Clear Ground Joint Round Bottom Borosilicate Glass Test Tube

Product Description

 

Product Description

1.Factory Price Customized Clear Ground Joint Round Bottom High Borosilicate Glass Test Tube for Lab Test
2.Material: glass test tube is made of borosilicate glass, heat resistant.

Material introduction:

 

Borosilicate glass is a kind of transparent colorless glass, the transmission wavelength is between 300 ~ 2500 nm, the transmittance is more than 90%. The coefficient of thermal expansion is 3.3.

Acid and alkali resistance, high temperature resistance of about 450ºC. Suitable for lighting, chemical, electronic, high temperature equipment, etc.

Borosilicate glass has excellent chemical and thermal shock resistance and high impact resistance.

Glass instruments are used for experiments, measurement, observation and inspection of various glass products in the fields of life, production and science and technology. Glass instruments are widely used in laboratories, because glass has high chemical stability, thermal stability, good transparency, a certain mechanical strength and good insulation performance.

Glass instruments made of the excellent performance of glass are widely used in various laboratories, such as chemical laboratories, medical laboratories, biological laboratories, scientific research laboratories and teaching laboratories.

 

Technical parameters

 

Mechanical behavior	Standard values	Mechanical behavior	Standard values
Density	2.2g/cm3	Specific heat (20 ~ 350 °C)	670J/kg.°C
Compressive strength	1100Mpa	Thermal conductivity (20 °C)	1.4W/m.°C
Young's modulus	72000Mpa	Index of refraction	1.4585
Modulus of rigidity	Modulus of rigidity	Thermal processing temperature	1750~2050°C
Mohs hardness	5.5~6.5	Short-term use temperature	1300°C
Transformation point	1280°C	Long-term use temperature	1100°C
Softening Point	1780°C	PPM grade	Controlled 10/20/100 PPM
Annealing point	1250°C	Thickness	0.5 MM-40 MM

 

Company Profile

OUR OFFICE

Based on quartz and ceramics, after more than 20 years development, Highborn Group has grown up to a modern enterprise in research, manufacture, processing and sales. We are mainly supplying quartz glass, cuvette, precise ceramics, porous ceramics, thick film resistor, ozone generator, metal fiber felt, polyester fiber cotton products and we have been offering our products and services to our clients from more than 108 countries or regions.

PRODUCTION WORKSHOP

Highborn Group is paying great attention to the product quality and technology research all the time. We have passed ROHS, CE, MSDS tests and also the ISO9001 authentication. We have 8 registered trademark and 25 patents. Also in 2020, we won the title of China High-tech Enterprise and Jiangsu Private Science and Technology Enterprises.

Certifications

HIGH-TECH ENTERPRISE,CE,ROHS,MSDS,ISO 9001 CERTIFICATIONS
 

 

 

Our Service

QUALITY SERVICE

We can offer not only qualified products, we can also supplying quality service including design, development, export and after sales. With our professional skills, advanced technology and quality material, we can design and develop new products or new applications according to the clients' expectation. We have custom-made new products and promoted the specifications for more than 1000 clients, and we have gotten good reputation from our clients.

 

produce per customers' request such as design & package & printing logo	After-sales service. Quick response, 100% feedback.	Professional package to ensure the transportation with no goods damaged.
Sampling Service.	100% good reputation.	OEM service.

Our mature and perfect production service system obtain customer satisfaction.

Packaging & Shipping

 

 

FAQ

1:What products and service can you offer us?
Answer: With the development more than 20 years, now we have 6 business division and we are supplying Quartz Glass (Tube, Rod, Plate and customized parts), optical glass and cuvette, and also various precise ceramics, porous ceramics and refractory ceramics. We have the full processing line for ceramic thick film resistors, far infrared ceramic glass heating panel, quartz tube/ceramic plate ozone generator, porous metal fiber felt and polyester fiber cotton products. For all the products, we can design and customize according to the clients' demand.

2: Before mass order, can you offer samples? How will you charge for them?
Answer: We are willing to offer samples to lower your purchasing risk. Generally, if from inventory, we can deliver out within 3days, however if need processing, we can deliver out within 15days. For some difficult items, the delivery time will be decided by its grade of difficulty. For some low value items, we can offer free sample, however we would like you to afford the freight cost. For customized products, we need to charge the developing cost.

3: What test report or certificate can you offer? What achievements have you made in research and development? Answer: Till the end of 2021, we have passed many ROHS, CE, MSDS tests and also the ISO9001 authentication. We have 8 registered trademark and 25 patents. Also we won the title of China High-tech Enterprise and Jiangsu Private Science and Technology Enterprises.

4: Do you have any agent in our area? Can you export your products directly?
Answer: Till the end of 2021, we haven't authorized any company or person as our regional agent. From 2008, we have the export qualification and professional export team, and till the end of 2021, we have exporting our products to more than 108 countries and regions, and our clients can contact us and purchase our products or service directly.

5: If the quality can not meet the requirement or any loss during the freight, how should we do?
Answer: We have strict QC test and professional QC team. We are always offering qualified products. If anything goes wrong, the quality can not meet requirement on the contract, we will reproduce the qualified products or refund the payment. We have the professional packing team and will pack the product in safe package for long distance delivery. If any loss during the freight, we hope you can assistant us to claim from the logistics company and we will arrange the replacement accordingly.