Quartz Reagent Bottle

The Quartz Reagent Bottle, also known as fused silica sample storage bottle or quartz lab vial, is a high-performance lab quartz ware fabricated from ultra-high purity transparent fused silica raw material. It adopts integrated hot forming manufacturing technology, featuring seamless bottle body, smooth inner and outer walls, stable bottle mouth structure. The product combines excellent high-temperature resistance, outstanding chemical inertness and superior ultraviolet light transmittance. It can be used for long-term storage of high-purity reagents, trace standard samples, corrosive chemical solutions, and also supports high-temperature heating reaction, photochemical experiments, sample digestion and pretreatment. Compared with ordinary borosilicate glass bottles, plastic PTFE or PP sample bottles, quartz reagent bottles have far better thermal stability, no ion leaching and unique UV transmission property. It will not release metal impurity elements to contaminate stored samples, and can withstand high-temperature heating, which makes it an indispensable container in trace elemental analysis, photochemistry, semiconductor material testing, environmental monitoring and advanced material research fields. It can be customized in capacity, bottle mouth structure, wall thickness and shape according to customer requirements to match different experiment and equipment application scenarios.

Material

The raw material of this quartz reagent bottle is high-purity transparent fused silica with SiO content 99.99%. It is produced through high-temperature electrofusion synthesis process. The content of iron, sodium, potassium, aluminum, calcium and heavy metal impurities is controlled at an extremely low level. The softening point of fused silica can reach 1730. The safe long-term working temperature of the finished quartz bottle can reach 1100~1200, and it can bear instantaneous peak temperature up to 1250. Its thermal expansion coefficient is only 0.5510 /, which is much lower than ordinary borosilicate glass and plastic materials. This ultra-low expansion characteristic brings excellent thermal shock resistance. In terms of chemical stability, fused silica maintains chemical inertness against almost all acids, organic solvents and corrosive gases, with the only exceptions of hydrofluoric acid and hot concentrated phosphoric acid. When chemical reagents, standard solutions and liquid samples are stored inside the bottle for a long time, there will be no ion dissolution, no material peeling and no chemical reaction between the bottle wall and the medium. It will not leach metal impurity elements into the solution, which effectively avoids the problem of high blank value in trace element analysis, ICP, AAS, ICP-MS and other precision detection experiments. In optical performance, high purity fused silica keeps high transmittance in ultraviolet, visible and near-infrared spectral bands. When used for photochemical reaction and UV irradiation experiment, ultraviolet light can penetrate the bottle wall and act on the internal reaction medium, realizing in-situ light reaction without transferring samples. Under high temperature and vacuum environment, fused silica has extremely low outgassing rate, no volatile organic compounds or gas will be released from the bottle wall. It can be used in inert gas sealing storage and vacuum reaction systems without polluting the internal sample environment. The material maintains stable mechanical performance under high temperature condition, low high-temperature creep, and the bottle shape will not deform under long-term high-temperature heating.

Production Process

The whole production process of quartz reagent bottle is completed by professional quartz hot forming technology, precision finishing and multiple strict quality inspection procedures. First of all, select qualified high-purity transparent quartz tube blank, inspect the inner and outer diameter, wall thickness, and check whether there are bubbles, stones, cracks and other internal defects inside the tube blank. Tube blanks with unqualified quality will be eliminated before production. According to the customers required bottle capacity, bottle height and bottom dimension, cut the quartz tube blank to the required length. The bottle bottom forming is the first key step. Hydrogen-oxygen flame is used to heat the bottom end of the quartz tube locally to melt the quartz material, and skilled quartz operators carry out seamless hot sealing for the bottle bottom. The wall thickness of the bottle bottom is controlled uniformly during melting, avoiding internal shrinkage holes, bubbles and uneven thickness. After the bottle bottom is completely sealed and cooled, start the bottle mouth forming process. The top of the quartz tube is heated by flame to reach softening state, then the bottle mouth is stretched and shaped with special refractory molds. We can make flat mouth, ground joint mouth, threaded mouth and other different bottle mouth structures according to customer drawings. The bottle mouth size is precisely controlled to ensure good matching performance with quartz stopper, PTFE stopper or sealing cap. After the bottle body and bottle mouth are formed, the rough edges of the bottle mouth are removed by fire polishing to make the mouth edge smooth without burrs. Then the formed quartz reagent bottle is put into the high-temperature annealing furnace for full programmed annealing treatment. The annealing procedure adopts slow temperature rise, constant temperature heat preservation and staged slow cooling. This procedure can thoroughly eliminate the internal stress generated during flame melting, hot sealing and bottle mouth shaping. Removing internal stress is the core process to prevent the quartz bottle from cracking during high-temperature heating and temperature alternation. After annealing, multi-stage ultrasonic cleaning is carried out with high-purity deionized water and special quartz cleaning agent. The cleaning process removes fine quartz powder, dust and organic contaminants attached to the inner wall and outer surface of the bottle. After cleaning, the quartz bottle is dried in a dust-free constant temperature oven to avoid water marks and secondary contamination. Then comprehensive multi-dimensional quality inspection is carried out. Visual inspection checks the bottle body, bottle bottom, bottle mouth and inner cavity for bubbles, cracks, scratches and white spots. Dimensional inspection verifies bottle height, outer diameter, inner cavity size, wall thickness, bottle mouth dimension and capacity. Leakage test is performed to fill the bottle with liquid and keep sealed for a period of time to confirm no liquid seepage. Sampling thermal shock test is carried out to verify the thermal stability of finished products. Inner cavity inspection is used to check the smoothness of the inner wall of the bottle, to confirm no residual particles or deformation. After all inspection items meet the acceptance standard, the quartz reagent bottle is packed with shock-proof and dust-free packaging materials to prevent collision damage and pollution during transportation. We support full personalized customization service: bottle capacity, bottle height, outer diameter, wall thickness, bottle mouth type, bottom structure can all be designed and processed according to customer drawings and technical parameters. We can also add scale marks, side nozzles, handles and other auxiliary structures as required.

Product Features

1. Integrated seamless hot forming bottle body. The bottle bottom is hot-melt sealed without welding seam, uniform wall thickness, smooth inner and outer walls, no dead angle, easy to clean, and no sample residue after use.


2. Excellent high temperature resistance and thermal stability. It can run stably for a long time under 1100, with outstanding thermal shock resistance, able to withstand rapid temperature change.


3. Superior chemical inertness. Resistant to corrosion by most acids, corrosive liquids and organic reagents, low impurity ion precipitation, will not contaminate stored samples, suitable for high-purity reagent storage and trace sample analysis.


4. Excellent ultraviolet transmittance. UV light can penetrate the bottle wall, suitable for in-situ photocatalytic reaction, UV irradiation experiment and photochemical synthesis without transferring samples.


5. Low outgassing property under high temperature and vacuum, suitable for inert gas sealed storage and vacuum reaction working environment.


6. Multiple optional bottle mouth structures, including flat mouth, standard ground joint mouth and threaded mouth, can match different stoppers and sealing caps to achieve good sealing effect.


7. Strong customization capability. All bottle dimensions, capacity and bottle mouth forms can be customized to match different laboratory equipment and experiment requirements.

Application Fields

Quartz reagent bottle has irreplaceable advantages in high-end laboratories and industrial testing institutions, covering a wide range of application fields. In analytical chemistry and environmental monitoring industry, it is widely used for storage of trace metal standard solution, water quality test samples, soil digestion stock solution, heavy metal pretreatment reagents. It can effectively prevent ion leaching from the container wall, reduce the blank value of detection, and improve the accuracy of ICP, ICP-MS, AAS elemental analysis results. In photochemistry and new material research field, it serves as in-situ photoreaction container and storage vessel for photosensitive reagents. Ultraviolet light can pass through quartz bottle wall to irradiate the internal solution, realizing photocatalysis experiment, photodegradation test and photochemical synthesis without transferring samples. In high-temperature sample pretreatment and digestion experiment, the quartz bottle can be directly put into heating equipment for high-temperature digestion, heating hydrolysis and thermal aging test, which cannot be realized by plastic and ordinary glass bottles. In semiconductor and photovoltaic industry, it is used for storage of high-purity wet electronic chemicals, wafer cleaning reagents and ultra-pure standard samples. No impurity elements will be released to pollute high-purity chemical raw materials. In geological and mineral analysis field, it is used for preservation of mineral leaching solution, rock sample decomposition liquid and geochemical test samples, avoiding sample contamination caused by container material dissolution. In pharmaceutical research and food safety testing industry, it is adopted for storage of high-purity reference substances, food extract samples, pharmaceutical intermediate solution, suitable for trace impurity detection. In university laboratories and scientific research institutes, it is used for teaching chemistry experiments, long-term preservation of special corrosive reagents and customized high-temperature reaction tests. In addition, quartz reagent bottle can also be used in thermal aging test, gas phase reaction experiment, high-purity liquid preparation and storage, and other scenarios requiring high temperature resistance, corrosion resistance, low ion blank or UV light transmission.