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Database: 365,228(8 Aug 2026)

Polytheophylline

Polytheophylline, Total:34 items.

The international standard classification for "Polytheophylline" includes: Tea .

The Chinese standard classification for "Polytheophylline" includes: Tea products , Basic standards and general methods .


Professional Standard - Agriculture

中华全国供销合作总社

  • GH/T 1260-2019 Method for Moisture,Total Polyphenols and Caffeine in Instant Tea in Solid Form -Near infrared reflectance spectroscopy
  • GH/T 1259-2019 Method for moisture,total polyphenols and caffeine in tea polyphenol products-Near infrared reflectance spectroscopy

Professional Standard - Supply and Marketing Cooperative

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

农业农村部

  • NY/T 3631-2020 Determination of theobromine and theophylline in tea—High performance-liquid chromatography

American Society for Testing and Materials (ASTM)

  • ASTM D6437-05 Standard Test Method for Polyurethane Raw Materials: alkalinity in Low-Alkalinity Polyols (Determination of CPR values of Polyols)
  • ASTM D6437-05(2016)e1 Standard Test Method for Polyurethane Raw Materials: Alkalinity in Low-Alkalinity Polyols (Determination of CPR Values of Polyols)
  • ASTM D6437-22 Standard Test Method for Polyurethane Raw Materials: Alkalinity in Low-Alkalinity Polyols (Determination of CPR Values of Polyols)
  • ASTM D6437-05(2010)e1 Standard Test Method for Polyurethane Raw Materials: alkalinity in Low-Alkalinity Polyols (Determination of CPR values of Polyols)

International Organization for Standardization (ISO)

  • ISO 14899:2001 Plastics - Polyols for use in the production of polyurethane - Determination of basicity
  • ISO 14899:2022 Plastics — Polyols for use in the production of polyurethanes — Determination of basicity

GSO

  • OS GSO ISO 14899:2015 Plastics -- Polyols for use in the production of polyurethane -- Determination of basicity
  • GSO ISO 14899:2015 Plastics -- Polyols for use in the production of polyurethane -- Determination of basicity

RU-GOST R

  • GOST 34364-2017 Plastics. Polyols for polyurethanes. Determination of basicity on nitrogen