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GB/T 8311-2013: Tea -- Determination of dust and broken content
Status: Valid GB/T 8311: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 8311-2013 | English | 139 |
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3 days [Need to translate]
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Tea -- Determination of dust and broken content
| Valid |
GB/T 8311-2013
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| GB/T 8311-2002 | English | 239 |
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Tea -- Determination of dust and broken tea content
| Obsolete |
GB/T 8311-2002
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| GB/T 8311-1987 | English | 199 |
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Tea--Determination of dust and broken tea content
| Obsolete |
GB/T 8311-1987
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PDF similar to GB/T 8311-2013
Basic data | Standard ID | GB/T 8311-2013 (GB/T8311-2013) | | Description (Translated English) | Tea -- Determination of dust and broken content | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | X55 | | Classification of International Standard | 67.140.10 | | Word Count Estimation | 6,688 | | Older Standard (superseded by this standard) | GB/T 8311-2002 | | Quoted Standard | GB/T 8302 | | Regulation (derived from) | National Standards Bulletin 2013 No. 27 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the instruments and equipment, sample preparation, calculations and test reports on tea powder and broken tea determination methods and results of operations. This standard applies to the determination of tea powder and broken tea | GB/T 8311-2013: Tea -- Determination of dust and broken content---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Tea. Determination of dust and broken content
ICS 67.140.10
X55
National Standards of People's Republic of China
Replacing GB/T 8311-2002
Determination of tea powder and broken tea content
Issued on. 2013-12-31
2014-06-22 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB/T 8311-2002 "broken tea tea powder and determination." This standard compared with GB/T 8311-2002, the main
To technical changes are as follows.
--- The test sieve Maocha and refined tea combined using the same parameters and the same electric screening machine parameters;
--- Screening machine provides electric motor speed and swing amplitude tolerance;
--- Of Chapter 4 of the Notes 1 and 2 has been modified.
The standard proposed by China Federation of Supply and Marketing Cooperatives.
This standard by the National Standardization Technical Committee of tea (SAC/TC339) centralized.
This standard was drafted. China Federation of Supply and Marketing Cooperatives Hangzhou Tea Research Institute.
The main drafters of this standard. Zhao Yuxiang, Zouxin Wu, Weng Kun, Jin Yuxia, Zhang Yali.
GB/T 8311 release of the previous version of the case.
--- GB/T 8311-1987, GB/T 8311-2002.
Determination of tea powder and broken tea content
1 Scope
This standard specifies the tea powder and broken tea content measurement instruments and appliances, sample preparation, methods of operation and the results of calculations and test
Inspection reports.
This standard applies to the determination of tea powder and broken tea content.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 8302 sampling tea
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1
Powder and broken tea dustandbrokentea
According to certain rules, with a predetermined speed and aperture sieve, screening a variety of tea in the sample under the sieve.
4 apparatus and appliances
4.1 sampler and sub-sub-template or sample plate. plate 2 Corner opened a gap.
4.2 Electric Screen. speed 200r/min ± 10r/min, swirling amplitude 60mm ± 3mm.
4.3 Inspection screen. copper braid square hole sieve, sieve diameter 200mm, with the bottom screen and the screen cover.
4.3.1 Powder Sieve.
a) aperture 0.63mm (for bars, round tea);
b) aperture 0.45mm (for tea and coarse fractal shaped tea);
c) aperture 0.23mm (for sheet-shaped tea);
d) aperture 0.18mm (used at the end shaped tea).
4.3.2 broken tea sieve.
a) aperture 1.25mm (for bars, round tea);
b) aperture 1.60mm (for coarse-shaped tea).
Note 1. The article, refers to a circular tea time tea, Souchong tea, the broken black leaf tea, Roasted, Hongqing, Gunpowder and other tight end strip, round tea.
Note 2. The crude shaped tea Tieguanyin means, color species, narcissus, white peony, tribute eyebrow, drying green, Pu'er tea, thick, loose tea form.
5 Sample Preparation
5.1 Sampling
According to the provisions of GB/T 8302 sampling.
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