- ASTM D7995 measures moisture in light hydrocarbons at the ppm level.
- Only 12 instruments nationwide can perform this test—SPL’s Williston lab has two.
- Lab Manager Nick Warnke shares how this capability supports refineries, midstream operators, and ethanol blenders.
- Moisture control prevents freeze-outs, operational failures, and costly downtime.
Moisture in your NGLs? Here’s the rare test that can find it – and quantify it.
When it comes to specialty hydrocarbon testing, ASTM D7995 is a method that stands apart. This procedure uses a Karl Fischer Gas Analyzer to quantify trace levels of water in light hydrocarbons, reported in parts per million. While it may sound niche, the ability to measure moisture at such precision can mean the difference between smooth operations and costly disruptions.
At SPL’s Williston, ND laboratory, the team is uniquely equipped to deliver this rare service. Only 12 of the required instruments exist in the U.S.—and SPL owns two of them.
“ASTM D7995 isn’t something every lab can offer,” explains Nick Warnke, Lab Manager in Williston. “Metrohm stopped producing the exact model listed in the method, so access is limited. That’s why clients across the hydrocarbon industry turn to us.”
Why Moisture Matters in Hydrocarbons
Excess water in hydrocarbons can cause operational failures, safety risks, and compliance issues. For ethanol blending, for example, moisture must remain below 1% to meet regulatory standards. In colder climates, even small amounts of water can freeze, clogging valves and pipelines.
Nick has seen firsthand how proactive testing makes a difference.
“One of the most practical scenarios is what we call a ‘freeze valve test,’” he notes. “Producers add propane and monitor for freeze-out. If the water content isn’t controlled, it can shut down operations fast. ASTM D7995 gives us the data to help clients prevent that.”
Serving Critical Industry Needs
The Williston lab works closely with hydrocarbon producers, midstream operators, and refineries who rely on accurate, defensible data. With two Karl Fischer Gas Analyzers on site, SPL not only provides reliability but also resilience—ensuring clients aren’t left waiting if one instrument goes offline.
“These instruments are rare, and getting parts can be a challenge,” Nick adds. “That’s why we invested in two. Clients trust that when they send samples to SPL, we’ll deliver results without delays.”
A Rare Capability, Backed by Experience
With a lab team trained in advanced methods like ASTM D7995, the Williston location has become a trusted partner for hydrocarbon testing in the region and beyond.
“Our mission is always to provide accurate, timely data,” Nick emphasizes. “ASTM D7995 is just one example of how SPL invests in rare, specialized methods so our clients can operate with confidence.”
When it comes to moisture in your NGLs, indicator tests can miss what matters. SPL delivers precise ppm results so you can prove quality, meet spec, and protect your bottom line.
Trusted by leading midstream producers, SPL’s water content testing ensures your NGLs meet spec, get accepted, and keep moving.
📞 +1.713.660.0901 | 🌐 www.spllabs.com | 📧 info@spllabs.com
