GB/T 40219-2021 PDF in English
GB/T 40219-2021 (GB/T40219-2021, GBT 40219-2021, GBT40219-2021)
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General specification for Raman spectrometers
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GB/T 40219-2021: PDF in English (GBT 40219-2021) GB/T 40219-2021
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 71.040.10
N 53
General specification for Raman spectrometers
ISSUED ON: MAY 21, 2021
IMPLEMENTED ON: DECEMBER 01, 2021
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 5
4 Categories... 6
5 Requirements ... 7
6 Test method ... 9
7 Inspection rules ... 13
8 Marking, packaging, transportation, storage ... 15
Appendix A (Informative) Example of low-voltage discharge lamp spectrum . 17
Appendix B (Informative) Reference shift value of Raman spectrum ... 18
References ... 20
General specification for Raman spectrometers
1 Scope
This standard specifies the terms and definitions, classification, requirements,
test methods, inspection rules, markings, packaging, transportation, storage of
Raman spectrometers.
This standard applies to Raman spectrometers, which use laser as the
excitation light source (hereinafter referred to as the instrument). The
instruments, which use other light sources, may make reference to this
standard.
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) is applicable to this standard.
GB/T 191-2008 Packaging - Pictorial marking for handling of goods
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
GB 7247.1-2012 Safety of laser products - Part 1: Equipment classification
and requirements
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 13966-2013 Terminology for analytical instruments
GB/T 17626.2-2018 Electromagnetic compatibility - Testing and
measurement techniques - Electrostatic discharge immunity test
GB/T 17626.3-2016 Electromagnetic compatibility - Testing and
measurement techniques - Radiated, radio-frequency, electromagnetic field
immunity test
GB/T 17626.4-2018 Electromagnetic compatibility - Testing and
measurement techniques - Electrical fast transient/burst immunity test
GB/T 17626.5-2019 Electromagnetic compatibility - Testing and
measurement techniques - Surge immunity test
GB/T 18268.1-2010 Electrical equipment for measurement, control and
laboratory use - EMC requirements - Part 1: General requirements
GB/T 34065-2017 Safety requirements for analyzers
3 Terms and definitions
The terms and definitions as defined in GB/T 13966-2013, as well as the
following terms and definitions, apply to this document.
3.1
Raman scattering
A phenomenon, where monochromatic incident light interacts with the
medium to produce scattered light, which has a frequency different from the
original incident light; meanwhile the relative frequency shift is symmetrically
distributed on both sides of the incident light frequency.
3.2
Raman shift
The difference, BETWEEN the absolute wavenumber of incident light AND
the absolute wavenumber of scattered light.
Note: The unit is cm-1.
3.3
Raman spectrum
The distribution of Raman scattering intensity versus Raman shift.
3.4
Raman spectrometer
An instrument, which is used to collect Raman spectrum of specimen,
portable instruments (according to the group III conditions), after subject to the
test of upper temperature limit and lower temperature limit of instrument, the
spectral resolution and shift accuracy shall meet the requirements of 5.3.
The portable instrument shall meet the requirements of 5.3, after the vibration
test.
The portable instrument's electrostatic discharge immunity, radio frequency
electromagnetic field radiation immunity, electrical fast transient pulse group
immunity, surge (shock) immunity, shall meet the requirements of Table 1 in
GB/T 18268.1-2010.
5.7 Transportation, transportation, storage
When the instrument is transported and packaged, it shall select the test
conditions for transportation and storage, according to the requirements of the
environmental condition grouping in Table 1 of GB/T 11606-2007. After the test
according to 6.12, the package shall not have significant deformation or
damage; the instrument shall not have mechanical damage, such as
deformation or loosening, peeling off of coating, etc.; the spectral resolution and
shift accuracy shall meet the requirements of 5.3.
6 Test method
6.1 Preparation before test
Set the instrument parameters, according to the requirements of the instrument
manual, such as laser wavelength and power, objective lens, slit width, grating
line, other related conditions. The laser power is the nominal power OR the
recommended value in the instrument manual. When testing the instrument, it
shall indicate the environmental temperature, the wavenumber measurement
range declared by the instrument, the wavelength and power of the excitation
light, the size of the slit, the number of grating lines and focal length of the
spectroscopic system, the sampling integration time, as well as other
instrument setting conditions. For confocal Raman microscopy spectrometers,
it shall also indicate the obvious micro objective lens, pinhole size, as well as
other instrument parameters, which are closely related to the confocal
performance.
Unless otherwise specified, the following test methods from 6.2 to 6.8 are
required to be carried out, under the same conditions as above.
6.2 Test conditions
After the instrument has been prepared for the test, the performance test shall
be started under the following test conditions:
a) Unless otherwise specified, the test shall be carried out under the
conditions specified in 5.1; the temperature fluctuation shall not exceed
±2 °C;
b) The instrument shall be preheated, in accordance with the requirements
of the instrument specification, before the test;
c) Test supplies: Element lamps: neon lamps, argon lamps, mercury lamps,
element lamps of other wave band, etc.;
d) Test sample: monocrystalline silicon (111); elemental sulfur (analytical
pure), naphthalene (analytical pure), polystyrene flakes.
6.3 Functional inspection
In accordance with the provisions of 5.2, carry out visual observation and hand-
feeling inspection, item by item.
6.4 Spectral resolution
Turn off the laser. Within the measurable spectrum range of the instrument,
select the appropriate characteristic spectral lines of the element lamp, near the
lower limit, upper limit, middle, respectively (see Appendix A for example). After
the intensity of the light, which is output by the element lamp, is attenuated,
introduce the measurement optical path of the spectrometer. Select three
characteristic spectral lines of strong signals, at approximately equal interval,
for measurement. Measure and record the full width at half maximum of each
spectral peak of the element lamp. Repeat the measurement 6 times. Take the
average value as the resolution of each band, under the corresponding
excitation wavelength. Take the maximum value as the spectral resolution of
the instrument.
6.5 Shift accuracy
Turn on the laser. According to the test conditions in 6.2, place the standard
sample at the focus of the instrument signal acquisition probe. Measure the
Raman spectrum of the reference sample, according to the wavenumber
measurement range, which is declared by the instrument. In the range of 50
cm-1 ~ 200 cm-1, measure the Raman peak of elemental sulfur, at 153.8 cm-1.
In the range of 200 cm-1 ~ 2000 cm-1, measure the Raman peak of polystyrene,
at 1001.4 cm-1. In the range of 2000 cm-1 ~ 4000 cm-1, measure the Raman
peak of naphthalene, at 3056.4 cm-1. Record the shift value of the selected
characteristic peak. Repeat the measurement 3 times. Calculate the difference,
BETWEEN the measured shift value of the corresponding characteristic peak
AND the standard shift value (see Appendix B), according to formula (1). Take
the difference, which has the largest absolute value, as the shift accuracy of
instrument.
6.11.3.1 Electrostatic discharge immunity
Carry out the test, in accordance with the contact discharge test procedure,
which is specified in GB/T 17626.2-2018.
6.11.3.2 Radio frequency electromagnetic field radiation immunity
Carry out the test, in accordance with the procedure, which is specified in GB/T
17626.3-2016.
6.11.3.3 Electrical fast transient pulse group immunity
Carry out the test, in accordance with the procedure, which is specified in GB/T
17626.4-2018.
6.11.3.4 Surge (shock) immunity
Carry out the test, in accordance with the procedure, which is specified in GB/T
17626.5-2019.
6.12 Transportation, transportation, storage test
When the instrument is in the packaged state, it is tested according to the
methods in Chapter 8, Chapter 15, Chapter 16, Chapter 17, Chapter 18 in GB/T
11606-2007.
7 Inspection rules
7.1 Classification of inspections
Instrument inspection is divided into exit-factory inspection and type inspection.
7.2 Exit-factory inspection
7.2.1 See Table 2 for the item categories of the exit-factory inspection.
7.2.2 Each instrument shall be qualified in the inspection. If the exit-factory
inspection fails OR if there is nonconformances, it shall be reworked and re-
inspected. Only after the re-inspection of all items are qualified, it can be exit-
factory.
7.3 Type inspection
7.3.1 Timing of inspection
Type inspection is carried out in one of the following situations:
a) When the design is type-finalized OR the production is type-finalized;
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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