Refined Products Sampling
Precision sampling for gasoline, diesel, and jet fuel —
engineered to deliver true, representative results across every batch.
Accurate sampling of refined petroleum products is critical for maintaining product quality, ensuring regulatory compliance, and protecting custody transfer value. Welker’s refined products sampling systems are engineered to deliver true, representative samples — capturing the complete profile of your product, from head to tail of the batch.
With over hundreds of years of experience and hundreds of installations worldwide, Welker is the trusted authority in refined products sampling.
The Importance of Representative Sampling in Refined Products
At the end of the refining process — when fuels are stored, blended, or transferred — small sampling errors can create big consequences. Differences in product density, vapor pressure, or blending ratios can affect both compliance and valuation.
Welker’s refined products sampling systems are designed to:
- Ensure accurate composition analysis in line with ASTM D4177 and ISO 3171
- Reduce contamination and vapor loss for consistent, repeatable results
- Support both custody transfer and quality control applications
Refined Products Sampling Equipment
From sample extraction to containment, Welker’s refined products line covers every step of the sampling process.
Each system is engineered for precision, reliability, and long-term performance in fuel applications such as gasoline, diesel, jet fuel, and biofuels.
Composite Sampler
The inFlow™ Lite delivers dependable, automatic sampling for lighter refined hydrocarbons. Compact and easy to maintain, it provides repeatable grab samples directly from the line — without vapor loss or bias.
- Ideal for gasoline, diesel, and aviation fuel applications
- Maintains consistent sample volume across variable pressures
- Lightweight, corrosion-resistant construction
- Compliant with ASTM D4177 requirements
Containers
For atmospheric sample collection, Boston Round Bottles provide a simple, effective option. These amber glass bottles are compatible with refined product sampling practices and are typically available in sizes such as 1-quart and 1-gallon to support compliance and representativness in laboratory testing.
Refined Products Expertise You Can Trust
From refineries to terminals and testing laboratories, Welker’s refined products sampling systems are trusted across the globe for their proven accuracy, reliability, and engineering excellence.
With years of experience and ISO 9001:2015 certification, we design, build, and support every system in-house — ensuring unmatched quality and performance for your refined product sampling applications.
Get the Representative Sample Your Business Depends On
Welker has set the standard in sampling technology for refined petroleum products. From refineries to terminals, our systems are built to deliver the accuracy, safety, and durability your operation depends on.