ISO 7210:2018 PDF

Overview

ISO 7210:2018 specifies additional test methods for routine analytical cigarette-smoking machines used to verify conformity with ISO 3308 and ISO 20778. It is a verification-focused standard - not a smoking protocol - and defines procedures and apparatus requirements to check machine performance parameters such as pressure drop, puff profile parameters, restricted smoking, and the soap film bubble flowmeter for puff-volume calibration. A certificate of conformity can be obtained from the machine manufacturer.

Key topics and technical requirements

• Pressure drop (Clause 4)

  • Defined as the static pressure difference across the pneumatic circuit at a volumetric flow of 17.5 ml/s.
  • Measurement uses a manometer and a controlled airflow; procedure includes zeroing the manometer, establishing 17.5 ml/s flow, taking baseline and machine-connected readings, and reporting PD per channel in pascals.
  • All measurements under standard test atmosphere per ISO 3402.

• Puff profile parameters (Clause 5)

  • Continuous measurement of puff flow rate through a pressure-drop device of 1 000 Pa ± 50 Pa.
  • Two alternative measuring systems: System A (analog pressure transducer → integrator/recorder) and System B (digital acquisition and computer).
  • Apparatus requirements include limiting added pressure drop (≤ 300 Pa), using a laminar flow element with nominal 100 Pa ± 10 Pa at 17.5 ml/s, and a pressure transducer with accuracy ±5 Pa or better and minimal response frequency 1 kHz.
  • Reportable parameters: total puff volume, maximum flow rate, time to peak flow, residual volume after suction stops, and total puff duration (target values per ISO 3308 / ISO 20778).

• Verification of restricted smoking (Clause 6)

  • Methods to quantify smoulder-stream smoke volume between puffs (applies to discontinuous-function machines).

• Soap film bubble flowmeter (Clause 7)

  • Describes a primary device (soap film burette / bubble flowmeter) for determining puff volume used to calibrate secondary measurement systems.

Applications and users

• Who uses ISO 7210:2018

  • Smoking-machine manufacturers (verification and certification)
  • Analytical test laboratories and QA/QC teams
  • Regulatory bodies and standards compliance auditors
  • Tobacco research groups and instrument calibration services

• Practical uses

  • Routine machine verification and acceptance testing
  • Calibration of electronic flow-measurement systems against a primary soap-film burette
  • Ensuring repeatable, accurate puff profiles for comparative analytical testing
  • Demonstrating conformity with ISO 3308 and ISO 20778 for regulatory or contractual purposes

Related standards

• ISO 3308 - Routine analytical cigarette-smoking machine (definitions & standard conditions)
• ISO 20778 - Cigarettes: intense smoking regime (definitions & standard conditions)
• ISO 3402 - Atmosphere for conditioning and testing
• ISO 4387, ISO 20779 - Related particulate-matter generation/collection methods

Keywords: ISO 7210:2018, cigarette-smoking machine, machine verification, puff profile, pressure drop, soap film bubble flowmeter, smoking machine calibration, ISO 3308, ISO 20778.