Paragon Scientific’s ISO 17025 & ISO 17034 Acid Number (AN) Standards are specifically manufactured for the verification of analytical instruments used to determine acid number by potentiometric titration. Each standard is certified in strict accordance with international test method protocols, ASTM D664 / IP 177. Manufacture and certification is carried out in strict accordance with Paragon Scientific’s dual UKAS accreditations to ISO 17025 & ISO 17034. This dual accreditation allows us to ensure the highest level of accreditation guarantee and provides the most credible certified data available worldwide.

• Acid Number (TAN) tested and certified in accordance with ASTM D664 / IP 177
• Certified in strict accordance to ISO 17025 and ISO 17034 under our UKAS accreditation
• Highest level of accreditation guarantee, providing the most credible certified data available worldwide
• Fully traceable to international standards and low levels of uncertainty achieves maximum accuracy of data
• Typically used in, but not limited to, the analysis of used oils and lubricants
• Supplied as single volume packs or as triple packs
• Supplied in tamper-evident glass packaging, providing assurance of sample integrity
• Manufactured in the United Kingdom
• 24 month shelf life