SN/T 4675.26-2016 in English

VALID

Determination of turbidity of wine for export―Diffused radiation method

Issued on:2016-12-12
Implemented on:2017-07-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $220.00
$214.00

Standard No:	SN/T 4675.26-2016
Document status:	VALID
Title in English:	Determination of turbidity of wine for export―Diffused radiation method
Title in Chinese:	出口葡萄酒浊度的测定散射光法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2016-12-12
Implemented on:	2017-07-01
Professional Classification:	SN-Import&Export Inspection
Related Keywords:	radiation method introduction analysis standard scattered radiation turbidimeter sparkling wine needs oiv method formazine standard solution
Related Topics:	how to scatter light Scattered light light scattering system wine concentration light scattering system turbidity light Spectrophotometer Turbidity foreign light scattering Definition of astigmatism Applications of Light Scattering light scattering + peak light scattering value Determination of Turbidity UV Light Scattering Applications Turbidimeter Determination of turbidity spectroscopic Scattered light acidity + wine complex scattering light scattering applications Light scattering particle size determination method Turbidity spectrometry Nephelometer scattered light hplc Spectrophotometer Turbidity Nephelometric and Spectrophotometers wine acidity light scattering angle How about the scattering intensity Turbidity Spectrophotometer light and turbidity light scattering peak The principle of 90 degree scattering of light output temperature Spectrophotometer to measure turbidity light scattering photometer Spectrophotometer for Turbidimetry Alcohol and total acidity in wine Photoelasticity of scattered light light scattering applications Scattered photometer Test Light Scattering light scattering applications Photophotometer Scattered Light alcohol spectrophotometry Evaporative light scattering detector does not produce peaks wine opinions Methods for determining wine pretreatment Wine turbidity What are the three methods of measuring turbidity? International Turbidity Measurement How to measure the ingredients in grapes How to measure turbidity using spectroscopy Detection method of copper in wine Bacterial turbidity measurement method What are the methods for measuring turbidity? Spectrophotometric turbidity test Photometric turbidimeter

Introduction

Analysis of the core content of the standard

Scattered radiation turbidimeter

must meet the following technical requirements:

Parameters	Requirements	Comparison with international standards (OIV MA-AS2-08)
Incident light wavelength	620nm±60nm	Same
Measuring angle	90°±2.5°	Same
Random error	≤0.01NTU (0-0.1NTU range)	More stringent

Key Technical Points

Special attention should be paid to the preparation of formazine standard solution:

Use 0.1μm filter membrane to filter secondary water

Hydrazine sulfate and hexamethylenetetramine solution need to react at 25℃±3℃ for 24 hours

The turbidity of the standard stock solution is 400NTU, and the validity period is 4 weeks

Key Operation Steps

The actual test case shows:

Sparkling wine needs to be ultrasonically degassed for 10 minutes

The sample needs to be kept at a constant temperature of 20℃±5℃ for 30 minutes

The measuring cell needs to be rinsed with the test solution 3 times

Recommendations for the implementation of the standard

Technology Evolution Analysis

This standard was developed with reference to the OIV method. The main improvements include:

Added the requirement for 620nm interference filter

Refined the storage conditions of formazin solution

Clearly define the rounding rules for different turbidity ranges

More samples: GB 18306-2015 GB 50021-2001(2009) NB/T 47013.2-2015

Sample only — not a preview of SN/T 4675.26-2016

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