资质认证
- ISO 5523:1981
- Liquid fruit and vegetable products — Determination of sulphur dioxide content (Routine method)
- 1981-07-31
- ISO 5520:1981
- Fruits, vegetables and derived products — Determination of alkalinity of total ash and of water-soluble ash
- 1981-07-31
- ISO 6882:1981
- Asparagus — Guide to refrigerated transport
- 1981-07-31
- ISO 865:1981
- Slots in platens for projection welding machines
- 1981-07-31
- ISO 6706:1981
- Plastics laboratory ware — Graduated measuring cylinders
- 1981-06-30
- ISO 6725:1981
- Road vehicles — Dimensions of two-wheeled mopeds and motorcycles — Terms and definitions
- 1981-06-30
- ISO 3419:1981
- Non-alloy and alloy steel butt-welding fittings
- 1981-06-30
- ISO 3952-2:1981
- Kinematic diagrams — Graphical symbols
- 1981-06-30
- ISO 6659:1981
- Sweet pepper — Guide to refrigerated storage and transport
- 1981-06-30
- ISO 4082:1981
- Road vehicles — Motor vehicles — Flasher units
- 1981-06-30
- ISO 5691:1981
- Equipment for planting — Potato planters — Method of testing
- 1981-06-30
- ISO 5051:1981
- Continuous mechanical handling equipment — Deep elevator bucket with flat rear wall — Main dimensions
- 1981-06-30
- ISO/TR 7468:1981
- Summary of average stress rupture properties of wrought steels for boilers and pressure vessels
- 1981-05-31
- ISO/TR 7242:1981
- Chemical analysis of light metals and their alloys — Statistical interpretation of inter-laboratory trials
- 1981-05-31
- ISO 4912:1981
- Textiles — Cotton fibres — Evaluation of maturity — Microscopic method
- 1981-05-31
- ISO 673:1981
- Soaps — Determination of content of ethanol-insoluble matter
- 1981-05-31
- ISO 6541:1981
- Agricultural food products — Determination of crude fibre content — Modified Scharrer method
- 1981-05-31
- ISO 6989:1981
- Textile fibres — Determination of length and length distribution of staple fibres (by measurement of single fibres)
- 1981-04-30
- ISO 4543:1981
- Metallic and other non-organic coatings — General rules for corrosion tests applicable for storage conditions
- 1981-04-30
- ISO 6692:1981
- Cycles — Marking of cycle components
- 1981-04-30
