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Explore our precision-crafted quartz boat sample holders and complementary laboratory quartzware — engineered for demanding analytical and industrial environments.
A quartz boat sample holder is a precision-formed labware component manufactured from high-purity fused silica (SiO₂ ≥ 99.99%). Its characteristic elongated, open-trough geometry — resembling a traditional boat — is purpose-designed to cradle substrates, wafers, powder specimens, or solid samples inside tube furnaces, diffusion furnaces, and analytical instruments during high-temperature processing or measurement cycles.
Unlike conventional ceramic or alumina boats, fused quartz boats offer an unmatched combination of extreme thermal stability (continuous service up to 1100 °C, short-term up to 1250 °C), near-zero thermal expansion coefficient (0.55 × 10⁻⁶/°C), and exceptional chemical inertness toward acids, alkalis, and oxidising atmospheres. These properties eliminate sample contamination from the holder itself — a critical requirement in trace-element analysis, semiconductor processing, and pharmaceutical QC.
Quartz boat sample holders are available in a wide range of standard and custom dimensions, from micro-scale boats for TGA/DSC instruments to large-format multi-slot boats for batch diffusion processing of silicon wafers. Slotted, flat-bottomed, V-groove, and lidded variants address the full spectrum of laboratory and industrial holding requirements.
Why high-purity fused quartz is the gold standard for laboratory sample holding and analytical instrumentation.
Continuous operation up to 1100 °C; short-term tolerance to 1250 °C. Ideal for tube furnaces, diffusion systems, and thermal analysis instruments where ceramic alternatives would crack or contaminate.
Resistant to virtually all acids (except HF) and most alkalis at elevated temperatures. Zero leaching of metallic ions ensures analytical results remain uncompromised — essential for ICP-MS, AAS, and XRF sample preparation.
Fused quartz transmits light from deep UV (170 nm) through infrared (3500 nm), making quartz boats compatible with in-situ optical monitoring, photoluminescence mapping, and spectroscopic analysis without interference.
Extremely low thermal expansion (0.55 × 10⁻⁶/°C) allows rapid heating and quenching cycles without fracture — critical for CVD, oxidation, and annealing processes where fast ramp rates are required.
Ultra-low metallic contamination (total metals < 20 ppm) prevents cross-contamination in semiconductor wafer processing, solar cell manufacturing, and pharmaceutical synthesis — where part-per-billion purity matters.
CNC-assisted forming and flame-polishing processes deliver dimensional tolerances of ±0.2 mm. Custom slot pitches, wall thicknesses, and flanged ends are available to OEM specifications for instrument manufacturers.
Driven by explosive growth in semiconductor fabrication, photovoltaic (solar) cell production, and precision analytical chemistry, the global market for high-purity quartz labware — including quartz boat sample holders — is projected to exceed USD 3.8 billion by 2030, growing at a CAGR of over 7.5%. Demand from Asia-Pacific, particularly China, South Korea, Taiwan, and India, is leading this expansion as domestic chip and solar panel manufacturing capacity scales rapidly.
Understanding the macro forces that are driving innovation and procurement decisions across laboratory and industrial sectors.
As chipmakers push below 3 nm process nodes and adopt 3D-IC stacking, the thermal budget for diffusion, oxidation, and annealing steps becomes tighter. High-purity quartz boats with ultra-low metallic contamination are non-negotiable for preventing device yield loss from trace-metal poisoning of gate dielectrics.
Global solar cell installations are set to surpass 500 GW annually by 2026. Each TOPCon, HJT, or PERC cell requires multiple high-temperature diffusion steps where quartz boats carry silicon wafers through phosphorus or boron doping furnaces. Increased fab capacity directly translates to higher quartz boat consumption.
Stricter regulatory frameworks (USP, EP, ICH Q3D) for elemental impurity testing in drugs are compelling pharmaceutical labs to upgrade sample preparation workflows. Quartz boats and vessels are preferred for ashing, digestion, and combustion steps because they introduce zero extractable metals.
Expanding mandatory heavy-metal monitoring in food, water, and soil under regulations such as EU Regulation 2023/915 is increasing demand for contamination-free sample preparation vessels. Quartz boats are widely used in muffle furnace ashing prior to ICP-OES and AAS analysis.
Solid-state electrolyte synthesis, cathode material calcination (LFP, NMC, NCA), and anode carbon coating processes all require high-temperature boat-style holders that resist lithium, sodium, and transition-metal corrosion at 600–1100 °C — a growing niche for specialised quartz boats.
Modern automated tube furnace systems and robotic sample handlers require quartz boats with precise dimensional tolerances and standardised end-stop features. Suppliers offering CNC-ground boats with ±0.1 mm tolerances are gaining share as labs automate high-throughput thermal processing.
Quartz boat sample holders serve highly specialised roles across multiple high-technology industries. Here is a detailed breakdown of critical use cases.
In horizontal and vertical diffusion furnaces, multi-slot quartz boats hold 25–200 silicon wafers simultaneously during phosphorus (POCl₃), boron (BBr₃), or thermal oxidation (dry/wet O₂) processes at 800–1100 °C. Slot pitch accuracy directly affects dopant uniformity across the wafer batch. High-purity quartz (SiO₂ > 99.999%) prevents Na⁺, K⁺, Fe, and Cu contamination that would degrade carrier lifetime and gate oxide integrity.
Solar cell manufacturers use quartz boats in inline and batch furnaces for emitter diffusion, Al-BSF co-firing, and passivation annealing. TOPCon cell production adds poly-Si deposition steps at 600–800 °C. The thermal cycling frequency in PV fabs is extremely high — boats must withstand thousands of thermal cycles without warping, making low-expansion fused quartz the only viable material.
Micro-quartz boats (5–50 mm length, 0.1–5 g capacity) are used as sample pans in simultaneous TGA-DSC instruments. Their negligible mass, zero reactivity with sample off-gases, and UV transparency for evolved-gas optical monitoring make them indispensable. Pharmaceutical polymorphism studies, catalyst characterisation, and coal/biomass proximate analysis all rely on quartz boat sample holders for reproducible baseline measurements.
In CHNS/O elemental analyzers (Elementar, LECO, PerkinElmer), quartz boats carry solid organic and inorganic samples into the combustion tube at 950–1200 °C. The boat must not contribute carbon, nitrogen, hydrogen, or sulfur to the measurement. Fused quartz boats are the standard consumable for this application, with global consumption of millions of units annually across environmental, agricultural, food, and materials testing laboratories.
Research laboratories and pilot-scale production facilities use quartz boats for calcination of catalysts, ceramics, pigments, and nanomaterials in tube furnaces up to 1200 °C under air, inert (N₂/Ar), reducing (H₂/N₂), or reactive (NH₃, H₂S) atmospheres. The boat's chemical inertness prevents unwanted reactions between the sample and the holder — a critical advantage over alumina boats when processing sulfide, nitride, or halide compounds.
Loss-on-ignition (LOI) and sulfated ash testing per USP <281> and EP 2.4.14 require inert, pre-weighed vessels that can be heated to 600–800 °C in a muffle furnace. Quartz boats offer lower blank values and faster equilibration times than platinum crucibles for routine QC testing, providing a cost-effective alternative for high-throughput pharmaceutical quality control labs.
Total organic carbon (TOC) determination in soil and sediment samples, heavy-metal speciation studies, and sequential extraction procedures all employ quartz boats for high-temperature ashing steps. The ability to acid-clean quartz to ppb-level metal blanks ensures that background contamination does not inflate analytical results — essential for compliance with EPA Method 3050B and ISO 14869 digestion protocols.
Chemical vapour deposition (CVD) and physical vapour deposition (PVD) systems use quartz boats to hold source materials (e.g., selenium, sulfur, tellurium) that are evaporated at controlled temperatures to deposit thin films on substrates. The precise volume and geometry of the boat controls the evaporation rate and film uniformity — critical for CIGS solar cells, OLED display layers, and 2D material (MoS₂, WS₂) synthesis.
Donghai County Leef Quartz Technology Co., Ltd. was founded in 2022 as a subsidiary of Lianyungang Southeast Quartz Products Co., Ltd., which was established in 2015. We are located in Donghai County, Lianyungang City, Jiangsu Province — known as "China Crystal Capital" and a national-level silicon material industry base. Blessed with superior high-purity quartz ore resources, Donghai is a core production area of quartz raw materials in China.
Relying on local high-grade quartz veins, we focus on the deep processing of quartz glass, and are a professional manufacturer integrating design, production, sales and foreign trade. With mature production technology, strict quality control and complete customized services, we have become a trusted supplier of quartz consumables for industries including photovoltaics, semiconductors, laboratories, chemical engineering and lighting.
All products are made of high-purity fused quartz raw materials, featuring excellent heat resistance (up to 1200°C), thermal shock resistance, corrosion resistance, high light transmittance and electrical insulation. We also provide custom processing for special-shaped products according to customer drawings to meet personalized requirements.
We operate standardized production workshops equipped with a full set of advanced equipment for quartz cutting, grinding and high-temperature forming, establishing a complete production line from quartz processing to finished product inspection.
Backed by a professional production management team with over 10 years of industry experience, we specialize in process optimization and customized manufacturing. We support rapid prototyping and mass production for various complex products, with an annual capacity of hundreds of thousands of pieces. We accept both small-batch custom orders and large-scale bulk orders with efficient delivery.
By continuously upgrading production techniques, we improve product precision and stability, providing cost-effective quartz solutions for global customers — including precision quartz boat sample holders engineered for laboratory and analytical use.
Supported by high-quality local quartz resources and mature manufacturing capabilities, we provide a full range of high-performance quartz products for laboratory, semiconductor, photovoltaic, and industrial applications.
Quartz beakers, condensers, distillers, quartz boat sample holders, lamp caps, and precision analytical vessels.
High-purity fused quartz tubes, furnace tubes, bell jars, quartz boats, lamp holders, crucibles, and diffusion carriers.
Quartz baskets, tanks, cups, exhaust tubes, condensation bottles, boat racks, quartz rods, plates, rings, and OEM custom parts.
From quartz boat sample holders and COD digestion tubes to crucibles and fused silica coil tubes — our full product range supports every laboratory and analytical workflow.
