Titration Standards
ASI has created an easy, trustworthy, no-hassle way to find and acquire the standards you need for the definitive testing of acid number, base number, bromine index, and bromine number.
Quick Shipping
Most sulfur sets ship in 1-2 days. Custom standards with 10-day lead times.
Quality Assurance
Our lab has ISO 17034 and ISO 9001 certifications. Every bottle is tested in ASI's state of the art in-house laboratory. All orders come with traceable Certificate of Analysis and GHS compliant SDS.
Guaranteed Products
Quality guaranteed or
we replace
it at no cost.