1. Nytro® 4000X. 2021. Product Data Sheet. Nynas.
2. IEC 62021-1. 2004. Insulating Liquids—Determination of acidity—Part 1: Automatic Potentiometric Titration.
3. IEC 62021-2. 2008. Insulating Liquids—Determination of Acidity—Part 2: Colourimetric Titration.
4. ISO 14596. 2007. Petroleum Products—Determination of Sulfur Content—Wavelength-Dispersive X-Ray Fluorescence Spectrometry.
5. NYTRO® BIO 300X. 2019. Product Data Sheet. Nynas.