Quartz glass tubes can be categorized into different grades based on their purity and process complexity. The following are common quartz glass tube grade classifications:

1. Standard grade:

- Mainly used for occasions where the purity and optical requirements are not very high.

- It is suitable for general laboratory and industrial applications.

2. Optical grade:

- Higher transparency and lower impurity content.

- Used in the manufacture of optical instruments and optical devices, such as lenses, prisms, etc. 

3. High purity grade:

- Very high purity, suitable for applications with strict requirements on impurity content.

- Commonly used in semiconductor and fiber optic industry.

4. Synthetic grade:

- After special synthesis process, the purity and physical properties are more superior.

- Used in high-end scientific research and precision instrument manufacturing.

5. High temperature grade:

- It is able to withstand extremely high temperatures and has a small coefficient of thermal expansion.

- Commonly used in experiments and industrial applications under high temperature environment. 

6. Ultraviolet transmittance grade:

- High transmittance to ultraviolet rays.

- Used in ultraviolet curing, analysis and other occasions that require ultraviolet transmittance.

7. Doped Grade:

- Quartz glass is doped with specific chemical elements to alter its physical or chemical properties.

- Used in industrial processes with special requirements.

When selecting quartz glass tubes, the appropriate grade should be chosen based on specific application requirements and industry standards. Different grades of quartz glass tubes will vary in price, performance and application areas.

Luverre Quartz is a manufacturer specializing in quartz tubes.We have over 18 years experience with the production of quartz tube, we will be your reliable partner on quartz tube and other quartz items.

Luverre Quartz can produce customized quartz tubes in various shapes, such as spiral, square, round, with processing including cutting, bending, welding, etc., and available in different colors, such as transparent quartz tubes, opaque quartz tubes, milky white quartz tubes, red quartz tubes, and so on.