BS ISO 20779:2018 pdf download

BS ISO 20779:2018 pdf download.Cigarettes — Generation and collection of total particulate matter using a routine analytical smoking machine with an intense smoking regime
1 Scope
This document specifies a method for the generation and collection of total particulate matter (TPM) present in the smoke from cigarettes using a routine analytical smoking machine with an intense smoking regime. It is not applicable to the determination of water or nicotine-free dry particulate matter when using the extraction procedure specified in ISO 4387:2000, 7.9.1 or the subsequent measurement of water specified in ISO 10362-1 or ISO 10362-2. NOTE The type of analytical smoking machine used could impact the mass of TPM collected on the smoke trap. This might be due to either incomplete collection or evaporation of water and other volatile compounds from the smoke trap.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2971, Cigarettes and filter rods — Determination of nominal diameter — Method using a non-contact optical measuring apparatus
ISO 3402, Tobacco and tobacco products — Atmosphere for conditioning and testing
ISO 4387, Cigarettes — Determination of total and nicotine-free dry particulate matter using a routine analytical smoking machine
ISO 8243, Cigarettes — Sampling
ISO 20778, Cigarettes — Routine analytical cigarette-smoking machine — Definitions and standard conditions with an intense smoking regime
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4387 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
3.1 smoking run
specific smoking process to produce such smoke from a sample of cigarettes as is necessary for the generation and collection of the smoke components
[SOURCE: ISO 4387:2000, 3.5, modified]
4 Principle
The test cigarettes are sampled then conditioned. The test cigarettes are smoked on an analytical smoking machine with simultaneous collection of TPM in a glass fibre filter trap. If used, the consistency of the laboratory smoking process and subsequent analytical procedures are controlled by using monitor test pieces specified in ISO 16055. The mass of the TPM (expressed as milligrams per cigarette) so collected is determined gravimetrically if needed. The TPM is extracted from the trap and might be used for the subsequent determination of smoke constituents.