GA/T 1684-2019 English PDFUS$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GA/T 1684-2019: Forensic sciences--Methods for judgement of muzzle-to-target distance by making element Cu or Pb visible Status: Valid
Basic dataStandard ID: GA/T 1684-2019 (GA/T1684-2019)Description (Translated English): Forensic sciences--Methods for judgement of muzzle-to-target distance by making element Cu or Pb visible Sector / Industry: Public Security (Police) Industry Standard (Recommended) Classification of Chinese Standard: A92 Classification of International Standard: 13.310 Word Count Estimation: 6,691 Date of Issue: 2019 Date of Implementation: 2019-12-01 Issuing agency(ies): Ministry of Public Security GA/T 1684-2019: Forensic sciences--Methods for judgement of muzzle-to-target distance by making element Cu or Pb visible---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. Forensic sciences--Methods for judgement of muzzle-to-target distance by making element Cu or Pb visible ICS 13.310 A92 Public Safety Industry Standards of the People's Republic of China Judgment of copper and lead elements appearing in forensic textiles Method of shooting distance Published on October 14,.2019 2019-12-01 Implementation Issued by the Ministry of Public Security of the People's Republic of China ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some content of this document may involve patents. The issuer of this document does not assume responsibility for identifying these patents. This standard is under the jurisdiction of the National Criminal Technology Standardization Technical Committee Trace Inspection Sub-Technical Committee (SAC/TC179/SC9). This standard was drafted by. Physical Evidence Appraisal Center of the Ministry of Public Security. The main drafters of this standard. Bao Liyin, Ma Xinhe, Wang Xiaolin, Li Yihan. Judgment of copper and lead elements appearing in forensic textiles Method of shooting distance1 ScopeThis standard stipulates the reagent formulations, operating procedures and procedures for judging the shooting distance of copper and lead elements appearing on textiles in forensic scientific gun-related cases Judgment method. This standard applies to the judgment of the firing distance when textiles are fired by a clear type of firearm at close range (within 1m).2 Requirements for inspection materials2.1 During the period between the case and the inspection, there was no qualitative change in the textile materials. 2.2 The textile samples are not contaminated. 3 Laboratory requirements, equipment and reagents 3.1 Laboratory requirements With ventilation and acid-proof conditions, non-destructive disinfection of the test materials is possible. 3.2 Equipment 3.2.1 Digital cameras or optical cameras with optical zoom function of more than 5 million pixels. 3.2.2 Photo paper glazing machine. 3.2.3 Magnified photo paper. No. 2 glossy magnified photo paper is soaked in the fixing solution for 30 minutes without exposure, rinsed and polished, press 12cm× The 12cm size is cut for use. The prepared photo paper should be kept clean and should not come into contact with unclean items to avoid contamination. 3.2.4 Cover plate, tweezers, glass rod, drip bottle, sink. 3.3 Reagents 3.3.1 Pretreatment fluids include. a).200mL of 12% ammonia solution; b).200mL of 25% acetic acid solution. 3.3.2 Color developing liquid includes. a) Red acid (dithioglyoxamide) methanol saturated solution; b) 0.2% sodium rosinate aqueous solution (prepared before use).4 Operation steps4.1 Selection of pretreatment and inspection methods Non-destructive disinfection of the inspection materials. If the shooting holes in the textile are caused by the use of copper-clad warheads, the copper element should be used for inspection method. If the shooting holes in the textile are caused by the use of armor-free lead warheads, the lead element test method should be used. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GA/T 1684-2019_English be delivered?Answer: Upon your order, we will start to translate GA/T 1684-2019_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 GA/T 1684-2019_English with my colleagues?Answer: Yes. The purchased PDF of GA/T 1684-2019_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. 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