Chemical heating quartz test tube

The chemically heated quartz test tube is made of high-purity quartz glass, which has excellent high temperature resistance (can withstand temperatures above 1100 ℃) and extremely low thermal expansion coefficient, and can withstand severe temperature changes without bursting. It has strong chemical stability, excellent resistance to most acids and bases except hydrofluoric acid, and good transparency. This product is widely used in chemical analysis, semiconductor processing, and laboratory high-temperature reactions, and is an ideal equipment for precision experiments.

Product FAQ: Have you also encountered these difficulties?

Q: When conducting high-temperature digestion or melting experiments, ordinary glass test tubes often cannot withstand high-temperature explosions, or samples are contaminated due to impure materials, resulting in data deviations. What should be done?

Answer: Our chemically heated quartz test tube can solve this problem. Its thermal expansion coefficient is extremely low (5.4 × 10 ⁻⁷/℃), able to withstand drastic temperature changes (such as a sudden drop from 1000 ℃ to room temperature), and the material is high-purity quartz without metal ion precipitation, ensuring the purity of the reaction system and the authenticity and reliability of the data.

Q: Strong acids (such as aqua regia and sulfuric acid) are often used in laboratories for heating experiments. Ordinary test tubes will quickly corrode, become rough, and even leak. Is there a more durable option?

Answer: Quartz material is a "natural barrier" for all acids except hydrofluoric acid and hot phosphoric acid. Our product has 30 times the acid corrosion resistance of ordinary ceramics and 150 times that of stainless steel. Even after long-term use at high temperatures, the inner wall remains smooth and does not affect the chemical reaction process.

Q: We are developing a new project that requires reaction tubes with special diameters or lengths. Standard parts are not available, where can we customize them?

Answer: We support full-size customization based on drawings. Whether it's grinding mouth marking, ball milling mouth connection, irregular sealing, or even complex structures with branch tubes, we can quickly produce according to your drawings or samples, with flexible minimum order quantities to meet various needs from small-scale to pilot scale.

Core advantage: Why choose our quartz test tube?

Ultimate material performance

-High temperature resistance: The softening point temperature can reach 1600 ℃ -1730 ℃, and it is recommended that the long-term safe working temperature can reach 1100 ℃ -1200 ℃. It can easily handle both direct burning and high-temperature cracking.

-Optical transparency: The visible light transmittance is over 93%, making it easy to directly observe the color changes and precipitation processes of liquids under high-temperature reactions, and the experimental process is clear at a glance.

-Electrical insulation: maintains good electrical performance in high-frequency and high-voltage environments, suitable for special photoelectric heating experimental scenarios.

Strict process standards

Each test tube undergoes high-temperature fire polishing treatment, with smooth and rounded edges without burrs, which not only increases the strength of the mouth and prevents breakage during bottle capping or clamping, but also makes cleaning more convenient.

Sealing and compatibility

We provide chemically heated quartz test tubes with standard grinding ports (14, 19, 24, etc.), which can be perfectly matched with reflux condenser tubes, reaction vessels or other glass instruments to ensure good airtightness of the reaction system and are suitable for anhydrous and anaerobic operations.

Product application scenario display

Our chemically heated quartz test tubes are widely used in various extreme environments with high temperature and pressure:

-University research laboratory: used for precursor loading in hydrothermal synthesis, high-temperature melting, and CVD experiments.

-Third party testing agency: used for the "acid digestion" process before heavy metal detection (such as pre-treatment using graphite furnace atomic absorption spectrometer).

-Chemical and pharmaceutical industries: used for high-temperature reflux, distillation, and storage and heating of highly corrosive samples in small-scale process development.

Customer application case sharing

Case 1: Synthesis Project of New Energy Materials in the School of Materials Science at a certain university

-Background of the requirement: In the synthesis experiment of "high entropy alloy oxides", the professor's team needs to perform rapid heat treatment on the precursor in a muffle furnace at 1200 ℃. Previously, a corundum crucible was used. Due to the presence of trace impurities (Na, Fe, etc.) in corundum, they diffused into the sample at high temperatures, resulting in the appearance of impurity peaks in the XRD pattern, which seriously affected the judgment of material phase transition analysis.

-Solution: We have customized ultra-high purity chemically heated quartz test tubes (diameter 25mm, length 200mm, one end sealed) for it. The total impurity content of this batch of quartz is extremely low (less than 20ppm) and does not react with the sample at high temperatures.

-Final effect: The synthesized sample was tested to be free of any foreign element contamination, and a pure phase material was successfully prepared. The relevant paper has been published in a well-known journal, and the acknowledgement section specifically mentions the key supporting role of the high purity of the quartz vessels used in the experimental results.

Case 2: COD (Chemical Oxygen Demand) Analysis of an Environmental Testing Company (Third Party Laboratory)

-Requirement background: The laboratory needs to process a large number of water quality samples every day. The COD reflux digestion process requires the use of concentrated sulfuric acid and potassium dichromate to be heated for a long time at a high temperature of 165 ℃. After 10-15 uses, ordinary glass material digestion tubes often have slight scratches on the inner wall due to corrosion, resulting in severe wall hanging. This not only makes cleaning difficult, but also easily causes cross contamination, affecting the parallelism of detection results.

-Solution: We have purchased in bulk the thickened chemically heated quartz test tubes (18 * 180mm flat mouth) that we produce.

-Final effect: The usage cycle is extended to more than six months, and the inner wall remains as smooth as new. The corrosion resistance significantly reduces the frequency of consumable replacement, shortens cleaning hours by 40%, and reduces the repeatability error of data from the original 5% to within 1%. It has successfully passed multiple CMA capability verifications.

Specifications and Customization Services

We are well aware that every research and development project is unique. In addition to our standard stock options of 5ml, 10ml, 20ml, 50ml, and 100ml, we offer a comprehensive range of customized services

-Size customization: The outer diameter can be processed from 4mm to 60mm, and the length can be processed from 20mm to 1000mm.

-Shape customization: can process flat bottom, round bottom, cone bottom; Can add branch tubes and flask shaped expansion ports; Can be connected with standard ports, ball milling ports, and threaded ports.

-Deep processing: such as bending, burning, sealing, welding bypass tubes, etc.

Whether you are teaching basic chemistry or exploring cutting-edge materials science, choosing the right chemical heating quartz test tube is half the battle.

If you are currently looking for quartz test tubes that can withstand high temperature tests, are corrosion-resistant, and have the appropriate size, please feel free to contact us at any time to provide drawings or let us know your requirements. We will provide you with the most professional customized solution!

Luverre Quartz manufactures and sells a wide range of high quality fused quartz glass, including fused quartz tubes, fused quartz plates, fused quartz rods, fused quartz windows, fused quartz crucibles, fused quartz boats, fused quartz flanges, fused quartz beakers, fused quartz glass instruments, and more. We can meet all kinds of customized requirements for fused quartz glass products.

For more information, please feel free to contact us.

Why choose us?

1.We are more experienced.

We have over 19 years production experience of quartz items.

2.We are more efficient.

We reply customers’ requests within 24 hours and we have high efficient production, engineers and sales team.

3.Our quality is more guaranteed.

We control the quality from quartz lumps to quartz sand and then quartz products, we have better and stricter quality control than other manufactures.

4.We are able to produce more difficult quartz products.

We have large grinding platforms and precision etching machines which enable us to manufactures and sells a wide range of high quality quartz glass, including quartz tubes, quartz plates, quartz rods, quartz windows, quartz crucibles, quartz boats, quartz flanges, quartz beakers, quartz glass instruments, and more.

5. About 20 years of professional experience

-Focusing on the manufacturing of quartz products for a quarter century

-The average working experience of the technical team exceeds 15 years

6.Global Service Network

-Our products are exported to over 40 countries and regions including Europe, America, Japan, South Korea, and the Middle East

-Multi language technical support (English, German, French, Spanish, Russian, Japanese)

7. Flexible cooperation mode

Support small batch trial orders, medium - and long-term cooperation, and urgent production for urgent orders, providing OEM/ODM services.