Fluid Testing Services (UK)

Contaminated fuel or degraded oil can shut down critical systems without warning. At P&I Group, we test thousands of samples every year to keep hospitals, utilities,and data centres running, giving you the confidence your equipment will perform when it matters most.

4-Hour Engineer Dispatch*

365 Days a Year

24 Hours a Day

Accurate, Reliable Fluid Analysis


Contaminated or degraded fluids can cause breakdowns, damage equipment, and increase costs. Our fluid testing services give you the insight needed to protect your assets, extend fluid life, and ensure compliance.

From fuel and oil testing to coolant, hydraulic, and thermal fluid analysis, we provide laboratory-grade testing across the UK with fast results and clear reports.

Contaminated or degraded fluids can cause breakdowns, damage equipment, and increase costs. Our fluid testing services give you the insight needed to protect your assets, extend fluid life, and ensure compliance.

From fuel and oil testing to coolant, hydraulic, and thermal fluid analysis, we provide laboratory-grade testing across the UK with fast results and clear reports.

Why Choose P&I Group for Fluid Testing


UK-Wide Service – On-site sampling and nationwide coverage.

Multi-Fluid Expertise – Fuel, oil, lubricants, coolant, hydraulic, thermal and more.

Accredited & Trusted – Testing carried out in line with SFG20 maintenance standards, with clear compliance reports for audit and assurance.

Actionable Results – Clear, easy-to-understand reports with recommendations.

Industry Specialists – Supporting healthcare, data centres, marine, utilities, manufacturing, and more.

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Our Fluid Testing Services

Fuel Testing & Analysis

Stored fuel degrades over time, leading to sludge, water, and microbial contamination. We provide:

  • Fuel sampling and testing service
  • Microbial contamination testing (also known as diesel bug detection)
  • Fuel contamination removal advice
  • Post-polishing quality testing

Oil & Lubricant Analysis

Regular oil analysis identifies early signs of wear, contamination, or breakdown. Our service includes:

  • Lubricant oil testing
  • Viscosity, contamination, and additive checks
  • Condition monitoring reports

Hydraulic Fluid Testing

Hydraulic systems depend on clean, stable fluid. Our testing covers:

  • Hydraulic oil analysis
  • Particle counts & water
  • Degradation and wear checks

Thermal & Heat Transfer Fluid Testing

Thermal oil testing prevents dangerous system failures. We test for:

  • Oxidation and thermal degradation
  • Carbon build-up and sludge
  • Flash point and compliance monitoring

Metalworking Fluid Testing

Used across engineering and manufacturing, metalworking fluid analysis ensures safety and performance. We check:

  • Bacterial growth & stability
  • pH and concentration
  • Health & safety compliance

We have found P & I to be very helpful from design concept through to delivery and commissioning of projects. We will continue to use P & I, our 1st choice supplier of generators and UPS solutions.


James Carter,
Project Manager,
DH Group

Click on the brochure to download!

A complete overview of our services, accreditations, and commitment to uninterrupted power.
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Cyber Essentials Plus
AMPS
Achilles UVDB
Safe Contractor
CQS 14001
Oftec
Constructionline Gold
CHAS
CQS 18001
PPC
Riello Service Partner
NICEIC
Supply Chain sustainability school
ISO 9001

Benefits of Regular Fluid Testing


  • Prevent equipment failures before they happen.

  • Reduce maintenance costs and downtime.

  • Comply with UK health, safety, and insurance standards

  • Extend the lifespan of fluids and equipment

  • Receive professional reports to support audits and compliance.

Testimonials


We have found P & I to be very helpful from design concept through to delivery and commissioning of projects. We will continue to use P & I, our 1st choice supplier of generators and UPS solutions.


James Carter
Project Manager, 
DH Group

Very pro-active, when dates are moved, they seemed to do all they could to reposition to meet the streamlined targets, which were achieved. Seemed to conduct themselves in a very professional manner, which made our lives a lot easier, all the way from RAMS to O&M. All in all, very pleased with P & I and look forward to working together in the near future. I would recommend them to neighbouring companies.


Ben Jennings
Electrical Director, 
Logistical Building Services Ltd

P & I are a highly efficient and professional company of whom we have worked closely with for many years.


Lee Norman
Compliance Manager, 
Rapid Response Solutions Ltd

A very professional and well-organised company. The installation itself is outstanding with great communication throughout. Would highly recommend to anyone.


Greg Cheshire
Quadrant Court

Book a Fluid Testing Service Today


Protect your equipment, comply with standards, and avoid costly downtime.

Call us today: 02392 783450
Email: info@pandigroup.co.uk

P&I Group – trusted nationwide for fluid testing services.

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