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GB/T 22838.2-2009 English PDF (GBT22838.2-2009)

GB/T 22838.2-2009 English PDF (GBT22838.2-2009)

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GB/T 22838.2-2009: Determination of physical characteristics for cigarettes and filter rods -- Part 2: Length -- Photoelectricity method
GB/T 22838.2-2009
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 65.160
X 87
Determination of physical characteristics for
cigarettes and filter rods - Part 2. Length -
Photoelectricity method
ISSUED ON. APRIL 03, 2009
IMPLEMENTED ON. MAY 01, 2009
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative References ... 5 
3 Principle of Measurement ... 5 
4 Instruments... 6 
5 Sampling and Sample Preparation ... 6 
6 Measuring Steps ... 6 
7 Result Expression ... 7 
8 Measurement Report ... 7 
Annex A ... 8 
Foreword
GB/T 22838 "Determination of physical characteristics for cigarettes and filter
rods" is divided into 18 parts.
- Part 1. Cigarettes packaging and mark;
- Part 2. Length - Photoelectricity method;
- Part 3. Circumference - Laser method;
- Part 4. Cigarettes weight;
- Part 5. Cigarettes draw resistance and filter rods pressure drop;
- Part 6. Hardness;
- Part 7. Cigarettes dust content;
- Part 8. Moisture;
- Part 9. Cigarettes loose end;
- Part 10. Open seam;
- Part 11. Cigarettes extinguish;
- Part 12. Cigarettes appearance;
- Part 13. Filter rods roundness;
- Part 14. Filter rods roundness;
- Part 15. Cigarettes - Determination of ventilation - Definitions and
measurement principles;
- Part 16. Cigarettes - Determination of loss of tobacco from the ends –
Method using a rotating cylindrical;
- Part 17. Cigarettes - Determination of loss of tobacco from the ends –
Method using a vibro-bench;
- Part 18. Cigarettes - Determination of loss of tobacco from the ends –
Method using a rotating box.
This is part 2 of GB/T 22838.
Annex A of this part is informative.
This part was proposed by the State Tobacco Monopoly Bureau.
Determination of physical characteristics for
cigarettes and filter rods - Part 2. Length -
Photoelectricity method
1 Scope
This part of GB/T 22838 specifies the determination methods for cigarettes and
filter rods length.
This part applies to cigarettes and filter rods.
2 Normative References
The provisions in following documents become the provisions of this part
through reference in this this part of GB/T 22838. For dated references, the
subsequent amendments (excluding corrigendum) or revisions do not apply to
this Standard, however, parties who reach an agreement based on this
Standard are encouraged to study if the latest versions of these documents are
applicable. For undated references, the latest edition of the referenced
document applies.
GB/T 5605-2002 Tobacco and tobacco products, acetate fiber filter rods
GB/T 5606.1 Cigarette - Part 1. Sampling
GB 5606.3-2005 Cigarette - Part 3. Technical requirements for packing,
making, storage and transport
GB/T 15270-2001 Tobacco and tobacco products - Polypropylene tow filter
rod
GB/T 16447 Tobacco and tobacco products – Atmosphere for conditioning
and testing (GB/T 16447-2004, ISO 3402.1999, IDT)
3 Principle of Measurement
Use a parallel beam to conduct projection or scanning to cigarettes and filter
ends, so as to form an optical signal, which is received by photoelectric
receiving device AND processed by data processing system; then give out the
length-value of cigarettes and filter rods.
NOTE. Projection method can also be used to determine the length of cigarettes and filter rod,
operation procedures.
6.3 Based on the specifications of sample, SELECT standard filter rod of
corresponding length. CONDUCT calibration for the standard length of
instrument.
6.4 PLACE cigarette or filter rod in the measuring position, so that the parallel-
light can irradiate to the ends of cigarette or filter rod. CONDUCT the projection
or scanning to the ends of cigarette or filter rod.
6.5 Based on photoelectric receiving device and data processing system,
READ out the length of cigarette or filter rod.
6.6 REPEAT steps 6.4 ~ 6.5. TEST totally 30 specimens.
7 Result Expression
EXPRESS the measurement results in millimeter, accurate to 0.1mm.
8 Measurement Report
Measurement report shall include the following content.
- Sample marks and instructions;
- Number of standard used;
- Instruments used and models;
- Measurement time;
- Environmental conditions of measurement;
- Measurement results.

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