GB/T 35887-2018 in English

VALID

Analysis method of white granulated sugar

Issued on:2018-02-06
Implemented on:2018-09-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $250.00
$243.00

Standard No:	GB/T 35887-2018
Document status:	VALID
Title in English:	Analysis method of white granulated sugar
Title in Chinese:	白砂糖试验方法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-02-06
Implemented on:	2018-09-01
ICS Classification:	67.180-Sugar. Sugar products. Starch
Chinese Classification:	X30-Sugar refining and sugar products in general
Professional Classification:	GB-National Standard
Related Keywords:	sugar introduction analysis white sugar sugar determination standard sugar solution concentration laser sugar detector
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《GB/T 35887-2018白砂糖试验方法》由TC373（全国制糖标准化技术委员会）归口，主管部门为中国轻工业联合会。

Introduction

Analysis of the core content of the standard

Test items	Method principle	Key instruments	Accuracy requirements
Granularity	Sieving method	Sieve shaker, test sieve	±0.1g
Sucrose analysis	Polarimetry	Sugar detector, Polarimetry observation tube	0.05°Z
Color value	Spectrophotometry	Spectrophotometer, class=instrument>Membrane filter	±1IU

Key technical points

1. Innovation in sucrose content determination

The international sugar scale (°Z) is used to replace the traditional sugar content °S, and the conversion coefficient is 0.99971. The standard specifies the conversion of optical rotation values under three light source wavelengths:

Green mercury light (546nm): α=40.777°±0.001°
Yellow sodium light (589nm): α=34.626°±0.001°
Helium-neon laser (633nm): α=29.751°±0.001°

2. Conductivity ash detection optimization

Using 31.3g/100mL standard sugar solution concentration, temperature correction formula:

C_20.0 = C_t/[1+0.026(t-20)]

Refined white sugar requires the test water conductivity to be <2μS/cm

Solutions to implementation difficulties

Case: Abnormal handling of reducing sugar determination

When the deviation of the Ofnal method determination result is ＞15%, it is necessary to check:

The reaction time of iodine solution is strictly controlled within 2min±5s
Determination of the starting time of boiling (based on the appearance of a large number of bubbles on the liquid surface)
Use the correction table in Appendix A to compensate for the reducing effect of sucrose

Analysis of standard evolution

Main changes in the 2018 version:

Added calibration specifications for laser sugar detector
Revised the pH requirement for color value detection buffer solution to 7.00±0.02
Updated the filter membrane pore size requirement for water-insoluble impurities detection (≤40μm)

More samples: YD/T 3934-2021 GB 50021-2001(2009) JJG 21-2008

Sample only — not a preview of GB/T 35887-2018