This standard specifies the hygienic inspection method for rubber hoses for food. This standard applies to pure rubber hoses and reinforced rubber hoses (cloth-reinforced hoses) made of high-quality rubber as the main raw material, with certain additives, and a specific formula. Rubber hoses for food can be used to transport or pump liquid condiments such as soy sauce, vinegar, and alcohol, as well as various beverages, maltose, and other non-greasy liquid foods. GB/T 5009.79-2003 Hygienic inspection method for rubber hoses for food GB/T5009.79-2003 standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
GB/T5009.79—2003
GB11332339
Hygienic analysis method of rubber hose for food use
Promulgated on August 11, 2003
Ministry of Health of the People's Republic of China
Standardization Administration of the People's Republic of China
Implementation on January 1, 2004
TBT5009.79—2003
This standard replaces (311.112·6 Hygienic analysis method of rubber hose for food use) This standard needs to be modified compared with R33
1989!
According to B: T2931.4-201&Standard abbreviations, see Part 1: Chemical analysis methods. The original standard has been modified.
Technical director of the People's Republic of China, Shanghai Food and Health Supervision and Inspection Institute, Shanghai Duqiang Rubber Factory, Shanghai Xinye Weiyuan War Factory. The drafters of this standard are Zhu Wangyan, Cheng Ru, Liu Shishen, Zheng Andian, and Huang Li. The original standard was revised in 19 Release. This is the first revision. 575
1 Scope
Sanitary inspection method of rubber hose for food
6 Standard stipulates "Sanitary inspection method for rubber hose for food use, GB/T5009.79-2003
Standard certification uses high-quality and stable materials as the main material, with certain auxiliary components, and is processed into natural rubber hoses and increased type rubber hoses (light). Food hoses can be used to transport or pull sauces, liquid condiments, various beverages, sugar-free and other non-fat products
? Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. All subsequent amendments (excluding the contents of the survey) are not applicable to this standard. However, the research and production of this standard according to the agreement is not applicable to this standard. These documents are the latest versions. For referenced documents without a date, their pre-release versions apply to this standard GB/T 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303 9.6C-2303
3.2.1 According to formula (1), cut off a certain length of pipe and use a 2% concentration of cleaning agent to clean the inside of the pipe. When cleaning, push the brush in and out once, which counts as a total of 3.2.2 After the selection is completed, rinse with tap water, brushing side by side, and brushing for 10 times in between. After rinsing with tap water, rinse with water, and then use 3.3 diffuse foaming equipment
3.3. 1. Soak in water and 45% acetic acid at 69℃ for 2h and then soak until the temperature is ≤60℃. Then add 1% ethane and 65% 7.5% ethanol to the sample solution and record its volume (mL). If the reported volume after soaking is compared with that in the sample solution, rinse the inner wall with the soaking liquid and wait until the sample volume reaches the specified value. GB/T 5009.79—2003 4.1 Appearance inspection Color is normal. No abnormality: 4.2 Hair residue inspection According to the fifth operation of GB/T 5009.50-2003.
4.3 Consumption of potassium permanganate
Resume the operation in Chapter 4 of GBT:CG9,-2n.
According to GB/T=C90.54-2003, Chapter 9 Single Operation: 4.5 Metals
According to GB/T 5133,-20, Chapter 5 Expression of results
5.1 According to the data value X (g/L) measured by the above test method or (2), (3), convert it into the range of various indicators in 2L/cm standard liquid.
5.2 The calculation of conversion coefficient K is shown in formula (2):
K.---The actual immersion amount in the test tube, the unit is drop (m) V---the amount of equal daily force surface square centimeters per 2m, the unit is milli:mI). 5.3 Test result K, according to formula (3) H sieve
K, -KXX
where:
frequency calculated into 2ml./cn soaking liquid service index and. Unit is whole gram per.nug/.) conversion system: wwW.bzxz.Net
original leaching filtrate mouth each index content, unit is mg per and (/L). -(2)
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