GA/T 1702-2019 English PDFUS$329.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GA/T 1702-2019: Forensic sciences - Paper identification - Staining Status: Valid
Basic dataStandard ID: GA/T 1702-2019 (GA/T1702-2019)Description (Translated English): Forensic sciences - Paper identification - Staining Sector / Industry: Public Security (Police) Industry Standard (Recommended) Classification of Chinese Standard: A92 Classification of International Standard: 13.310 Word Count Estimation: 14,174 Date of Issue: 2019 Date of Implementation: 2019-12-01 Issuing agency(ies): Ministry of Public Security GA/T 1702-2019: Forensic sciences - Paper identification - Staining---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 - Paper identification - Staining ICS 13.310 A92 Public Safety Industry Standard of the People's Republic of China Forensic Science Paper Inspection Staining Agent Act 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. This standard was proposed by the Sub-Technical Committee of the National Criminal Technology Standardization Technical Committee (SAC/TC179/SC10) and Be in charge. This standard was drafted by. Beijing Municipal Public Security Bureau, Physical Evidence Appraisal Center of the Ministry of Public Security. The main drafters of this standard. Zhang Jianzhou, Wang Xin, Huang Yan, Liang Luning. Forensic Science Paper Inspection Staining Agent Act1 ScopeThis standard specifies the staining method for paper inspection in the field of forensic science. This standard applies to paper inspection and identification in the field of forensic science.2 Selection of dyes2.1 For the inspection of fiber composition, it is recommended to use Herzberg stain (Herzberg stain). 2.2 For the inspection of the pulping method, it is recommended to use Herzberg stain (Herzberg stain) or Graff "C" stain (Graf "C" stain). 2.3 Lofton-Merritt stain (Lofton-Merritt stain), Seleger stain (Schergel stain), Wilson stain Agent (Wilson stain) and Alexander stain (Alexander stain) 4 kinds of stains, it is not recommended to be used alone, it can be used as a pair Confirmation and supplement of the test results of Herzberg stain (Hertzberg stain) and Graff "C" stain (Graf "C" stain).3 Preparation requirements3.1 Analytical reagents and distilled or deionized water should be used. 3.2 The stain should be kept in a brown reagent bottle and placed in a dark place. 3.3 It is recommended to reconstitute every 2 months to ensure the dyeing effect. 4 Herzberg stain (Herzberg stain) 4.1 Preparation method 4.1.1 Solution A---saturated zinc chloride solution at room temperature. add zinc chloride (ZnCl2) to 100mL warm water until the remaining solute is not Re-dissolve, let it cool to room temperature, and observe the appearance of zinc chloride crystals, store this solution in a brown reagent bottle for future use. 4.1.2 Solution B --- iodine solution. mix 2.1g potassium iodide (KI) and 0.1g iodine (I2), add 5mL water drop by drop, stir while adding to make Its mixed. If iodine remains and is not dissolved, the solution may be discarded because water is added too quickly. 4.1.3 Mix 15mL of solution A, 1mL of water and all of solution B, and let stand for more than 6h to allow any precipitate to settle, gently Decant the supernatant into a brown dropper bottle and add a small piece of iodine (I2). Before using the new dye, apply a known fiber inspection. Cotton fiber should be wine red, if it is light blue, it means that the solution is too concentrated and should be added Dilute with very little water. Chemical pulp fiber should be blue to light blue purple, if it is light red, it means that the concentration of zinc chloride is too low, and should be added less Adjust the amount of zinc chloride crystal tablets. 4.2 Preparation and inspection of inspection samples 4.2.1 Extract paper pattern Paper patterns should be extracted from the corners and blanks that do not affect the graphics. An inspection material or sample should take at least 2 paper samples from different parts (not less than 2mm × 2mm). Under special circumstances, it can be increased accordingly ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GA/T 1702-2019_English be delivered?Answer: Upon your order, we will start to translate GA/T 1702-2019_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 1702-2019_English with my colleagues?Answer: Yes. The purchased PDF of GA/T 1702-2019_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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