GB/T 26913-2011: Bamboo charcoal

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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
Order No. 75 (2005) General Administration of Quality Supervision Provisions of the
Metrological Supervision and Administration of Quantitatively Packed Commodities
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.
groove depth. 4mm.
6.5.2.2 High temperature electric furnace. With temperature control device which can
maintain at (850±20)°C.
6.5.2.3 Crucible holder. Made of nichrome wire. Crucible’s size does not exceed the limit
of constant temperature region in the high temperature furnace. And MAKE the bottom of
the crucible on the shelf of the crucible to be 10mm - 15mm from the bottom of the
furnace.
6.5.2.4 Analytical balance. Sensitive of 0.1mg.
6.5.2.5 Stopwatch or time clock.
6.5.2.6 Dryer. with desiccant (Not-deliquescent bulk-shape calcium chloride or silica gel)
in it.
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. COVER the crucible. Gently SHAKE to make the test
sample spread out. PLACE it on the crucible shelf. Then, quickly PLACE it into the high
temperature electric furnace that has been pre-heated to 850°C. The crucible locates
above or below the measurement point of the thermocouple. CONTINUE to heat it for
7min. The temperature of furnace drops at the beginning, but shall be restored to
(850±20)°C within 3min. If there are obvious sparks, it shall be redone.
Finally, TAKE the crucible out and PLACE it on the porcelain plate. COOL it in the air for
5min. PLACE it in a dryer and COOL it to the room temperature. And WEIGH it.
6.5.4 Result calculation
Determination results of the ash content of bamboo charcoal are calculated according to
formula (3).
Where.
V — Volatile matter content of test samples %;
m1 — Mass of test samples, in unit of gram (g);
m2 — Mass of test samples after heating, in unit of gram (g).
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.
a) When the product production is resumed after a long-term shutdown;
b) Change of material or key production process which may affect product quality;
c) When national quality and supervision agency puts forward the request of type
inspection;
d) The Ex-factory inspection is quite different from the last type inspection;
e) During normal production, periodic inspection shall be conducted at least once a
year.
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.
8.2 Package and storage
Product package shall be firm, clean and moisture-proof. Package material, type
specification and net weight of the same batch shall be consistent. Stipulations in the
contract otherwise shall prevail. Products shall be stored in shady, airy and dry warehouse,
away from fire source and prevented from exposing to the sun and rain. For safety
consideration, newly-burned bamboo charcoal shall be processed and packaged after
spreading-out for 3 days.

Basic Data

Standard ID	GB/T 26913-2011 (GB/T26913-2011)
Description (Translated English)	Bamboo charcoal
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	B73
Classification of International Standard	65.020
Word Count Estimation	10,154
Date of Issue	2011-09-29
Date of Implementation	2011-12-01
Quoted Standard	JJF 1070
Regulation (derived from)	National Standards Bulletin 2011 No. 14
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies the terms and definitions charcoal, classification and labeling, technical requirements, test methods, inspection rules, marking, labeling and packaging. This standard applies to bamboo as raw material obtained through pyrolysis of charcoal.