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YY/T 0149-2006: Medical instruments of stainless steel. Test methods of corrosion resistance Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure YY/T 0149: Historical versions
Similar standardsYY/T 0149-2006: Medical instruments of stainless steel. Test methods of corrosion resistance---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/YYT0149-2006YY PHARMACEUTICAL INDUSTRY STANDARD ICS 11.040.30 C 30 Replacing YY/T 0149-1993 Medical instruments of stainless steel - Test methods of corrosion resistance (ISO 13402.1995, Surgical and dental hand instruments – Determination of resistance against autoclaving, corrosion and thermal exposure, MOD) Issued on. JUNE 19, 2006 Implemented on. MAY 1, 2007 Issued by. China Food and Drug Administration Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Classification... 4 4 Preparation... 5 5 Boiling water test method... 5 6 Sodium chloride solution test method... 6 7 Citric acid solution test method... 7 8 Copper sulfate test method... 7 9 Pressure-steaming test method... 9 10 Thermal test method... 9ForewordThis Standard modifies and adopts ISO 13402.1995, Surgical and dental hand instruments – Determination of resistance against autoclaving, corrosion and thermal exposure. The major differences are as follows. -- it adds classification in Clause 3; -- it adds the sodium chloride solution test method in Clause 6; -- it adds the citric acid solution test method in Clause 7; -- it improves the content of test evaluation in 5.4, 6.6, 7.6, 8.6, 9.4 and 10.3. This Standard replaces YY/T 0149-1993, Medical instruments of stainless steel – Test methods of corrosion resistance. Compared with YY/T 0149-1993, the major changes of this Standard are as follows. -- it adds the copper sulfate test method in Clause 8; -- it adds the pressure-steaming test method in Clause 9; -- it adds the autoclave test method in Clause 10. This Standard was proposed and shall be under the jurisdiction of the National Surgical Instruments Standardization Technical Committee. The main drafting organization of this Standard. Shanghai Testing and Inspection Center for Medical Instruments. The main drafters of this Standard. Ni Zhidi, Zheng Huile. This Standard was first issued in December 1993. Medical instruments of stainless steel - Test methods of corrosion resistance1 ScopeThis Standard specifies test methods of corrosion resistance of medical instruments and dental hand instruments made of martensitic and austenitic stainless steels.2 Normative referencesThe provisions in following documents become the provisions of this Standard through reference in this Standard. For dated references, the subsequent amendments (excluding corrigendum) or revisions do not apply to this Standard, however, parties who reach an agreement based on this Standard are encouraged to study if the latest versions of these documents are applicable. For undated references, the latest edition of the referenced document applies. GB/T 6682, Water for analytical laboratory use – Specification and test methods (GB/T 6682-1992, eqv ISO 3639.1987)3 ClassificationThe test methods of this Standard include the boiling water test method, sodium chloride solution test method, citric acid solution test method, copper sulfate test method, autoclave test method and heating test method.4 PreparationThe test-specimen shall be degreased and cleaned up. Acetone or other organic solvents can be used to soak or scrub the test-specimen for degreasing treatment; then use water solution containing 0.3% ~ 1% of soap (or washing powder containing no enzyme) and 2% ~ 3% of trisodium phosphate (Na3PO4·12H2O) for soaking at 60°C ~ 70°C; remove the test-specimen and use water to wash; finally, use grade-3 water to rinse.5 Boiling water test methodGlass beaker or ceramic vessel or suitable corrosion resistant stainless steel vessel. Examine the corrosion on the surface of the test-specimen; its corrosion degrees can be classified into four grades as follows.6 Sodium chloride solution test methodSodium chloride (NaCl, of analytical reagent grade). 6.3 Preparation of sodium chloride solution Use grade-3 water to prepare sodium chloride solution [c(NaCl) = 0.5 mol/L].7 Citric acid solution test method Immerse the test-specimen in boiling water (4.1) in the beaker for 30 min.Examine the corrosion on the surface of the test-specimen; its corrosion degrees are as in 6.6.8 Copper sulfate test methodScrub the test-specimen using soap and warm water; rinse thoroughly in grade-3 water and dry using isopropyl alcohol or 95% ethyl alcohol. Visually examine the trace of copper deposition on the test-specimen; the test- specimen shall be free from copper adhesive layer which cannot be removed by rubbing.9 Pressure-steaming test methodNon-vacuum high pressure sterilizer which is capable of being operated at 134°C ~ 138°C and 0.22 MN·m-2. Examine the corrosion on the surface of the test-specimen; its corrosion degrees are as in 5.4.10 Thermal test methodPlace the test-specimen in the dry heat oven at (175 ± 5)°C and, after allowing the oven to recover its set temperature, leave it for (30 ± 1) min. Examine the corrosion on the surface of the test-specimen; its corrosion degree is as in 5.4. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. |
