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Fire Assay Lead Foil is a specialized high-purity lead product designed for two core applications: fire assay analysis and radiation shielding. Manufactured with 99.99% pure assay-grade lead (free of gold, silver, and low bismuth content), it complies with ISO11426 standards for gold determination in jewelry alloys via ash blowing. Beyond analytical use, its high density (11.34g/cm³) and flexibility make it a top choice for radiation shielding in medical, industrial, and research settings. Crafted from lead ingots with a base purity of ≥99.994%, this lead foil balances precision for laboratory work with durability for shielding applications, catering to both scientific and industrial needs.
Parameter | Details |
Thickness Range | 0.1mm - 0.15mm |
Material Purity | 99.99% (assay-grade lead, gold/silver-free) |
Density | 11.34g/cm³ |
Bismuth Content | Low (ensures analytical accuracy) |
Compliance Standard | ISO11426 (for fire assay gold determination) |
Core Properties | Flexible, malleable, radiation-absorbent, corrosion-resistant |
Form | Foil sheet (custom widths available) |
| Pb (Lead) | 99,99% |
| Sn (Tin) | 0,010 % max |
| Sb (Antimony) | 0,001 % max |
| Cu (Copper) | 0,001 % max |
| Fe (Iron) | 0,002 % max |
| Zn (Zinc) | 0,001 % max |
| Cd (Cadmium) | 0,001 % max |
| Bi (Bismuth) | 0,005 % max |
| As (Arsenic) | 0,002 % max |
| Ni (Nickel) | 0,001 % max |
| Ag (Silver) | 0,001 % max |
| Al (Aluminium) | 0,001 % max |
| In (Indium) | = |
| Au (Gold) | 0,001 % max |
With 99.99% purity and no gold/silver contamination, it delivers reliable results in fire assay ash blowing. Low bismuth content eliminates interference, making it a trusted tool for jewelry alloy analysis and geological sample testing.
Its high density enables effective absorption of X-rays, gamma rays, and ionizing radiation. It provides lightweight yet robust shielding compared to bulkier lead products, ideal for space-constrained environments.
The foil is soft and easy to bend, fold, or shape, adhering to complex surfaces such as equipment enclosures, laboratory instruments, and curved shielding structures. It can be cut to precise sizes without cracking or degrading.
It resists corrosion from chemicals like sulfuric acid and phosphoric acid, making it suitable for laboratory fume hoods, industrial flaw detection setups, and chemical processing environments.
Used in jewelry manufacturing and mining laboratories for ash blowing in fire assay methods. It facilitates accurate gold and silver determination in alloys and ore samples, complying with ISO11426 standards.
Ideal for analytical chemistry labs requiring contamination-free lead foil for precision testing.
Fabricated into personal protective equipment (PPE) such as lead aprons, gloves, and thyroid shields for healthcare workers.
Lined inside X-ray/CT room walls, doors, and observation windows to block radiation leakage, protecting patients and staff.
Used as shielding material in nuclear power plants, industrial flaw detection (weld testing), and radioactive laboratories.
Packages and shields radioactive samples or sources in research institutions, preventing radiation exposure.
Installed in automobiles, precision instruments, and construction projects to block sound transmission and reduce vibration.
Used in battery manufacturing for lead-acid battery plates and in electronics for electromagnetic interference (EMI) shielding.
When handling the foil, wear gloves to avoid direct skin contact. Wash hands thoroughly with soap and water after use. Avoid generating dust or smoke (e.g., during cutting or heating) to prevent inhalation of lead particles. Store in a dry, ventilated area away from food and beverages.
Yes. Used foil is classified as hazardous waste and must be recycled via specialized lead recycling facilities. Do not discard it in regular trash, as lead can contaminate soil and water. Proper recycling recovers valuable lead for reuse, aligning with eco-friendly practices.
Absolutely. Its high density and conductive properties make it effective for EMI shielding in electronic devices, such as circuit boards, medical equipment, and communication tools. It blocks unwanted electromagnetic signals, ensuring device performance and reliability.
