SN/T 1749-2006 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1749-2006	239	Add to Cart	3 days	Rapid detection of aerobic bacterial count in raw mil. Impedance method	Obsolete

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Basic data

Standard ID: SN/T 1749-2006 (SN/T1749-2006)
Description (Translated English): Rapid detection of aerobic bacterial count in raw mil. Impedance method
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: C53;X16
Word Count Estimation: 6,611
Date of Issue: 2006-01-26
Date of Implementation: 2006-08-16
Quoted Standard: GB/T 4789.2-2003; GB/T 4789.18-2003
Regulation (derived from): Industry Standard Notice 2006 No. 4 (total of 76)
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the total number of colonies in fresh milk rapid determination of the impedance method. This standard applies to all types of milk Determination of total number of colonies.

SN/T 1749-2006: Rapid detection of aerobic bacterial count in raw mil. Impedance method

---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.
Rapid detection of aerobic bacterial count in raw mil.Impedance method People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Rapid determination of total number of colonies in fresh milk Released on.2006-01-26 Implementation of.2006-08-16 People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard is proposed and managed by the National Certification and Accreditation Administration. This standard was drafted. Guangdong Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Gao Dongwei, Li Zhiyong, Yi Minying. This standard is the first industry standard for entry-exit inspection and quarantine. Rapid determination of total number of colonies in fresh milk

1 Scope

This standard specifies the rapid determination method of the impedance of the total number of colonies in fresh milk. This standard applies to the determination of the total number of fresh milk colonies.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this standard, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 4789.2-2003 Food hygiene microbiological examination total number of colonies GB/T 4789.18-2003 Microbiological examination of food hygiene - Examination of milk and dairy products

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 Normal breast secretions from the breasts of healthy mammals that are normally reared, free from infectious diseases and mastitis, without additives and not Extract any ingredients. 3.2 According to the provisions of 3.1 of GB/T 4789.2-2003. 3.3 The time during which the microbial activity causes the impedance change in the medium to be recorded by the instrument, referred to as DT.

4 Principle

Microbial growth and metabolism converts proteins and carbohydrates in the medium into amino acids and lactic acid, causing weak resistance of the medium. The change can be recorded as a DT value by an impedance detecting instrument. There is a correlation between the DT value and the degree of microbial contamination of the sample. Establish a standard curve and regression equation between the DT value and the total number of colonies. Use the standard curve and regression equation and pass the sample The DT value is used to calculate the total number of sample colonies.

5 Equipment and materials

5.1 Impedance detector. BACTOMETER? M64 or M128, or other impedance detector with equivalent detection. 5.2 Reaction cell. used to prepare the reaction plate and used with the impedance detector. 5.3 Micropipette. 20μL ~.200μL. 5.4 Tip head. used with micro pipettes. 5.5 Other equipment and materials. According to Chapter 4 of GB/T 4789.2-2003 and Chapter 3 of GB/T 4789.18-2003. ......

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