Premium Metal Cutting Fluid Bacteria & pH Tester Kit

  • Metal cutting fluid testing kit
  • Metal Cutting Dipslide user manual
  • Premium Metal Cutting Fluid Bacteria & pH Tester Kit
  • Metal cutting fluid dipslide test
  • Premium Metal Cutting Fluid Bacteria & pH Tester Kit
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Metal cutting fluid testing kit
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Include a Refractometer?: Want to upgrade your incubator?:

Premium Metal Cutting Fluid Kit with 8 dipslide capacity incubator, 2 boxes of dipslides and a digital dual pH and temperature tester. Option to also add a refractometer for MWF concentration testing.

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About Our premium metal cutting fluid bacteria & ph tester kit


Fully Comply with HSE MW5 on metal working fluid testing

This kit includes what you need to meet the weekly testing guidelines in the HSE MW5 documentation for MWF. These weekly tests include:

Dipslide tests (for bacteria, yeasts and moulds).

pH tests.

Temperature Tests.

Fluid Concentration tests (choose to add a refractometer to include this test).

Method to record all test results for any HSE inspection.

No training required - easy to follow step by step manual included.

Full colour photographic manual with record sheets - essential for recording your results & showing proof of your fluid quality monitoring.

Record sheets also indicate the recommended levels for each test which can help the user analyse whether their results are within HSE guidelines.

Each of the required tests is documented in detail with colour images of each step allowing anyone to perform the test without prior training.


What's included in the Metal Cutting Test Kit

Our Metal cutting test kits are trusted by thousands of companies all over the UK to comply with HSE MW5. Inside the kit, you will find :

Professional pre-configured incubator

By default, the kit comes with a professional 8 dipslide capacity incubator (to test up to up to 8 machines at once). No set up is required for this incubator. This can be upgraded to a 25 or 45 dipslide incubator (using the dropdown at the top of the page). This allows the kit to be customised to suit your company's needs.

The 8 slide incubator is pre-configured to the optimal temperature for MCBTM2 dipslides (30℃) and features a durable lid helping to retain the heat (resulting in minimal running costs).


MCBTM2 Dipslides

The Metal Cutting Fluid (MCBTM2) 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 MCBTM2 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.

Additional MCBTM2 dipslides can be purchased via our site.

DualTest Pro Tester & pH Buffer Solution

The waterproof, battery powered DualTest Pro Tester can quickly check and digitally display your MWF fluid's pH and Temperature. No separate tests are required since the device tests both at the same time. It has a full 0 to 14.0 pH range with auto calibration and a 0 to 50 °C (32 to 122 °F) temperature range.

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 a pH tester 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 (e.g. skin irritation).

In accordance with the MW5 HSE regulation, you are now required to monitor the temperature of your MWF. MWF Temperature will need to be tested weekly with your results recorded either via the included record manual or via our Excel record sheet (free with any purchase). The operating temperature will need to be monitored as higher temperatures (30 degrees C+) support the growth of bacteria, yeasts and moulds. Depending on the type of MWF you use, other factors can be affected by the temperature including fluid concentration, consistency and performance. You may wish to check with your MWF supplier as to what temperature range is appropriate for the specific fluid that you are using.


Refractometer 0–32% Brix (optional)

A Refractometer can be added to the kit if you wish to purchase one (these are not included by default as many companies already have one). A refractometer can be used to test the concentration of industrial / metal cutting fluids.

Testing the concentration is important as having a high or low concentration can contribute to adverse health effects, ineffective lubrication, machine breakages and bacterial contamination. It is also a requirement to comply with HSE MW5. Please choose from the dropdown if you would like to add a refractometer to your kit.

Rocol Testimonial

Reading the results

Nutrient Side

Level of infection in liquids







Approx colonies per agar






600+ advice

Good control. Bacteria are being maintained at low levels. Regular checks and actions to maintain the fluid quality should continue.

Reasonable control. Review and take action to check the quality of the metalworking fluid and adjust fluid parameters to those recommended by the supplier. If bacterial growth continues despite these adjustments, add biocide at the dose recommended by your supplier.

Poor control. Immediate action should be taken in line with the risk assessment. Normally draining and cleaning should take place

Example Image

102.jpg 103.jpg 104.jpg 105.jpg 106.jpg 107.jpg

Level of infection on surfaces

0.4 2.5 12 40 100 250

Malt Extract Side

Level of yeasts in liquids







Approx yeasts colonies per agar







Example Image

Yeast dipslide growth Yeast dipslide growth Yeast dipslide growth Yeast dipslide growth Yeast dipslide growth Yeast dipslide growth

Level of yeasts on surfaces







Malt Extract Side

Level of moulds




Example Image

Light mould growth on slide Medium mould growth on slide heavy mould growth on slide

Related UK & International Guidelines / Regulations

MW5 ('Managing sumps and bacterial contamination') -

Control of Substances Hazardous to Health Regulations as regulated by HSE 

ASTM E2693 -

Standard Practice for Prevention of Dermatitis in the Wet Metal Removal Fluid Environment

ASTM E2657 - 

Standard Practice for Determination of Endotoxin Concentrations in Water-Miscible Metalworking Fluids

ASTM E2275 -  

Standard Practice for Evaluating Water-Miscible Metalworking Fluid Bioresistance and Antimicrobial Pesticide Performance

ASTM E2169 -  

Standard Practice for Selecting Antimicrobial Pesticides for Use in Water-Miscible Metalworking Fluids

Customer Questions


We have been told that we need to test our machine cooling fluid to comply with HSE regulations. Is this kit OK for this?


Hello, Yes, this kit will test the bacteria levels to comply with HSE guidelines. As an added benefit, these dipslides will also check the yeasts and moulds levels to help you keep your fluid safe and your machinery working at optimal levels.


How often should the dip test be done on a machine as we do PH testing weekly but at present don't dip test.


Hello. We would recommend weekly tests . The HSE state the following:--- "For many systems and sumps, weekly checks (such as dipslides) will be required.". If you need any further help, please let us know.

Additional Details

Product Reference : PMCF-B-PH-K

Internal catalogue reference : DS001-88

Product external rating on

5.0 out of 5 based on 14 customer ratings


Download 52 Week Record Sheet  JPG

52 Week Record Sheet JPG
Record 52 weeks worth of bacteria / Yeasts / Moulds and pH tests in JPG format (quicker to open)

Download (1.11MB)
Download Malt Extract Comparison Chart

Malt Extract Comparison Chart
Malt Extract comparison chart in JPG format

Download (1.77MB)
Download 52 Week Record Sheet PDF

52 Week Record Sheet PDF
Record 52 weeks worth of bacteria / Yeasts / Moulds and pH tests in PDF format (may take a while to open fully)

Download (6.7MB)
Download MSDS

MSDS Sheet for Dipslides

Download (436.23KB)
Download MX8 Product Data Sheet

MX8 Product Data Sheet

Download (109.8KB)
Download Nutrient Comparison Chart

Nutrient Comparison Chart
Nutrient comparison chart in JPG format

Download (1.62MB)
Download Metal Cutting Datasheet

Metal Cutting Datasheet
Metal Cutting Dipslide Datasheet (PDF)

Download (1.75MB)

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