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Heraeus HSQ300 fused silica | Precision quartz capillary custom fabrication. Heraeus HSQ300 fused silica is widely recognized as the benchmark high-end natural fused quartz grade from Heraeus Conamic, Germany, and a standard material for semiconductor, specialty fiber and precision optics applications. Compared with common industrial grades like GE214 and GE124, HSQ300 delivers tighter impurity control, better defect uniformity and superior batch consistency, making it the first choice for extreme-quality high-end applications. Many high-end buyers have common questions: What is the real difference between HSQ300 and GE124? Can domestic fabricators process HSQ300 ultra-thin capillaries? Can 0.6mm outer diameter tubes be produced stably? As a professional high-precision quartz fabricator based in Donghai, China's quartz industry hub, JiuRui Quartz works closely with official Heraeus channels to provide full-range custom fabrication of HSQ300 components, with particular expertise in precision drawing and finishing of 0.6mm ultra-thin quartz capillaries. In this guide, Jiurui Quartz break down Heraeus HSQ300 by material positioning, core specifications, differences vs GE124, capillary fabrication capabilities and applications to help you make accurate selection decisions and demonstrate its high-end precision fabrication strength. Compare all 4 quartz material grades | See GE124 alternative grade What is HSQ300 fused silica? HSQ(R) 300 is a premium electrically fused natural quartz grade from Heraeus Conamic, Germany, positioned as the material of choice for demanding high-temperature semiconductor processes. Produced from high-purity natural quartz raw material via electric arc fusion, backed by Heraeus' century-old quality control system, it achieves top-tier purity, defect control and batch consistency among industrial natural quartz grades. Its core positioning is an upgraded premium alternative to GE124: it shares similar basic thermal performance with GE124, but offers better metal impurity control, internal defect uniformity and long-term high-temperature stability. It is the standard matching material for European and American high-end semiconductor equipment and specialty fiber manufacturers. Note: HSQ300 belongs to Heraeus' natural fused quartz series. Above it sit the HSQ330 ultra-high purity grade and Suprasil synthetic quartz series. HSQ300 is the cost-effective choice for high-end mass production, balancing performance and cost. Core technical specifications of Heraeus HSQ300. 1. Purity & Impurity profile (typical values). | Impurity Element | Content (ppm) | Note | | Lithium (Li) | 0.5 | Tight alkali metal control, minimal high-temperature ion precipitation | | Sodium (Na) | 0.2 | Key controlled element for semiconductor processes | | Potassium (K) | 0.3 | Far better than standard industrial quartz standards | | Iron (Fe) | 0.1 | Strict heavy metal impurity control | | Titanium (Ti) | 1.1 | Ensures stable UV band transmission | | Aluminum (Al) | 15 | Main impurity in natural quartz | | Total metal impurities | ~20ppm max | Better than GE124 industrial standard | | Hydroxyl (OH) content | < 30ppm | Can be further reduced via annealing for high-temperature applications | 2. Key performance parameters. * Coefficient of thermal expansion (CTE): 5.5 x 10[−7] /°C (20-320°C), excellent thermal shock resistance * Softening point: ~1680°C, long-term safe operating temperature <= 1100°C * Density: 2.2 g/cm[3], Mohs hardness 5.5 - 6.5 * Spectral transmission range: 190nm - 2500nm, covering UV to near IR bands * Optical homogeneity: tight bubble, striae and inclusion control, better than standard industrial quartz HSQ300 vs GE124: Key Differences. Both are premium natural quartz grades, but the core differences lie in quality control and batch consistency: | Parameter | Heraeus HSQ300 | Momentive GE124 | | Brand positioning | German premium technology benchmark | US general premium industrial grade | | Total metal impurities | ~20ppm max, tighter control | ~30-50ppm | | Defect control | Century-old Heraeus QC system, excellent batch consistency | Industrial low-defect standard, meets general high-end needs | | OH content | As-drawn < 30ppm, optimizable via annealing | As-drawn < 5ppm, advantage in high-temperature performance | | Capillary fabrication suitability | Uniform material, more stable for ultra-thin tube drawing | Suitable for standard diameters, slightly lower yield for ultra-thin tubes | | Price tier | Premium grade, slightly above GE124 | High industrial grade | | Domestic availability | Mostly factory order, slightly longer lead time | Well stocked, faster delivery | In short: choose HSQ300 for extreme batch consistency, advanced semiconductor processes and ultra-precision components; choose GE124 for better cost-effectiveness in general high-end optics and standard high-temperature structural parts. HSQ300 precision fabrication capability: 0.6mm ultra-thin quartz capillary. Backed by original Heraeus raw material and precision drawing production lines, Jiurui Quartz stably produce custom HSQ300 ultra-thin quartz capillaries - its core differentiated advantage over ordinary fabricators. 1. Capillary Parameter range. * Outer diameter range: minimum 0.6mm, up to 8mm full coverage * Inner diameter range: custom made, wall thickness as thin as 0.1mm * Tolerance control: OD tolerance +/-0.02mm, ID tolerance +/-0.01mm, stable dimensional accuracy * Length range: 10mm minimum up to 2000mm, precision fixed-length cutting available * End face treatment: precision cutting + end face polishing / flame polishing, chip-free, burr-free, smooth inner wall 2. Secondary processing Services. * End chamfering, tip forming, flaring, necking * Side drilling, slotting, scale marking * Cleanroom cleaning & dust-free packaging for semiconductor cleanliness requirements * Multi-capillary assembly welding, custom capillary assemblies 3. Quality assurance. * All capillaries are drawn from original Heraeus HSQ300 rod / tube preform with full material traceability * Laser diameter gauge monitors dimensions throughout production, 100% inspection for precision grades * Annealing process eliminates internal stress for longer service life and fracture resistance * Small-batch sampling available - confirm dimensions and quality before bulk orders Common applications of HSQ300 fused silica. 1. Semiconductor & microelectronics. * Precision quartz capillaries for semiconductor packaging and testing * Micro fluid transfer tubes for wafer processing * Precision quartz components for plasma etching equipment Fit: Low impurities, high cleanliness, excellent batch consistency, meets advanced process stability requirements 2. Specialty fiber & Optical communications. * Capillaries for specialty fiber preforms * Precision quartz sleeves for fiber couplers and connectors * Quartz guide tubes for high-power laser equipment Fit: Uniform material, excellent optical consistency, stable fiber drawing performance 3. Precision instruments & analytical testing. * Quartz capillaries for chromatographs and spectrometers * Micro fluidic and bioanalytical quartz tubes * Protective sleeves for high-temperature testing equipment Fit: High dimensional accuracy, smooth inner wall, low fluid resistance, reliable measurement data 4. Advanced Medical & biotechnology. * Medical precision quartz capillaries * Bio-reagent and sample transfer tubes * Quartz components for UV sterilization equipment Fit: High purity, no impurity precipitation, autoclave resistant, meets cleanliness requirements FAQs about HSQ300 material selection. 1. Is HSQ300 necessary for general industrial applications? No. For general high-temperature structural parts and standard optical windows, GE214 and GE124 are fully adequate. HSQ300 is targeted at high-end precision scenarios with higher pricing, and would result in performance overkill for general use cases. 2. Can 0.6mm OD HSQ300 capillaries be mass-produced stably? Yes. Jiurui Quartz has mature precision drawing processes and inspection procedures to stably mass-produce 0.6mm OD HSQ300 capillaries. Dimensional tolerance and end face quality meet high-end equipment requirements. Small-batch trial orders are supported. 3. How to verify authentic Heraeus HSQ300 material? All its HSQ300 raw material is sourced from official authorized Heraeus channels. Jiurui Quartz can provide original factory batch numbers, material certificates and traceability documentation, and support third-party composition testing to guarantee no substitution of inferior material. 4. What is the difference between HSQ300 and Heraeus Suprasil synthetic quartz? HSQ300 is natural fused quartz for premium industrial use. Suprasil is CVD synthetic quartz for cutting-edge applications, with ppb-level purity and costing several times more than HSQ300. It is only used for extreme scenarios like EUV lithography and deep-UV lasers. Contact Jiurui Quartz for HSQ300 quartz solutions. If you need Heraeus HSQ300 quartz capillaries, precision quartz tubes or custom shaped parts, work with JiuRui Quartz. Original factory sourced authentic material, 0.6mm ultra-thin capillary precision fabrication, small-batch sampling available, free selection consultation and technical support. Company: Donghai JiuRui Quartz Products Co., Ltd. Brand: JiuRui Quartz WhatsApp (Direct Chat): +86 15189047520 Services: Heraeus HSQ300 quartz fabrication, semiconductor quartz capillary customization, 0.6mm ultra-thin quartz tubes, high-precision quartz components Post Views: 33

CarboTech and Heraeus Precious Metals present a joint solution at FILTECH 2026: Antimicrobially functionalised activated carbons for filtration applications. 23.06.2026 Essen / Hanau, May 2026 - The CarboTech Group and Heraeus Precious Metals will present their joint solution for antimicrobial-functionalised activated carbons at FILTECH 2026. Visitors will find the two companies in Hall 8, Stand B28, where the application of AGXX technology on activated carbon for filtration and water treatment applications will be showcased. An innovative response to microbial growth in filtration systems In many applications - particularly in water treatment - microbial growth on filter media poses a major challenge. The formation of biofilms can significantly impair the performance of activated carbons while also increasing hygiene risks. "Microbial growth and biofilm formation not only compromise hygiene but also the performance of filter systems. This is precisely where AGXX comes in: the technology acts directly on the surface and tackles microbial growth right where it occurs. "In collaboration with CarboTech, we are specifically applying this technology to high-performance activated carbon materials, making its added value for filtration applications tangibly evident," explains Martin Danz, Head of the Antimicrobial Technologies division at Heraeus Precious Metals. The jointly developed solution by CarboTech and Heraeus Precious Metals specifically addresses this problem: By combining high-quality activated carbons with AGXX technology, an antimicrobial effect is created directly on the surface of the filter material. This ensures sustained inhibition of microbial growth and supports stable process conditions over the long term. "In water treatment in particular, it is crucial to protect adsorption materials from microbial colonisation in the long term. AGXX offers a sustainable approach to this, helping to reduce hygiene risks and maintain the stability of adsorbents' functionality. Together with Heraeus, we are transferring a highly effective antimicrobial technology into real-world applications," emphasises Satrugna Vinjarapu, Chief Commercial Officer of the CarboTech Group. Collaboration across the entire Value Chain The partnership combines two complementary areas of expertise to create a high-performance, integrated solution: Heraeus Precious Metals * Development and provision of AGXX technology * Comprehensive Expertise in precious metal solutions and catalytic coating systems * Optimisation of the technology for specific applications and ensuring compliance with regulatory requirements CarboTech Group * Extensive experience in the development, impregnation and processing of activated carbons * In-depth expertise in filtration applications * Production and global distribution of the functionalised products Together, the partners are creating a solution that combines the advantages of both technologies and sets new standards for hygienic and high-performance filtration systems. Added value through complementary technologies The integration of AGXX technology into activated carbon creates clear added value: * Prevention of biofilm formation * Improvement in hygienic safety * Increased service life and efficiency of filter materials * An alternative to conventional biocides Close collaboration enables the optimal coordination of development, application and marketing - from material innovation to industrial use. Invitation to FILTECH 2026 The CarboTech Group and Heraeus Precious Metals cordially invite all interested parties to find out more about the joint technology platform on site and to exchange ideas with experts from both companies. Visit CarboTech AC GmbH at FILTECH 2026 in Hall 8 at Stand B28. About the partners CarboTech Group The CarboTech Group, headquartered in Essen, is one of the world's leading suppliers of activated carbon and customised adsorption solutions. Through its technologies, the company helps purify air, gases, and liquids, and supports customers across a wide range of industries in reducing emissions, using resources efficiently, and complying with environmental standards. Heraeus Precious Metals Heraeus Precious Metals is globally leading in the precious metals industry. The company is part of the Heraeus Group and covers the value chain from trading to precious metals products to refining and recycling. It has extensive expertise in all platinum group metals as well as gold and silver. With more than 3,000 employees at 16 sites worldwide, Heraeus Precious Metals offers a broad portfolio of products that are essential for many industries such as the automotive, chemicals, semiconductor, pharmaceutical, hydrogen and jewelry industry. About Heraeus Heraeus is a globally active, family-owned technology group. Based in Hanau, Germany, the company comprises 15 operating companies whose products and services span the Business Areas of Metals & Recycling, Healthcare, Semiconductor & Electronics, and Industrials. In fiscal year 2024, Heraeus generated revenues of €29.4 billion and employed roughly 15,200 people across 40 countries. This makes Heraeus one of the top ten largest family-owned enterprises in Germany. With deep expertise in advanced materials, Heraeus is a leader across key global industries. The group ranks among the foremost providers of precious metals, supplies quartz glass for the semiconductor and telecommunications sectors, and manufactures sensors for the steel industry. In addition, its materials and technologies for medical technology help improve the quality of life for millions of people worldwide. Innovation is the central driver of Heraeus's success. Each year, six percent of revenues (based on revenues excluding precious metals) are reinvested into research and development. Beyond that, the company partners with leading research and educational institutions around the world. At Heraeus, growth and sustainability go hand in hand: the company designs its own processes to conserve resources and supports its customers in operating more sustainably with innovative materials and solutions. The group's roots trace back to 1660, when Isaac Heraeus took over a pharmacy in Hanau. Since then, the company has stood for technological progress, sustainable growth, and responsible conduct - across generations. MATERIALS. INNOVATIONS. FOR GENERATIONS. Media Contact Heraeus Precious Metals Pierre Schmidt Senior Manager Communications Heraeus Precious Metals Media Contact CarboTech Carlos Rodriguez Marketing CarboTech Gruppe