DD ISO TS — ISO Technical Specifications (ISO/TS) Single-File Series Overview (48 Standards)

📋 DD ISO/TS are ISO Technical Specifications adopted by BSI in its Draft for Development (DD) series. An ISO Technical Specification is used to publish normative content that is technically mature but has not yet entered the formal International Standard (IS) process — particularly suited to fields that evolve quickly and need rapid methodological alignment. This review brings together 48 single-file technical specifications in this batch, covering nanotechnologies and carbon-nanotube characterisation, water and soil quality, medical devices and food safety, industrial trucks and escalator safety, geometrical product specifications (GPS) and measurement uncertainty, hydrometry and geographic information.

1. Series Background 📌

When an ISO technical committee has completed the research for a technology and sees value in unified normative content, but the consensus and stability required for a formal International Standard are not yet in place, it first issues a Technical Specification (TS) for trial use. BSI adopts these in its DD series as DD ISO/TS, enabling UK users to access the international normative drafts at the earliest opportunity and to feed back during trial use.

The 48 specifications in this batch fall roughly into four groups: nanomaterials and surface analysis methods (DD ISO/TS 10798/10868/11308/11888/12805/13278/15338/25138 etc.); testing and measurement methods (water, soil, dairy, oils, carbon black, particle size and measurement uncertainty); product and safety requirements (industrial trucks, escalators, medical devices, trial contact-lens hygiene management); and information and documentation (health informatics, geographic information, reference designation systems, technical product documentation).

2. Standard Inventory (48 items) 📚

The table below lists all 48 single-file DD ISO/TS technical specifications in this batch, ordered by number, with the document number and subject.

3. Technical Points of Representative Documents 🔬

1. DD ISO/TS 28037:2010 — Determination and Use of Straight-Line Calibration Functions

This specification gives the determination and use of straight-line calibration functions, covering least-squares fitting, weighting, uncertainty propagation, goodness-of-fit testing and inverse prediction (deriving the measurand from instrument response). It is the general methodology document for handling calibration data in metrology, chemical analysis and environmental monitoring, and is highly instructive for laboratories establishing traceable calibration procedures and uncertainty evaluation.

2. DD ISO/TS 13278:2011 — Determination of Elemental Impurities in Carbon Nanotubes (ICP-MS)

This specification defines the method for determining elemental impurities in carbon-nanotube samples by inductively coupled plasma mass spectrometry (ICP-MS), covering sample digestion, internal-standard selection, interference correction and result expression. Residual metal catalysts in carbon nanotubes can affect performance and biosafety; this method provides a reliable tool for the quality control and safety assessment of nanomaterials and is an important part of the nanotechnology standards system.

3. DD ISO/TS 15495:2010 — Determination of Melamine and Cyanuric Acid in Milk Products and Infant Formulae

This specification provides guidelines for the quantitative determination of melamine and cyanuric acid in milk, milk products and infant formulae by LC-MS/MS, defining sample preparation, chromatographic and mass-spectrometric conditions, quantification strategy and result confirmation. As a key method document responding to food-safety emergencies, it helps testing laboratories carry out risk surveillance with consistent sensitivity and selectivity.

4. DD ISO/TS 24679:2011 — Performance of Structures in Fire (Fire Safety Engineering)

This specification is the application guidance of the fire safety engineering (FSE) approach to structural fire performance assessment, explaining how to evaluate the performance of structural members and the whole structure in fire based on fire-scenario analysis, heat-transfer calculation and structural response analysis, aligned with performance-based design objectives. It provides a systematic technical path for fire engineers carrying out performance-based fire design.

5. DD ISO/TS 25740-1:2011 — Safety Requirements for Escalators and Moving Walks: Global Essential Safety Requirements (GESR)

This specification defines Global Essential Safety Requirements (GESR) applicable to escalators and moving walks, from hazard identification and risk assessment to safety-function design, providing a common basis for countries developing or harmonising escalator safety rules. It emphasises a risk-oriented design philosophy and helps manufacturers, inspection bodies and regulators evaluate and improve product safety within a unified framework.

4. Engineering Practice 🛠️

• 📊 Laboratory application: straight-line calibration (DD ISO/TS 28037), measurement uncertainty (21749/19036) and particle-size analysis (13762) are general methodology documents for laboratory quality control.
• 🧪 Food safety: melamine determination (15495), fermented-milk acidity (11869), lactoperoxidase (17193) and vegetable-oil wax content (23647) support routine testing in the food and dairy industries.
• ⚙️ Machinery and safety: the industrial-truck (3691-7) and escalator (25740-1) specifications support machinery safety design and regulation, and can be combined with EU Machinery Directive conformity work.
• 🌊 Environment and hydrology: water quality (16489/23893), soil (17924/22939) and hydrometry (3716/24154) documents provide the methodological basis for environmental monitoring and water-resource management.

5. Frequently Asked Questions ❓