Diesel Testing Services and Fuel Quality Analysis

Providing ISO/IEC 17025 accredited Diesel Testing Services for Ultra-Low Sulfur Diesel (ULSD), marine gas oil, and backup power fuel reliability.

Quality Assurance for Ultra-Low Sulfur Diesel (ULSD)

AGT Labs provides professional Diesel Testing Services to verify the combustion performance, cleanliness, and regulatory compliance of diesel fuel stocks. Our Houston facility specializes in high-resolution analytical profiling, performing sulfur speciation, cetane index calculation, and microbial contamination checks to ensure your fuel meets ASTM D975 and EPA ULSD standards.

Our Diesel Testing Services support transport fleets, backup power facilities, and marine operators with accredited technical data. Whether verifying long-term storage stability for emergency generators or ensuring lubricity compliance for modern high-pressure common rail engines, we offer the precise results needed to prevent injector failure and costly downtime.

Value for Stakeholders: Fleet Managers verifying fuel lubricity through our Diesel Testing Services, Power Plants ensuring generator readiness, and Marine Operators confirming sulfur emission compliance.

Accredited Diesel Testing Services Highlights

  • High-Resolution Sulfur Speciation (ASTM D5623)
  • Visual Haze & Water Content (ASTM D4176)
  • Calculated Cetane Index (ASTM D976/D4737)
  • Electrical Conductivity (ASTM D2624)
  • Kinematic Viscosity & Density Profiling (ASTM D445 / D5002)
  • Copper Strip Corrosion Influence (ASTM D130)
  • Cloud Point & Pour Point Analysis
  • Microbial Contamination Screening

Key Technical Parameters

Accredited analysis supporting our Diesel Testing Services suite for industrial and transport energy standards.

Sulfur Speciation
ASTM D5623
Visual Appearance
ASTM D4176
Conductivity
ASTM D2624
Kin. Viscosity
ASTM D445
Copper Corrosion
ASTM D130
API Gravity
ASTM D5002
Refractive Index
ASTM D1218
Acidity / Acid Value
ASTM D1613
Nonvolatile Matter
ASTM D1353
Water Content
ASTM D6304
Flash Point
ASTM D93
Color ASTM
ASTM D1500

Industries We Serve

Providing specialized fuel quality data across the industrial and transport sectors utilizing our Diesel Testing Services.

Transport Fleets

Monitoring fuel lubricity and cetane levels to optimize combustion efficiency and protect modern engine injectors.

Backup Power Gen

Accredited storage stability testing to ensure emergency generators start reliably during critical grid outages.

Marine & Offshore

Verifying Marine Gas Oil (MGO) sulfur limits for ECA compliance and ensuring fuel cleanliness for vessel engines.

Fuel Distributors

Independent verification of bulk fuel deliveries to prevent cross-contamination and ensuring ASTM D975 compliance.

Construction & Mining

Identifying water and particulate contamination in field storage tanks to prevent heavy equipment downtime.

Environmental Compliance

Analytical support for ULSD verification and validating sulfur content for regulatory reporting.

Laboratory Capabilities

Analytical Systems

Our Diesel Testing Services utilize high-sensitivity GC-SCD for sulfur profiling, automated digital density meters, and viscosity baths. We are equipped with Karl Fischer titration for precise moisture detection and microbial growth screening tools.

Advanced Technical Support

  • ISO/IEC 17025:2017 Accredited Laboratory Operations
  • Rapid Turnaround for Emergency Power Fuel Readiness
  • Flexible Scope for Bio-Diesel Blend Verification
  • Root-Cause Analysis for Filter Plugging Issues
Analytical lab instruments for diesel testing services

Sampling, Handling & Chain of Custody

Reliable Diesel Testing Services depend on maintaining sample integrity, especially preventing water ingress and microbial contamination. We provide specialized technical sampling kits and clean containers with a completed CoC.

Download Chain of Custody Form

Containers & Handling

  • Use certified clean containers; opaque bottles recommended to prevent light degradation.
  • Take bottom, middle, and top samples from storage tanks to detect stratified water or sludge.
  • Seal immediately to prevent external moisture or dust contamination.

Transport & Logistics

  • Include accurate records of sampling location (tank bottom vs. nozzle) for technical interpretation.
  • Expedited shipping to our Houston laboratory for urgent generator fuel checks.
  • Samples stored in a cool environment per technical safety compliance standards.

Quality & Reporting

Reports from our Diesel Testing Services provide technical clarity for engine warranties and regulatory audit compliance.

  • ✓ COA with method references, results, and certified authorized signatory.
  • ✓ Secure PDF Delivery via automated client technical portal.
  • ✓ Measurement uncertainty data for critical sulfur spec limits.
  • ✓ Consultation for off-spec flash point or water remediation.

Standards & Accreditation

AGT Labs is ISO/IEC 17025 accredited. We perform Diesel Testing Services strictly adhering to ASTM D975 and international trade methodologies.

ASTM D975
ASTM D5623
ASTM D4176
ASTM D2624
ISO/IEC 17025
ASTM D6304

Ensuring fuel performance through traceable Diesel Testing Services data.

Frequently Asked Questions

Why is sulfur testing (ASTM D5623) critical for diesel?
EPA regulations mandate Ultra-Low Sulfur Diesel (ULSD) to have less than 15 ppm sulfur. In our Diesel Testing Services, ASTM D5623 provides high-precision verification to prevent emission control system damage and regulatory fines.
Can you detect microbial growth in stored fuel?
Yes, through our Diesel Testing Services, we offer screening for bacteria and fungi ("diesel bug"). Early detection is vital for preventing filter plugging and tank corrosion in backup generators and storage tanks.
How fast can I get diesel purity results?
Routine analysis via our Diesel Testing Services is typically delivered within 24 to 48 hours. We offer expedited rush support for Houston-area critical power and marine fueling operations.
What indicates poor long-term storage stability?
High water content (ASTM D6304), presence of particulates (ASTM D4176), and increased acidity (ASTM D1613) are key indicators of fuel degradation. Our Diesel Testing Services monitor these trends to recommend timely fuel polishing.

Certify Your Fuel Reliability with Diesel Testing Services

Need reliable accredited Diesel Testing Services for Houston operations? Contact our Houston technical team today for a custom analysis quote.

Contact Technical Specialist
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