--- title: ASI Standards Blog description: Sulfur calibrations, calibration standards, analytical services, metals in oil, lube oil, crude oil, polymers, Statistical quality control, SQC, FuelSQC, control charting, ASTM D6299, D6299 --- [![ASI Standards](https://info.asistandards.com/hubfs/Asistandards_March2018/Images/ASIStandards_blk-2.png)](https://www.asistandards.com/) - [Calibration Standards](https://www.asistandards.com) - [Sulfur Standards](https://www.asistandards.com/sulfur-standards/) - [Chlorine and Sulfur Standards](https://www.asistandards.com/chlorine-and-sulfur-standards/) - [Nitrogen and Sulfur Ampules](https://www.asistandards.com/sulfur-and-nitrogen-ampules/) - [Sulfur and Metals in Oil](https://www.asistandards.com/sulfur-and-metals-in-oil/) - [Lead Standards](https://www.asistandards.com/lead-calibration-standards/) - [Lead in Gasoline and Isooctane](https://www.asistandards.com/lead-in-gasoline/) - [Lead Standards in Paint Coatings on Polyester Film](https://www.asistandards.com/lead-in-paint-standards/) - [Biodiesel Standards](https://www.asistandards.com/biodiesel-standards/) - [Stabilized Organometallic Solutions](https://www.asistandards.com/stabilized-organometallic-solutions/) - [Lubricating Oil Standards](https://www.asistandards.com/lubricating-oil/) - [Vanadium and Nickel Standards](https://www.asistandards.com/vanadium-and-nickel-standards/) - [PVC RoHS Standards](https://www.asistandards.com/rohs-standards-2/) - [EPA Standards](https://www.asistandards.com/epa-standards/) - [Titration Standards](https://www.asistandards.com/titration-standards/) - [Consumables](https://www.asistandards.com/consumables/) - [Shop](https://shop.asistandards.com/) - [Contact ASI](https://www.asistandards.com/contact/) - [About](https://www.asistandards.com/about/) - [ASI Blog](https://info.asistandards.com/blog/) - [Resources](https://www.asistandards.com/resources/) - [Product Search](https://shop.asistandards.com/search?type=product&q=) # Blog Sharing our best and latest insights for reference standards to the petroleum, crude oil, lube oil, and polymers industries. Sign up for email updates on ASI Standards! October 3, 2025 ## [Understanding Sulfur Testing: Essential Guide for Oil and Gas Compliance](https://info.asistandards.com/blog/understanding-sulfur-testing-essential-guide-for-oil-and-gas-compliance) ### Explore the critical role of sulfur testing in ensuring compliance and operational efficiency in the oil and gas industry #### The Importance of Sulfur Testing in Oil and Gas In the... October 2, 2025 ## [Mastering Control Charting for Laboratory Quality Management](https://info.asistandards.com/blog/mastering-control-charting-for-laboratory-quality-management) ## Introduction to Control Charting in Petroleum Testing Laboratories September 15, 2025 ## [Certified Reference Materials vs Reference Materials: Essential Guide for Labs](https://info.asistandards.com/blog/certified-vs-reference-materials-essential-guide-for-labs) ### Understand the Critical Distinctions Between Certified and Reference Materials to Ensure Your Laboratory Maintains High Standards and Compliance In the world of laboratory... September 11, 2025 ## [Check Standards vs Calibration Standards: Essential Differences](https://info.asistandards.com/blog/check-standards-vs-calibration-standards-essential-differences) ### Unlock the Critical Distinctions Between Check Standards and Calibration Standards to Ensure Compliance and Enhance Laboratory Performance #### Why Understanding Standards Matters... February 23, 2025 ## [How to Ensure Precise Organic Chloride Measurements in Crude Oil and Naphtha with ISO 17034 CRMs](https://info.asistandards.com/blog/monitoring-chlorine-in-crude-and-naphtha-with-iso-17034-crms) **Cutting Refinery Costs: Leveraging ISO 17034-Certified CRMs for Accurate Chlorine Analysis in Petroleum Products** December 21, 2024 ## [Drive Results with ISO 17034 Certified Reference Materials](https://info.asistandards.com/blog/drive-results-with-iso-17034-certified-reference-materials) **Achieving Superior Analytical Results and Cost Savings with ISO 17034 Certified Reference Materials** July 19, 2022 ## [What is Matrix Matching and How is it Affecting Your Results?](https://info.asistandards.com/blog/what-is-matrix-matching-and-how-is-it-affecting-your-results) The objective of calibration is to obtain a valid relationship between the signal produced by the analyte and the quantity of analyte in the standards used for calibration. ASI... April 26, 2022 ## [What to Know About Sulfur in Crude Oil Standards](https://info.asistandards.com/blog/sulfur-in-crude-oil-standards-asi-standards) August 17, 2021 ## [How and Why to Certify the Purity of Your Lubricants for Electric Vehicles](https://info.asistandards.com/blog/serving-the-lubricant-industry-through-new-carbon-emissions-regulations) As the world transitions from combustion engines to electric vehicles, the lubricant industry will provide fluids dedicated for this new technology. June 18, 2021 ## [Why You Need RoHS Polyvinyl Chloride Calibration Standards](https://info.asistandards.com/blog/rohs-polyvinyl-chloride-calibration-standards) - - [![footer-logo](https://info.asistandards.com/hubfs/footer-logo.png)](https://cdn.shopify.com/s/files/1/2355/9845/files/ISO-17034-Certificate-Scope-2020.pdf?v=1647709122) ANAB Registration Certificate No AR-2640. 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