GB/T 26913-2025 (GB/T 26913-2011) PDF English
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GB
ICS 65.020
B 73
NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC
OF CHINA
Bamboo charcoal
Issued on. SEPTEMBER 29, 2011
Implemented on. DECEMBER 1, 2011
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... 4
2 Normative references... 4
3 Terms and definitions... 4
4 Classification and mark... 5
5 Technical requirements... 6
6 Test Methods... 7
7 Inspection rules... 12
8 Logo, Label, Package and Storage... 13
Annex A... 15
Foreword
Annex A of this standard is informative.
This Standard was proposed by China's State Forestry Administration (SFA).
This Standard shall be under the jurisdiction of National Technical Committee on (SAC/TC
263) Bamboo and Rattan of Standardization Administration of China.
The participating drafting organizations of this standard. National Quality Supervision and
Inspection Center of Green Products, Zhejiang Forestry College, International Centre For
Bamboo and Rattan, Quzhou Minxin Charcoal Co., Ltd, Zhejiang Jianzhong Bamboo
Charcoal Co., Ltd, Suichang Biyan Bamboo Charcoal Co., Ltd, Zhejiang Maitanwong
Ecology Development Co., Ltd, Quzhou Modern Charcoal Industry Co., Ltd, Zhejiang
Fulaisen Carbon Material Co., Ltd, Zhejiang Jiejiegao Charcoal Co., Ltd, Deqing Jiayi
Charcoal Industry Co., Ltd, Ningbo Zheshang Bamboo Charcoal Co., Ltd, and Zhejiang
Green Valley Charcoal Co., Ltd.
The chief drafting staffs of this standard. Zhao Shukai, Zhang Wenbiao, Li Congfen, Li Jie,
Liu Xin, Liu Liang, Zhang Dongsheng, Liu Xinxing, Yan Hua, Bao Ligen, Ding Jianzhong,
Tu Zhilong, Fang Yunjian, Wu Quansheng, Wang Zhengyu, Ye Xinjun, Yu Genming, You
Yazhen, and Lei Xiaojun.
Bamboo charcoal
1 Scope
This Standard specifies the terms and definitions, classification and mark, technical
requirements, test methods, inspection rules, logo, label and package of bamboo
charcoal.
This Standard shall be applicable to bamboo charcoal made of bamboo through the
pyrolysis method.
2 Normative references
The articles contained in the following documents have become part of this Standard
when they are quoted herein. For the dated documents so quoted, all the modifications
(excluding corrections) or revisions made thereafter shall not be applicable to this
Standard. For the undated documents so quoted, the latest editions shall be applicable to
this Standard.
JJF 1070 Rules of Metrological Testing for Net Quantity of Products in Prepackages
with Fixed Content
3 Terms and definitions
For the purpose of this standard, the following terms and definitions shall apply.
3.1
Bamboo charcoal
Under the conditions of high temperature and limited oxygen (or isolated oxygen), the
bamboo is heated through pyrolysis, so as to obtain the black solid.
3.2
Tube charcoal
The tubular bamboo charcoal.
3.3
Flake charcoal
The bamboo charcoal in bamboo-flake shape.
3.4
Broken charcoal
After bamboo is gone through pyrolysis, the irregular-shape bamboo charcoal that is not
processed.
4 Classification and mark
4.1 Classification
4.1.1 According to shape and size
According to different shapes and sizes, bamboo charcoal is divided into tube charcoal,
flake charcoal, broken charcoal, particle charcoal, and powder charcoal.
Specifications of particle charcoal are shown in Table 1.
4.2 Mark
Bamboo charcoals are marked by the difference of shape and size. Specific methods are
shown in Table 2.
5 Technical requirements
5.1 Sense
Black, odorless.
5.2 Deviation of net content
Deviation of net content shall conform to Decree No.75 Measures for Metrological
Supervision of Quantitatively Packed Commodities issued by General Administration of
Quality Supervision, Inspection and Quarantine of the People’s Republic of China.
6 Test Methods
6.1 Sense
PLACE bamboo charcoal sample on a piece of white paper. Under a bright environment,
DETERMINE it by visual and smell methods. For tube charcoal and flake charcoal,
6.2 Net Content
Executed according to the provisions of JJF 1070.
6.3 Determination of moisture content
6.3.1 Method summary
Test sample with certain mass is dried to constant weight at (105±5)°C. TAKE the
percentage OF mass-reduction amount TO the original test sample’s mass as the
moisture content.
6.3.2 Instruments
6.3.4 Result calculation
Determination results of the moisture content of bamboo charcoal are calculated
according to formula (1).
6.4 Determination of ash content
6.4.1 Method summary
At (800±20)°C, test sample with a certain mass is burned to constant weight (WEIGH after
cooling). The percentage OF residue mass TO the original test sample’s mass is the ash
content.
6.4.2 Instruments
6.4.3 Operating methods
PUT the porcelain crucible into the high temperature electric furnace. BURN to constant
weight at (800±20)°C. PLACE the crucible in a dryer for cooling to the room temperature
(about 30min). WEIGH it (accurate to 0.1mg).
6.4.4 Result calculation
Determination results of the ash content of bamboo charcoal are calculated according to
formula (2).
6.5 Determination of volatile matter content
6.5.1 Method summary
At the temperature of (850±20)°C, test sample with certain mass is heated for 7min with
isolation from the air. The percentage OF lost mass TO the original test sample’s mass is
the volatile matter content.
6.5.2 Instruments
6.5.3 Operating methods
WEIGH 1g (accurate to 0.1mg) of test sample that has been crushed and gone through
0.315mm (55-mesh) sieve. PLACE in the porcelain crucible that has been burned to
constant weight at (850±20)°C.
6.5.4 Result calculation
Determination results of the ash content of bamboo charcoal are calculated according to
formula (3).
6.6 Determination of the fixed carbon content
6.6.1 Method summary
CALCULATE the fixed carbon content BY the mass of dried bamboo charcoal MINUS its
ash content and volatile matter content.
6.6.2 Instruments
6.6.2.1 High temperature electric furnace. With temperature control device,
thermocouple and high-temperature meter.
6.6.2.2 Porcelain crucible with cover. Volume of 30mL.
6.6.3 Operating methods
CRUSH the analysis test sample until all can go through the 0.315mm-sieve (55 meshes).
DRY to constant weight at the temperature of 102°C~105°C. The mass of the test sample
shall not be less than 30g, for the use of testing the ash content and volatile matters.
6.6.4 Result calculation
Determination results of the fixed carbon of bamboo charcoal are calculated according to
formula (4).
7 Inspection rules
7.1 Lot-group rules and sampling method
7.1.1 Lot-group rule
The products - among which the raw material and production conditions are basically
consistent; and are manufactured on the same day or by the same shift - shall be deemed
as a batch. Sampling shall be conducted according to batch number.
7.1.2 Sampling method
7.2 Inspection
The product inspection is divided into ex-factory inspection and type inspection.
7.2.1 Ex-factory inspection
Ex-factory inspection shall be conducted for each batch of products. Ex-factory inspection
shall be performed by the quality inspection department of the manufacturer or entrusted
to third-party inspection agency. Inspection items are the sense, net content deviation,
and moisture.
7.2.2 Type inspection
Inspection items of type inspection include all items required in this Standard.
Type inspection shall be conducted, when there is one of the following conditions.
7.3 Decision rules
If one inspection result does not comply with the requirements defined in this Standard,
re-inspection shall be performed with double sampling. If the re-inspection result is still
unqualified, this batch of products shall be decided as unqualified.
8 Logo, Label, Package and Storage
8.1 Logo and label
Product logo shall include at least the following contents. product name and brand, type
specification, net content, executive standard, production date, quality level, manufacturer
name, production place, and factory address etc.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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