GA/T 1939-2021Forensic sciences - Examination methods for electric marks - Scanning electron microscopy/energy dispersive X-ray spectrometry (English PDF)
法庭科学 电流斑检验 扫描电子显微镜 X射线能谱法
This is a limited preview
Buy now to download the full PDF (9 pages)
Need quotation for your management?
Get a formal quotation for GA/T 1939-2021 in 30 minutes.
Issued by
Ministry of Public Security
Level / Type
National · Recommended
Issue date
October 14, 2021
Implementation date
May 1, 2022
Scope
GA/T 1939-2021 is the English-translated version of 法庭科学 电流斑检验 扫描电子显微镜 X射线能谱法.
GA/T 1939-2021 — This document specifies a scanning electron microscope/X-ray spectrometer inspection method for current spots in the field of forensic science.
This document is applicable to metal element composition inspection, metal particle morphology inspection, and metal element composition ratio of electric spot skin in the field of forensic science for inspection, other fields can also refer to it.
Found what you need?
Document preview — GA/T 1939-2021
National Standard of the People's Republic of China
- ICS
- 13.310
- Classification
- A 92
Issued by: Ministry of Public Security
Contents
- Document data1
Document data
International classification (ICS): 13.310.
Chinese classification (CCS): A92.
Estimated length of the Chinese original: 13,190 words.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.
How to Download GA/T 1939-2021
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
GA/T 2322-2025 — Forensic sciences-Code of practice for latent fingerprint development by superglue of humidity and heat
GA/T 2323-2025 — Forensic sciences-Examination methods for thiosulfate ions in biologicasamples - LC-MS
GA/T 2324-2025 — Forensic sciences-Examination methods for 13 shellfish toxins including saxitoxin in biological samples - LC-MS
Secure payment via Stripe
Payments accepted
GA/T 1939-2021
$150.00