococcus), molds (mainly Fusarium) and yeasts (mainly Candida).
Which infection risks for workers?
Studies show number of microorganisms in air, through aerosolization of metalworking fluids, is proportional to the concentration of microorganisms in fluids. Some occupational diseases among operators have been diagnosed (hypersensitivity pneumopathies, asthma, bronchitis, Pontiac fevers) where contamination of metalworking fluids has been detected. Generally, a very high total concentration of bacteria increases infections risk for workers.
So, metalworking fluids are microbiological risk sources for workers contamination. It is necessary to protect them. Get a sterile cutting fluid is illusory because microorganisms are always present but the first step is to control this source of microorganisms
The most commonly used method for microbial measurement in metalworking fluids is culture, but is not adapted to problems encountered on the field. Heterotrophic plate count requires several days to results. Culture tests only measure culturable organisms (depending on the type of media being used). As a consequence, CFU/mL counts are generally only 0.1-1% of the total microorganism count in a sample while ATP testing accounts for all cells (culturable and non culturable). So, reactivity required for microbial risk control is not possible with laboratory analysis methods.
Using kits of 2nd generation ATP-metry, measuring total flora in samples in only few minutes is now possible. Quench-Gone™ Organic Modified test kit (QGO-M™) enables quantification of microorganisms through intracellular ATP quantification. Intracellular ATP is an indicator of active biomass. Every living cell contains ATP - aerobic or anaerobic bacteria, yeasts, molds, etc.
This technic brings reactivity required in industry. Indeed, to fight against microbial risk, the two main techniques used today are the addition of biocide and fungicide in metalworking fluids and the disinfection of circuits, machines and tanks.
So, how to check quickly operations efficiency?
Using QGO-M kit, disinfections check by a control, before and after operations, is now possible. Using ATP-metry technology, use of disinfectant can be adapted and optimized. Thus, sustainable savings are executable.
Furthermore, using QGO-M kit, efficiency of biocides and fungicide added to metalworking fluids can be controlled directly and in only few minutes. Decrease of microorganisms concentration needs a reasonable use of biocides in metalworking fluids. QGO-M test kit allows adapting the use concentration of disinfectants and controlling total flora during biocides substitutions.
Using QGO-M test kit, it is now possible to quantify in only few minutes and on-field all living microorganisms (yeasts, molds and bacteria) in any metalworking fluid. QGO-M test kit offers a possibility to measure the true total living flora present in the sample. An appropriate treatment can be quickly implemented.
Using QGO-M test kit, it is possible to define the origin of microorganisms growth and set up adapted solutions.
Origin of microbial drift may be:
To conclude, QGO-M kit allows analyzing and controlling total flora contaminating metalworking fluids.