ASTM D1533 for water in insulating liquids by Coulometric KF Titration
ASTM D1533 standard test method water in insulating liquids by Coulometric Karl Fischer Titration
8. Safety Precautions
8.1 Pyridine was the organic amine that was traditionally used in Karl Fischer reagents; however, pyridine-free formulations are now available commercially. Pyridine-free reagents titrate faster and are less toxic, less odorous, and more stable than pyridine types. The reagents may contain potentially hazardous chemicals, such as iodine, pyridine, sulfur dioxide, methanol, chloroform, chlorinated hydrocarbons, or other organic materials. Wear chemical resistant gloves when mixing the reagents and removing solution from the titration chamber. Care must be exercised to avoid unnecessary inhalation of reagent vapors or direct contact of the reagents with the skin or eyes. Following accidental spillage, flush the affected area with copious amounts of water.

NOTE 2 - Carefully read and follow manufacturers instructions and Material Safety Data Sheet when using commercially available reagent systems.