![]() ![]() OSHA is replacing its limit for fused silica, which is expressed as the formula presented above, with a numerically equivalent limit of 0.1 mg/m 3 as total respirable silica dust the Agency is establishing this limit to simplify employee exposure monitoring. Uncoated 2 x 4 mm solid Fused Silica etalons are very small devices that our customers usually cement on one end to a holder. Actual angles may vary depending on wavelength or degrees of collimation. LightMachinery’s Fused Silica etalons are available uncoated in rectangular shapes with dimensions of 2 x 4 or 5 x 5 mm or with dielectric coatings in circular shapes and 25.4 mm diameter. 8-47, Table N6B) does not concur with the final rule’s limit and recommends a separate 6(b) rulemaking for fused silica, which NIOSH considers a potential occupational carcinogen. Divergence angle measured with collimated laser, 633nm. Thus, this revision does not represent a re-evaluation of the toxicity data for fused silica. The ACGIH recommends an 8-hour TWA limit of 0.1 mg/m 3, measured as free silica the ACGIH adopted this limit in 1985 to simplify the monitoring of quartz dust concentrations. This limit corresponds to a respirable quartz concentration ranging from 0.08 to 0.1 mg/m 3, measured as free silica. OSHA’s former limit for quartz dust was the formula 10 mg/m 3/ % SiO(2) + 2, measured as total respirable dust. Exposure to fused silica has long been known to cause the fibrogenic lung disease, silicosis. As such, it was formerly covered by OSHA’s limit for quartz (Table Z-3). Circuit Court of Appeals and the limits are not currently in force.įused silica is a colorless, odorless solid that is a form of quartz. From the prototype to the serial production of complex special components made of individually optimized materials - QSIL offers an extensive product and material portfolio.OSHA comments from the JanuFinal Rule on Air Contaminants Project extracted from 54FR2332 et. QSIL is the specialist when it comes to advanced solutions made from high-performance materials, fused silica and engineered ceramics. ROBU Glasfilter-Geräte GmbH / Schützenstraße 13 / 57644 Hattert / Germany Taicang Zhongyu Science Park / No.111 N.Dongting Rd of Taicang / Taicang City Jiangsu Province 215400 / China Starck Specialty Materials (Taicang) Co., Ltd. Ltd / 1 Harris Rd / Calne, Wiltshire, SN11 9PT / United Kingdom QSIL Metals Hermsdorf GmbH / Robert-Friese-Straße 4 / 07629 Hermsdorf / Germany QSIL Ingenieurkeramik GmbH / Gewerbepark 11 / 96528 Frankenblick / Germany QSIL Ceramics GmbH / Triptiser Straße 22 / 07955 Auma-Weidatal / Germany Brouwerstraat 1 / 9672 AG Winschoten / The Netherlands QSIL GmbH Quarzschmelze Ilmenau / Gewerbering 8 / 98693 Ilmenau / Germany QSIL SE / Gewerbering 8 / 98693 Ilmenau / Germany With the exception of hydrofluoric acid, phosphoric acid, and alkaline compounds its properties are unaffected. Because of its high purity, parts and systems made of fused quartz are ideal suited for industry equipment.įor the Lighting industry, fused quartz is an indispensable material due to the high optical transmission from ultraviolet through the infrared light.įor the Chemical industry and for laboratory equipmentation, fused quartz is used because of its resistance to acids, bases and water. It can withstand temperatures up to 1300☌ and can be rapidly heated and cooled with virtually no risk of breakage. Through its unique combination of thermal, mechanical and optical properties, fused quartz is one of the most important materials for industry and research.įor the Semiconductor an Solar industries, fused quartz is used in high temperature processes because of its high softening point, low thermal expansion and excellent thermal shock resistance. ![]() Fused Silica is made from high purity silica, using unique fusion technology to ensure the highest quality. The single-component glass consists solely of silica (SiO2). Washington Mills is a supplier of fused silica. ![]() 1 Additionally, fused silica demonstrates a low thermal expansion coefficient that provides high thermal stability. Fused silica is often a preferred material for precision optics due to its consistent and repeatable optical performance. Fused quartz is an extraordinary material for numerous industrial applications. We provide a great variety of flexible fused silica capillary products with inner diameters from 2 - 700 m and with numerous coatings available. Fused silica is a common glass type used in the optics industry to manufacture optical components such as lenses, windows, mirrors, prisms, and beamsplitters. ![]()
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