GB/T 8618-2021 in English

VALID

Sampling methods of the main products in salt making industry

Issued on:2021-12-31
Implemented on:2022-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $220.00
$214.00

Standard No:	GB/T 8618-2021
Document status:	VALID
Title in English:	Sampling methods of the main products in salt making industry
Title in Chinese:	制盐工业主要产品取样方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2021-12-31
Implemented on:	2022-07-01
Superseding:	GB/T 8618-2001 Sampling methods of the main products in the salt industry
ICS Classification:	71.100.01-Products of the chemical industry in general
Chinese Classification:	X35-Salt production in general
Professional Classification:	GB-National Standard
Related Keywords:	salt making industry introduction core changes edible salt industrial salt refined salt ＞4mm iodized salt
Related Topics:	Sample desalting sample salt Product loading Micro Sample Desalting Organic sample desalting Salt industry Major components in the sample Main reagent preparation method Main reagent preparation method 0 ms+ sample salt Semi-prepared sample desalting Sample Preparation Desalting dsc sample preparation requirements Desalting from samples Sample Salt Method food industry salt Sample desalting Mass Spec Sample Desalting gpc sample preparation method MS sample salt Sample hydrochloric acid ms sample salt MS samples, desalted Large Sample Desalting Quartering requirements for samples Divided sample gpc sample preparation method product sample box Sample extraction method The main method of sample pretreatment product box sample GC sample preparation method mainstream products GC sample preparation method TEM sample preparation method replica method Industry samples Salt industry gb/t8618 Note sample method Main components of sample gas Sample preparation of agricultural products gb 8618 The mass spectrometer mainly detects the The main method of calibration Method Sample Requirements tga sample preparation method ms sample preparation requirements Desalted samples Already in the method mainly there are Industrial product salt spray test Owner Sample Preparation Products Sample Preparation Equipment and Tools Sample Preparation Products dma sample preparation method GBT8618 GB/T 8618-2001 GB/T 8618-2021 Industrial Motherboard Sampling method Three-point sampling method for production measurement Main methods of peptide preparation kpfm sample preparation requirements How to prepare potassium Preparation method of salt bridge How to make salt bridge Operating points of liquid film sample preparation method The main pretreatment methods for food inspection samples include What are the processing methods and main processed products of petroleum? Traditional sample extraction methods Food sample sampling methods The main methods for preparing infrared samples are salt making Sample preparation method to investigate parallel sample requirements How to make potassium Standard method for sample preparation of agricultural products Thermal design of communication products mainly The main method of burning Mainstream extraction method of sodium heparin Liquid sample NMR sample preparation method Main methods of food sample purification Main methods of environmental sample pretreatment gbt8618-2001 Particle size sampling method Sampling methods for chemical products

《GB/T 8618-2021制盐工业主要产品取样方法》由TC295（全国盐业标准化技术委员会）归口，主管部门为中国轻工业联合会。

Introduction

Core changes in the standard revision

Revision dimensions	2001 version	2021 version
Scope of application	Limited to the delivery stage	Extended to the production stage
Definition of terms	16 terms	Simplified to 8 core terms
Sample container	No explicit requirement	Required to be sealable

Quality fluctuation classification system

Taking refined salt as an example, when the quality fluctuation standard deviation (Sw) is ≤0.15%, it is applicable to the "small" category. In actual production, it can be determined by the following steps:

Continuously collect production data of 5 batches or more
Calculate according to the formula Sw=√[∑(ti-t)²/(n-1)]
Determine the classification by referring to Table 1

Key sampling technical specifications

1. Sampling of bagged edible salt

Packing specifications	Sampling method	Sample size
≤2000g	Directly take the whole bag	Determine the quantity according to Table 2
＞2000g	Insert the sampler in the middle of the bag	200g per portion

2. Sampling of industrial bromine jars

Use the cube root calculation method: number of samples = ³√total number of jars (round up), use a glass sampler to insert it into 2/3 of the depth of the jar, and each portion is 50mL.

Implementation recommendations

Corporate response strategies:

Establish a quality fluctuation database and update the Sw value regularly
Automatically apply "large" sampling to solar salt with a particle size of ＞4mm
Iodized salt sampling must ensure coverage of 9 azimuth points

Technology evolution analysis

This revision reflects three major technological advances:

Refine classification: Separate the fluctuation standards of industrial salt and edible salt
Operation standardization: Clarify the coordinates of the sampling points for trucks/lorries (see Figures 1 and 2)
Risk control: Increase the sealing requirements for spare samples

More samples: QC/T 942-2021 JJG 21-2008 JC/T 2453-2018

Sample only — not a preview of GB/T 8618-2021

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