GB/T 39307-2020 in English

VALID

Fluorescent whitening agents—Determination of shade and relative whiteness—Plastic coloring

Issued on:2020-11-19
Implemented on:2021-10-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $60.00
$59.00

Standard No:	GB/T 39307-2020
Document status:	VALID
Title in English:	Fluorescent whitening agents—Determination of shade and relative whiteness—Plastic coloring
Title in Chinese:	荧光增白剂色光和增白强度的测定塑料着色法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2020-11-19
Implemented on:	2021-10-01
ICS Classification:	71.100.01-Products of the chemical industry in general
Chinese Classification:	G55-Basic standards and general methods for dye
Professional Classification:	GB-National Standard
Related Keywords:	relative whiteness plastic agents determination traditional textile determination methods fluorescent brighteners plastic products
Related Topics:	Fluorescent whitening agent Enhance tension agent enzyme enhancer X-ray fluorescence sensitization Relative intensity of fluorescence peaks Fluorescence intensity detection Fluorescence intensity detection Fluorescence principle fluorescent color how fluorescence enhancement Pyrene fluorescence intensity ratio How to detect fluorescence intensity fluorescent fuel Fluorescence Standard Fluorescent Cuvette Intensity of fluorescence peak sea color light color sea light total fluorescence intensity absolute fluorescence intensity How about the fluorescence intensity Fluorescence intensity 0 Fluorescence colorimeter How to enhance fluorescence iso colorant testing method Fluorescent agent level Three-dimensional fluorescence peak intensity colorimetric fluorescence Fluorescence colorimeter multicolor fluorescence single color multiple fluorescence Cadmium signal enhancer Brightener series Cadmium signal enhancer pcr enhancer Colorimeter Whiteboard brightener Fluorescence peak intensity pcr enhancer Fluorescence measurement without peaks Fluorescence Cube Fluorometer blank Fluorophotometry Food How to Measure Fluorescence Intensity Fluorescence intensity and relative fluorescence intensity Fluorescent temperature Fluorescent agent Fluorescent agent Anthracene fluorescence intensity how fluorescence intensity Whitening agent detection method plastic coloring light color light color Autofluorescence intensity Enhancer analysis Enhancer Analysis The strength of the collector How to Measure Fluorescence Intensity Plasticizer Moisture Fluorescence photometry Chroma Elixir Whiteness value Whitening agent detection method Whiteness value whitening Fluorescent Microcuvettes illegal coloring agent Principle of fluorescence method flow + fluorescence intensity Fluorescent color name Fluorescence peak intensity Luminosity increase Measure the concentration of fluorescence How to measure fluorescence intensity White Spectrum Standard light white light Increased edition Spectrophotometry and Chromatography Brightness meter Plastic fluorescent agent Fluorescent agent for plastic products Chromatic fluorescence relative fluorescence intensity Luminosity of fluorescent agent Protein Determination Spectrophotometry What is the fluorescence intensity Fluorescent spot color flow fluorescence intensity light color Pyrene fluorescence intensity flow + fluorescence intensity Color Meter + Whiteness Fluorescence photometry white+ Fluorescent color detection Fluorescence with temperature How to measure fluorescence intensity Fluorescence Blank Peak monochromatic fluorescence Brightness machine What does fluorescence intensity measure? electroplating white Fluorescent spot color flow fluorescence intensity fluorescence amplification peak plasticizer fruit fluorescence enhancement Fluorescent whitening agent v6 Intrinsic fluorescence intensity Fluorescent graduation agent High-grade colorant white plastic coloring method plastic coloring agent spectrum of white light multicolor fluorescence Very strong fluorescence plastic coloring colorant pigment Detection of Fluorescence Intensity coloring method white plastic Anthracene fluorescence enhancement Dispersive white light white plastic test GBT39307 GB/T 39307-2020 flow fluorescence intensity plastic spectrophotometer fluorescence What is the whiteness of a standard whiteboard using a whiteness meter? Average fluorescence intensity MFI plot Fluorescent cross-color Fluorescence quantitative PCR fluorescence intensity is low How to distinguish fluorescent whitening agents MFI fluorescence intensity Principle of pi fluorescent staining method zsgreen fluorescent protein white measurement The luminescence principle of fluorescent proteins Pulp coloring and whitening Fluorescent whitening agent testing standards and basis Normalized fluorescence intensity Fluorescence intensity test method Determination method of green fluorescent protein Method for measuring fluorescence intensity using a microplate reader Plasticizer implementation Flow fluorescence staining method Fluorescence requirements for plastic products Fluorescent microplate reader measuring fluorescence intensity standard limits Fluorescence staining identification Spectrometer experimental blank intensity Food fluorescent whitening agent limits Calcium Fluorescent White Staining Method Methods for preparing solutions based on fluorescence intensity Fluorescent Color European Test Fluorescent whitening agent test method Fluorescent dyeing method is not used Method for measuring fluorescence intensity using microplate reader Fabric fluorescent agent detection Limited amount of fluorescent agent for clothing whitening Fabric fluorescence test The difference between reagent blank and method blank fluorescent plastic execution Method for measuring fluorescence intensity data using a microplate reader

《GB/T 39307-2020荧光增白剂色光和增白强度的测定塑料着色法》由TC134（全国染料标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。

Introduction

Technical background of the standard

This standard is developed as a supplementary method to GB/T 9338-2008 for fluorescent brighteners used in plastic products, solving the applicability problem of traditional textile determination methods in polymer matrices. The 2020 revision added injection molding process parameters (185℃/5min) and special requirements for PVC plastic particles.

Core Measurement Principles

Elements	Standard Sample Comparison Method	Instrumental Measurement Method
Intensity Reference	Standard Sample is Set to 100 Points	Whiteness Value Ratio Calculation
Color Light Evaluation	Visual Color Comparison	ΔL/Δa/Δb Item Control
Allow Deviation	±1 Point	In Compliance with GB/T 9338

Key Operation Points

Case: A PVC pipe factory found that when the fluorescent agent addition amount was greater than 0.2%, the resin would degrade. The 0.01%-0.2% gradient verification recommended by this standard can avoid the problem of thermal stability of the material.

Attention should be paid during the board making process: Mixed material uniformity directly affects the measurement accuracy. It is recommended to use a special mixing bottle for three-dimensional mixing; insufficient cooling time will lead to a high whiteness value, and room temperature equilibrium must be ensured for more than 30 minutes.

Implementation suggestions

1. Standard sample management: It is recommended that enterprises establish a standard sample library and seal it together with suppliers according to clause 6.1 of the standard

2. Equipment selection: and whiteness meter should comply with the requirements of GB/T 9338. It is recommended to calibrate with a standard white plate every month

3. Data recording: The original data should be completely saved according to the requirements of Chapter 7, with special attention to the injection molding temperature fluctuation record

More samples: JC/T 2453-2018 JJG 21-2008 DL/T 368-2010

Sample only — not a preview of GB/T 39307-2020

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