QB/T 4348-2012 English PDF (QBT4348-2012)

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QB/T 4348-2012: Cleaner for kitchen stains and grease
QB/T 4348-2012
ICS 71.100.40
Classification number. Y 43
Registration number. 36751-2012
QB
LIGHT INDUSTRY STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Cleaner for kitchen stains and grease
厨房油垢清洗剂
ISSUED ON. MAY 24, 2012
IMPLEMENTED ON. NOVEMBER 01, 2012
Issued by. Ministry of Industry and Information Technology of the
People's Republic of China
Table of contents
Foreword ... 3 
1 Scope ... 4 
2 Normative references ... 4 
3 Requirements ... 5 
4 Test method ... 6 
5 Inspection rules ... 7 
6 Marking, packaging, transport, and storage ... 7 
APPENDIX A (Normative) Detergency test ... 9 
APPENDIX B (Informative) Grubbs method ... 16 
Foreword
The standard was drafted in accordance with the rules given in GB/T 1.1-2009
Directives for standardization – Part 1. Structure and drafting of standards.
This standard was proposed by China Light Industry Association.
This standard shall be under the jurisdiction of National Centre for
Standardization of Detergent Products.
The drafting organizations of this standard. Beijing Green Umbrella Chemical
Co., Ltd., China Daily Chemical Industry Research Institute/National detergent
quality supervision and inspection centre.
The main drafters of this standard. Zhang Hui, Zhao Xinyu, Yan Fang, Qi Muge.
Cleaner for kitchen stains and grease
1 Scope
This standard specifies the requirements, test methods, inspection rules,
marking, packaging, transport and storage of kitchen grease stain detergent.
This standard is applicable to the liquid detergent products which are prepared
by various surface active agent, auxiliary, and solvent AND used for the
cleaning and decontamination of all kinds of hard surfaces in kitchen.
This standard does not apply to solid kitchen grease stain detergent products.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 6368 Surface active agents – Determination of pH of aqueous solution
– Potentiometric method
GB/T 6682 Water for analytical laboratory use – Specification and test
methods
GB/T 7378 Surface active agents – Determination of alkalinity – Titrimetric
method
GB/T 13173-2008 Surface active agents – Detergents – Testing methods
GB/T 26396-2011 Technical specification for safety of soaps and detergents
QB/T 2117-1995 General water-based metal detergents
QB/T 2951 Inspection rules for detergent products
QB/T 2952 Requirements for detergent marks and packaging
JJF 1070 Rules for metrological testing for net quantity of products in
prepackages with fixed content
The State Administration of Quality Supervision, Inspection and Quarantine’s
Directive [2005] No.75 - Measures for the measurement and supervision of
products in prepackages with fixed content.
3 Requirements
3.1 Materials
The kitchen grease stain detergent products and raw materials used shall
comply with the requirements of category C products in GB/T 26396 -2011.
3.2 Sensory indicators
3.2.1 Appearance
The product shall be of uniform liquid which is free from delamination,
suspended matter, sedimentations, or obvious mechanical impurities (except
for the product having the uniformly suspended grain components).
3.2.2 Odor
The product shall have no odor, AND be in consistent with the specified flavor
type.
3.2.3 Stability
PLACE the product into (-5 ± 2) °C refrigerator for 24 h; TAKE it out and LET it
restore to room temperature; CONDUCT observation; it shall be free from
sedimentations or discoloration, AND the transparent product shall not be turbid;
PLACE the product in the (40 ± 2) °C incubator for 24 h; TAKE it out and
CONDUCT observation immediately; it shall be free from odor, delamination, or
discoloration, AND transparent product shall not be turbid
Note. Stability means that the sample appearance has no obvious change
before and after the test.
3.3 Physical and chemical indicators
The physical and chemical indicators of the kitchen grease stain detergent
products shall comply with the provisions of Table 1.
d) UV constant temperature aging box, temperature control at (45 ± 2) °C,
the working chamber size 500mm x 500mm x 650mm, the UV lamp
installed, distributed as per Figure A.1;
e) Constant temperature water bath, temperature control at (30 ± 2) °C;
f) Test piece, ICr18Ni9Ti, brushed stainless steel, 50mm x 50mm x 3mm;
g) Electric stirring device, controllable speed 1000 r/min;
h) Hair brush, width 10 mm ~ 20 mm.
i) Porcelain plate M1, M2, 330 mm x 250 mm; small porcelain plate, 4 pieces,
165 mm x 125 mm;
j) Plastic beaker 250 mL.
k) Glass beaker, 300 mL, Φ (80 ± 1) mm OR the other beaker types of same
diameter;
l) Glass culture dish, Φ 90 mm;
m) Tray, ceramic or stainless steel;
n) Dryer, built-in allochroic silica gel;
o) Analytical balance, maximum weighing is 200 g AND sensitivity is 0.0002
g;
p) Balance, maximum weighing is 500 g AND sensitivity is 0.01 g;
q) Stopwatch.
A.4 Test procedure
A. 4.1 Artificial stain preparation
Formula. soybean oil 64.0 g, nitrogen free caramel pigment 8.0 g, wheat flour
12.0 g, lard 8.0 g, butter 8.0 g, glycerin monostearate 2.4 g.
In a 250 mL plastic beaker, WEIGH soybean oil, butter, lard, and glycerin
monostearate. At the water bath of 50 °C, HEAT to melt them; STIR to cool it to
30 °C; ADD nitrogen free caramel pigment; at the speed not less than 1000
r/min, STIR it for 30 min; after they are emulsified uniformly, ADD the wheat
flour; STIR them for another 10 min; MAKE it subject to aging for 24 h;
PRESERVE it in refrigerator freezer for use; before use, MAKE its temperature
reach to 20 ~ 25 °C.
M1 – The mass of the stained test piece before being washed, in the unit of
gram (g);
M2 – The mass of the stained test piece after being washed, in the unit of
gram (g);
USE the Grubbs method to remove the suspected data, BUT at least retain four
data; USE the arithmetic mean of the retained data as the final detergency.
A.4.5 Precision
Under the repeated conditions, the absolute difference between the obtained
two independent measurement results is not more than 3%; AND the
preconditions are based wherein the said difference is not more than 5% if it
exceeds 3%.