Powered by Google-Search & Google-Books Chinese Standards Shop Database: 169759 (Oct 25, 2020)
HOME   Quotation   Tax   Examples Standard-List   Contact-Us   View-Cart
  

GB/T 30431-2013

Chinese Standard: 'GB/T 30431-2013'
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusRelated Standard
GB/T 30431-2013English150 Add to Cart 0--10 minutes. Auto immediate delivery. Gas chromatograph for laboratory Valid GB/T 30431-2013
GB/T 30431-2013Chinese24 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

  In 0~10 minutes time, full copy of this English-PDF will be auto-immediately delivered to your email. See samples for translation quality.  

BASIC DATA
Standard ID GB/T 30431-2013 (GB/T30431-2013)
Description (Translated English) Gas chromatograph for laboratory
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard N52
Classification of International Standard 17.180.99
Word Count Estimation 21,220
Quoted Standard GB/T 191-2008; GB/T 2829-2002; GB 4793.1-2007; GB/T 11606-2007; GB/T 13384-2008; GB/T 30430-2013
Drafting Organization North of Beijing Rayleigh Analytical Instrument (Group) Co., Ltd.
Administrative Organization National Technical Committee of Standardization for measurement and control of industrial processes
Regulation (derived from) National Standards Bulletin 2013 No. 27
Proposing organization China Machinery Industry Federation
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 requirements for laboratory gas chromatograph, test methods, inspection rules and signs, packaging, transport and storage. This standard applies to common laboratory gas chromatography (hereinafter referred to as "instruments")

GB/T 30431-2013
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 17.180.99
N 52
Gas Chromatograph for Laboratory
实验室气相色谱仪
ISSUED ON. DECEMBER 31, 2013
IMPLEMENTED ON. AUGUST 01, 2014
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 4
1 Scope ... 5
2 Normative References ... 5
3 Abbreviation ... 5
4 Requirements... 6
4.1 Normal working conditions of the instrument ... 6
4.2 Appearance requirements ... 6
4.3 Safety requirements ... 6
4.4 Sealing for airway system ... 7
4.5 Column heater temperature control system ... 7
4.6 Detector system ... 8
4.7 Capillary system ... 8
4.8 Instrument startup time ... 8
4.9 Qualitative repeatability of the instrument ... 8
4.10 Quantitative repeatability of the instrument ... 8
4.11 Transportation and storage of the instrument ... 8
4.12 Completeness of the instrument ... 9
5 Test Methods ... 9
5.1 Test conditions ... 9
5.2 Appearance inspection ... 10
5.3 Safety test of the instrument ... 10
5.4 Sealing of airway system ... 11
5.5 Test and calculation method of column heater ... 11
5.6 Detector system ... 14
5.7 Capillary system ... 21
5.8 Startup time ... 22
5.9 Qualitative repeatability of the instrument ... 22
5.10 Quantitative repeatability of the instrument ... 23
5.11 Transportation and storage test ... 23
5.12 Completeness of the instrument ... 23
6 Inspection Rules ... 23
6.1 Inspection classification ... 23
6.2 Exit-factory inspection ... 23
6.3 Type inspection ... 24
7 Marking, Package, Transportation and Storage ... 26
7.1 Marking of the instrument ... 26
7.2 Package ... 26
7.3 Transportation ... 27
7.4 Storage ... 27
Appendix A (Normative) Flow Rate Correction of Carrier Gas ... 28
Gas Chromatograph for Laboratory
1 Scope
This Standard specifies the requirements, test methods, inspection rules, marking,
package, transportation and storage of gas chromatograph for laboratory.
This Standard is applicable to the general gas chromatograph for laboratory
(hereinafter referred to as “instrument”).
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 document.
GB/T 191-2008 Packaging - Pictorial Marking for Handling of Goods (ISO
780.1997, MOD)
GB/T 2829-2002 Sampling Procedures and Tables for Periodic Inspection by
Attributes (Apply to Inspection of Process Stability)
GB 4793.1-2007 Safety Requirements for Electrical Equipment for Measurement,
Control, and Laboratory Use-Part 1. General Requirements (IEC 61010-1.2001,
IDT)
GB/T 11606-2007 Methods of Environmental Test for Analytical Instruments
GB/T 13384-2008 General Specifications for Packing of Mechanical and Electrical
Product
GB/T 30430-2013 Standard Column Used for Evaluating Gas Chromatography
3 Abbreviation
The following abbreviations are applicable to this document.
TCD. Thermal Conductivity Detector
4.3.2 Dielectric strength
The 1500V, 50Hz AC voltage shall be subjected to among the power phase, the
medium connecting line and casing of the instrument; there is no breakdown or arc-
over phenomena for 1min.
4.3.3 Protective grounding
The protection connection impedance of the instrument shall be no greater than 0.1Ω.
4.3.4 Safety protection sign of the instrument
For the instruments equipped with radioactive source detector, there shall have
radioactive source safety pattern and sign on the outside; the high-temperature heating
zone of the instrument shall have an anti-scald mark.
4.4 Sealing for airway system
4.4.1 Sealing for airway system of carrier gas
Under the condition of room temperature, the pressure drop within 30min is no greater
than 0.01MPa under the hydrogen pressure of 0.3MPa.
4.4.2 Sealing for airway system of fuel gas
Under the condition of room temperature, the pressure drop within 30min is no greater
than 0.01MPa under the hydrogen pressure of 0.3MPa.
4.4.3 Sealing for airway system of combustion-supporting gas
Under the condition of room temperature, the pressure drop within 30min is no greater
than 0.01MPa under the air pressure of 0.3MPa.
4.5 Column heater temperature control system
4.5.1 Temperature control range. 20°C~350°C above the room temperature.
4.5.2 Temperature stability. no greater than 0.5%.
4.5.3 Temperature gradient. no greater than 2.5%.
4.5.4 Minimum adjustment of the setting temperature. no greater than 1°C.
4.5.5 The deviation between the setting temperature and actual temperature shall not
exceed ±3%.
4.5.6 Programmed temperature-rise repeatability. no greater than 1%.
20°C; alternating heat and humidity. relative humidity is 95%, and temperature is 55°C;
the inclined drop height is 250mm; the number of collisions is 1000 times. After the test,
the package box shall not have heavy deformation or damage; the tested instrument
shall be free of the mechanical damages such as deformation, loosening, coating
peeling, etc.; inspect the instrument under the normal working conditions, it shall meet
the requirements of 4.2~4.10.
4.12 Completeness of the instrument
The complete set of the instruments shall include at least the following parts.
a) One host of the gas chromatograph;
b) One set of chromatographic data workstation or one recorder;
c) One set of necessary accessories and spare parts.
5 Test Methods
5.1 Test conditions
5.1.1 Test environmental conditions
See 4.1.
5.1.2 Test equipment and tool
The equipment and tool for instrument test include.
a) Contact current tester;
b) Withstand voltage tester. AC voltage (0~1500) V; frequency 50Hz;
c) Grounding resistance tester;
d) Pressure gauge;
e) Platinum resistance. Pt100(R (0) = 100Ω; W=0.00385);
f) Digital multimeter;
g) Thermometer. temperature resistance 400°C;
h) Stopwatch. the scale value 0.01s;
i) Chromatographic data workstation or recorder;
5.3.2 Dielectric strength
The power plug of the instrument shall not connect to the power grid; connect the high-
voltage output line of the withstand voltage tester with the live and neutral lines of the
instrument power plug; the low-potential output line (black) is connected to the
protective grounding terminal of the instrument power plug. Turn on the power switch
of the instrument; turn on the withstand voltage tester to increase the voltage gradually
to 1500V; keep for 1min; all parts of the instrument have no breakdown or arc-over
phenomena.
5.3.3 Protective grounding
It shall be performed as stipulated in 6.5.1.3 of GB 4793.1-2007.
5.3.4 Safety protection sign of the instrument
Visual inspection.
5.4 Sealing of airway system
5.4.1 Sealing for airway system of carrier gas
Connect the chromatographic column to the detector; block the outlet; connect the
pressure gauge to the system; inject the carrier gas (hydrogen) as per the analysis
procedure; use the regulating value to make the pressure behind the valve 0.3MPa;
shut off the gas source; make system stabilize for 5min; observe the pressure drop
after 30min.
5.4.2 Sealing for airway system of fuel gas
Inject the hydrogen from the fuel gas inlet; block its outlet; connect the pressure gauge
to the system; use the regulating valve to make the system pressure of 0.3MPa; shut
off the gas source; stabilize for 5min; observe the pressure drop after 30min.
5.4.3 Sealing for airway system of combustion-supporting gas
Inject air from the combustion-supporting gas inlet; block its outlet; connect the
pressure gauge to the system; use the regulating valve to make the system pressure
of 0.3MPa; shut off the gas source; stabilize for 5min; observe the pressure drop after
30min.
5.5 Test and calculation method of column heater
5.5.1 Temperature stability of column heater
Fix the thermometer in the effective space of the column heater. Test at the two
temperature points that are 90% of the minimum controllable temperature and
5.6.5.3.1 Test conditions
The sulfur type sample is the parathion-methyl anhydrous ethanol solution with
concentrations of 0.5, 5, 25, 50 (ng/µL).
The rest conditions are the same as 5.6.1.
The phosphorus type sample is the parathion-methyl anhydrous ethanol solution with
concentrations of 1, 10, 20, 50, 100, 500, 1000 (ng/µL).
The rest conditions are the same as 5.6.1.
5.6.5.3.2 Test methods
The test is divided into sulfur type and phosphorus type; the specific methods are as
follows.
a) Sulfur type. After the instrument is stable; inject 1µL of sample; inject sample of
each solution for 7 times; separately take the arithmetic mean of peak area of
parathion-methyl; draw the relationship curve between the sample-injecting
amount of parathion-methyl and peak area; obtain the maximum sample-
injecting amount of parathion-methyl allowed to maintain the linear response, i.e.
the upper lime of linear range. The ratio between the upper limit sample-injecting
amount and minimum detection amount is the linear range of sulfur type.
b) Phosphorus type. After the instrument is stable; inject 1µL of sample; inject
sample of each solution for 7 times; separately take the arithmetic mean of peak
area of parathion-methyl; draw the relationship curve between the sample-
injecting amount of parathion-methyl and peak area; obtain the maximum
sample-injecting amount of parathion-methyl allowed to maintain the linear
response, i.e. the upper lime of linear range. The ratio between the upper limit
sample-injecting amount and minimum detection amount is the linear range of
phosphorus type.
5.6.6 Nitrogen Phosphorus Detector (NPD) system
5.6.6.1 Detection limit
Specimen. A 10ng/µL azobenzene-10 ng/µL malathion-isooctane mixed solution.
Set the chromatographic data workstation or recorder on the appropriate range; after
the instrument is stable, inject 1µL of sample; continuously inject samples for 7 times;
calculate the peak areas of azobenzene and malathion; separately take the arithmetic
mean of the peak area; calculate the detection limit of nitrogen as per Formula (10);
calculate the detection limit of phosphorus as per Formula (11).
6.3 Type inspection
6.3.1 Type test shall be carried out according to the requirements of 4.2~4.11 in case
of one of the following conditions.
a) Plant-transferring production and finalizing of the new and old products;
b) After the formal production, if there are major changes in structure, materials and
processes that may affect the product performance;
c) Inspect once every three years for the normally produced products;
d) When the production is resumed after a long-time shutdown;
e) When there is a significant difference between the exit-factory inspection results
and the previous type inspection results;
f) When the type inspection is proposed by the national quality supervision
department.
6.3.2 The samples for the type inspection shall be randomly selected from the products
that have passed the exit-factory inspection.
6.3.3 The type inspection shall be carried out according to the provisions of GB/T 2829-
2002; take one-time sampling; the inspection items of the device, unqualified quality
level (RQL), determining level (DL) shall be performed as per the provisions of Table
3. The batch quality shall be expressed by the number of unqualified products per
hundred units of products.
6.3.4 If the type inspection is unqualified; analyze the causes, find out the questions,
and implement the corresponding measures; after improving the device products,
repeat the type inspection. If the type inspection fails again, then suspend the
production, and devices shall not leave the factory; after the problems are solved; and
the type inspection is qualified, then the exit-factory inspection can be resumed.
6.3.5 If the type inspection is qualified, and the exit-factory inspection is also qualified,
then the products shall leave the factory or store in the warehouse as the qualified
products. If the products leave the fact......
Related standard:   GB/T 30431-2020  GB/T 30430-2019
   
 
Privacy   ···   Product Quality   ···   About Us   ···   Refund Policy   ···   Fair Trading   ···   Quick Response
Field Test Asia Limited | Taxed in Singapore: 201302277C | Copyright 2012-2020