水晶管
石英プレート
石英ロッド
光学アプリケーション
半導体産業
研究室および化学用途
Quartz round screw-top cuvettes are laboratory vessels made from fused quartz, characterized by high light transmittance, high-temperature resistance, and chemical corrosion resistance. They are suitable for spectroscopic analysis in the ultraviolet to visible light regions. These cuvettes are designed with a round shape and a screw-top to facilitate sealing and secure placement, and are commonly used for precise measurements of varying sample volumes.
| 物件内容 | 資産価値 |
|---|---|
| 二酸化ケイ素 | 99.99% |
| 密度 | 2.2×10³ kg/cm³ |
| 硬度 | 5.5 - 6.5 モース硬度 570 KHN 100 |
| 引張強度 | 4.8×10⁷ Pa (N/mm2) (7000 psi) |
| 圧縮強度 | >1.1×10⁹Pa (160,000 psi) |
| 熱膨張係数 | 5.5×10-⁷cm/cm-°C (20°C-320°C) |
| 熱伝導率 | 1.4 W/m-°C |
| 比熱 | 670 J/kg-°C |
| 軟化点 | 1730度C（3146度F） |
| アニーリングポイント | 1210度C（2210度F） |
| ストレイン・ポイント | 1120度C（2048度F） |
| 作業温度 | 1200°C |
| 電気抵抗率 | 7×10⁷Ωcm (350°C) |
| サイズ | カスタマイズ |
| ロゴ | カスタマイズされたロゴ |
High Light Transmittance
The quartz material offers high light transmittance in the ultraviolet to visible light regions, which is essential for spectroscopic analyses requiring precise measurements within these wavelength ranges.
High-Temperature and Chemical Corrosion Resistance
Quartz cuvettes are able to withstand high temperatures and exhibit good resistance to most chemical reagents, allowing them to maintain performance even under harsh experimental conditions.
Screw-Top Design
The screw-top design allows for sealing of the cuvettes, reducing sample evaporation and contamination. It also facilitates secure mounting of the cuvettes on spectrophotometers, ensuring the stability of measurements.
Orientation Considerations
Quartz round screw-top cuvettes may have an orientation, and proper placement according to the specific model and markings is necessary to minimize measurement errors and ensure the accuracy of experimental results.
アプリケーション・シナリオ
Use with Circular Dichroism Spectrometers
Quartz round screw-top cuvettes are commonly used with various models of circular dichroism spectrometers and other analytical instruments, particularly suitable for circular dichroism spectroscopic analysis.
Infrared Spectroscopic Analysis
In infrared spectroscopic analysis, quartz cuvettes play a crucial role, primarily for loading reference and sample liquids. Their high light transmittance and good chemical stability ensure the accuracy and reliability of the analysis results.
Measurement of Oil in Water
Quartz cuvettes are essential components of infrared oil-in-water analyzers and Fourier transform infrared (FTIR) spectrometers, mainly used for the determination of oil in water.
Laboratory Spectroscopic Analysis
Quartz cuvettes, due to their superior light transmission, are widely used in laboratory spectroscopic analysis, including measurements in the ultraviolet to visible light regions, as well as for ultraviolet spectroscopic analysis requiring high transmittance.
The high light transmittance of quartz cylindrical cuvettes in the ultraviolet region is essential for experiments requiring precise measurements in this wavelength range. Many biomolecules and chemical substances have characteristic absorptions in the ultraviolet region, which are crucial for their quantitative analysis and identification.
When using quartz cuvettes, avoid touching the optical surfaces to prevent contamination. Thoroughly clean and properly store them before and after use to maintain their performance. Also, because quartz material is fragile, handle with care to prevent damage.
When cleaning quartz cuvettes, gently wipe with a mild detergent and a soft cloth, avoiding hard brushes or abrasives that could scratch the surface. After cleaning, thoroughly rinse and air-dry or wipe with a lint-free cloth. For long-term storage, store them in a suitable cuvette box, avoiding direct sunlight and high-temperature environments to extend their lifespan.
よくある質問
石英ガラスは硬くて脆い材料で、物理的、化学的性質が優れ、機械的硬度が非常に高く、電気絶縁性がよく、高温と耐食性に優れ、遅延性能が低く安定で、光透過性がよい。半導体、光学、電気、化学、航空宇宙、自動車などの分野で広く使用されている。硬くて脆い材料は加工が難しく、多くの分野で刃先の倒れが小さく、材料ロスが少なく、断面粗さが小さく、切断厚さ範囲が広い切断加工が急務となっている。石英ガラスの伝統的な切断方法は機械的切断、すなわち砥石切断である。非伝統的な切断方法には、ウォータージェット切断、電気化学放電ワイヤー切断、連続レーザー切断などがある。機械的切断はコストが低いが、ホイールと材料が接触するため工具の摩耗が大きく、材料が工具によって汚染されやすい。石英ガラスはエッジ崩壊、マイクロクラック、残留応力が発生しやすく、材料の強度や性能に影響する！曲線切断が難しく、研削や研磨などの後処理が必要。レーザー切断は材料に直接触れないため、接触応力がなく、複雑な曲線切断が可能です。ピコ秒レーザーは、スポット径が小さい、精度が高い、材料との作用時間が短い、作用面積が小さいなどの利点があり、硬くて脆い材料の加工に適しています。
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