This kit is for testing the bacteria and pH levels of metal cutting fluids.
1 x GNAT Dipslide Incubator (1 -2 dipslide capacity)
2 x boxes of Bacteria & Yeast / Mould testing dipslides (Nutrient and Malt Extract Agar), 20 dipslides in total.
1 x box of Johnson Universal pH indicator strips (0 - 14)
Testing the pH of metal cutting fluid can indicate whether levels are corrosive. Low pH levels can be caused by the presence of bacteria. This is why using dipslides and pH strips together gives a fuller indication of the 'health' and quality of your cutting fluid.
Ideally, you do not want your cutting fluid to have a lower pH than approx 8.5 as any fluid that is too acidic will corrode metals. However, you don't want a pH level that is too high as it can pose a risk to health (skin irritation etc).
When you carefully dip the indicator strip into fluid, the strip will change colour in accordance with its pH level. These indicator strips are colour fixed and non-bleeding so results should be clear and accurate.
Each box of pH indicator strips contain 100 strips. A colour indicator chart is also included.
The Nutrient and Malt Extract Agar (BTM2) dipslides test the cutting fluid for bacteria and yeasts / moulds. Regular microbiological testing of metal cutting fluids is very important. High levels of bacterial contamination will degrade the quality of the fluid and will become a health risk. Contamination can also cause the pH level to lower to acidic levels.
There are 2 boxes of dipslides in this kit (20 dipslides) . To test your metal cutting fluid using these dipslides, carefully dip the slide within the fluid and immerse fully then replace the slide within its tube. You will then need to incubate the slides and once incubated, compare results with the comparison chart provided to evaluate if contamination is present.
The GNAT incubator will incubate 1 - 2 dipslides. It is ready to use after an initial 15-20 minute stabilisation period. The incubator is pre-set at 30 degrees Celcius.
This kit will provide everything you need to effectively test the microbiology and pH of your metal cutting fluids.
|Nutrient Side||Nutrient Side||Nutrient Side||Nutrient Side||Nutrient Side||Nutrient Side|
|Level of infection||102||103||104||105||106||107|
|Approx colonies per agar||≅2||≅12||≅60||≅200||≅500||≅600+|
|HSE.gov.uk advice||Good control. Bacteria are being maintained at low levels. No further action is required.||Reasonable control. Review control measures to ensure levels of bacteria remain under control. Risk assessment should specify action to be taken. Biocides and or cleaning may be indicated. If biocides are used, expert advice should be obtained, and the concentration of biocides should be monitored||Poor control. Immediate action should be taken in line with the risk assessment. Normally at very high levels draining and cleaning, should take place.|
You can find our Premium Metal Cutting Fluid Kit here: Premium Metal Cutting Fluid Bacteria & pH Tester Kit