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GB/T 15673-2009 English PDF

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Q: Should I purchase the latest version GB/T 15673-2009?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15673-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$239.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 15673-2009: Determination of crude protein in edible mushroom
Status: Obsolete

GB/T 15673: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15673-2009	239	Add to Cart	3 days	Determination of crude protein in edible mushroom	Obsolete
GB/T 15673-1995	199	Add to Cart	2 days	Method for determination of crude protein in edible fungi	Obsolete

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Basic data

Standard ID: GB/T 15673-2009 (GB/T15673-2009)
Description (Translated English): Determination of crude protein in edible mushroom
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: X26
Classification of International Standard: 67.080.20
Word Count Estimation: 6,669
Date of Issue: 2009-10-30
Date of Implementation: 2009-12-01
Older Standard (superseded by this standard): GB/T 15673-1995
Quoted Standard: GB/T 601; GB/T 5009.3; GB/T 6682
Regulation (derived from): National Standard Approval Announcement 2009 No.12 (Total No.152)
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 method for the determination of crude protein content of edible fungi. This standard applies to the determination of crude protein content of edible fungi.

GB/T 15673-2009: Determination of crude protein in edible mushroom

---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.
Determination of crude protein in edible mushroom ICS 67.080.20 X26 National Standards of People's Republic of China Replacing GB/T 15673-1995 Determination of crude protein content of edible fungi Posted 2009-10-30 2009-12-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard replaces GB/T 15673-1995 "Determination of crude protein content of edible fungus." This standard and GB/T 15673-1995 compared to the main changes are as follows. --- According to GB/T 20001.4-2001 "Rules for drafting standards - Part 4. Chemical analysis methods," the original structure of the standard modify; --- Modify the standard English name; --- Increasing the normative references a chapter, delete "GB 12530 Edible sampling method", the "GB 12531 Edible water Determination of points "with the words" GB/T 5009.3 Determination of moisture in foods, "adds" GB/T 6682 water analytical laboratory Specifications and test methods "; --- Sample preparation added to the dry kind of sample size, and the number of clear fresh sample sampling; --- 7.1 sample weighed amount increased from 0.3g ~ 0.5g to 0.5g ~ 1.0g; --- 7.2 adjusted accelerator, the amount of sulfuric acid and Digestion time; --- 7.3 adds constants distillation apparatus and distillation; --- Laboratory equipment commonly used in removing the appliance, increase the automatic azotometer; --- Modify the formula "calculation result" in; --- Original standard "allows poor" to "precision", and another from a chapter, modify the error representation. This standard is proposed and managed by the People's Republic of China Ministry of Agriculture. This standard was drafted. the Ministry of Agriculture edible fungus Quality Supervision and Testing Center (Shanghai), Shanghai Academy of Agricultural Sciences of edible The quality of agricultural products Standards and Testing Technology Research Institute, Shanghai Academy of Agricultural Sciences, Kunming Institute of edible fungi, Tianjin University. The main drafters of this standard. Xingzeng Tao, Wang Hongmei, Han Ye Qi Tan, Guiming Ying, Bank officials, Jiang Pingping, Gu race red, T. (MONTHLY). This standard was first published in 1995 and 2009, the first revision. Determination of crude protein content of edible fungi

1 Scope

This standard specifies the method for the determination of the crude protein content of edible fungi. This standard applies to the determination of the crude protein content of edible fungi.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. Preparation of GB/T 601 chemical reagent standard titration solution Determination of GB/T 5009.3 moisture in foods Laboratory use specifications and test methods GB/T 6682 Analysis Principle 3 Sulfuric acid to destroy the organic matter in the sample, so that nitrogen was converted into ammonium sulfate. Alkali distillation, absorption after boric acid, hydrochloric acid and then titrated Ammonia release, calculate its nitrogen content. Nitrogen content multiplied by the conversion factor of 6.25 to obtain a sample of the crude protein content.

4 Reagents

Unless otherwise stated, use only in the analysis confirmed analytically pure reagents and third grade water GB/T 6682 regulations. 4.1 sulfate. ρ = 1.84g/mL. 4.2 HCl. ρ = 1.18g/mL. 4.3 400g/L sodium hydroxide solution. Weigh 400g of sodium hydroxide (NaOH) was dissolved in 1000mL of distilled water. 4.4 20g/L boric acid solution. Weigh 20g of boric acid (H3BO4) was dissolved in 1000mL of distilled water. 4.5 Accelerator. 600g potassium sulfate (K2SO4) and 100g of copper sulfate (CuSO4 · 5H2O) and mix well after grinding through a pore size of 0.45mm sieve, sealed. Standard 4.6 hydrochloric acid solution Ⅰ. Ba (HCl) = 0.1mol/L, according to GB/T 601 Preparation and calibration. 4.7 standard hydrochloric acid solution Ⅱ. Ba (HCl) = 0.02mol/L, accurate pipetting standard 10mL hydrochloric acid solution Ⅰ (4.6), carbon dioxide-free distilled Distilled water volume to 50mL, now with the current. 4.8 methyl red - bromocresol green mixed indicator. 50mL of 2g/L bromocresol green ethanol solution and 10mL of 2g/L methyl red ethanol The solution was mixed. 4.9 Hydrogen peroxide.

5 Equipment

5.1 Analysis of balance. a sense of the amount of 0.001g. 5.2 Drying oven. Accuracy ± 2 ℃. 5.3 adjustable electric furnace or Digestion. room temperature to 600 ℃. 5.4 Hard Digestion Kjeldahl bottle or tube. 5.5 Constant direct distillation unit. 5.6 semi-micro steam distillation apparatus. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 15673-2009_English be delivered?

Answer: Upon your order, we will start to translate GB/T 15673-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 15673-2009_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 15673-2009_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.

Question 5: Should I purchase the latest version GB/T 15673-2009?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 15673-2009 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.