Neutral Borosilicate Glass Tube

Neutral Borosilicate Glass Tube (Tube diameter: from 7.00mm - 33.00mm)

Our main markets are both domestic and oversea pharmaceutical industries. With our high quality products and the best services, we are contributing to business improvement for our customers Our core business are various vials, ampoules and USP Type I 5.0 glass tubing as well as semi-neutral glass tubing with expansion 7.0. We development and engineering investments in big sum support growth in existing business and entirely new business. We keep continuing to look for new rising business points.




And the difference between the low borosilicate Pyrex ampoule
1. The most important difference is that its chemical properties: the inner surface of the water with national standards of low borosilicate vial is 2.6mm, the borosilicate vial surface water national standard is 1.3mm, simply say "water" is the follow-vial bottle plant adsorption process, such as potassium and sodium in the wall of the vial of harmful alkaline oxides, oxides, the less water the better, water is good for a variety of indicators pH, pH, clarity and stability is very good medicine.
2. Physical properties: boron tolerance vial size is very small, such as 16 standard diameter tolerance of plus or minus 0.14mm, color, crystal clear, very good strength, and production equipment to better match; low borosilicate tolerance of large and Pipi unstable, such as 16 standard diameter tolerance of plus or minus 0.3mm, greenish color, it is difficult to import equipment or high-end equipment to match.




1. Identification of neutral glass with low borosilicate glass, soda lime glass main difference is that it has good thermal and chemical stability, thermal expansion coefficient of the online content and boron oxide and borosilicate glass is not the same. Accordingly, the identification of the project is scheduled for:

(1) linear thermal expansion coefficient: is one of the main physical properties of glass, which determines the thermal stability of the glass, the glass that can withstand extreme changes in temperature capability, and the linear thermal expansion coefficient is mainly determined by the chemical composition of the glass. Therefore, the linear thermal expansion coefficient as the authentication performance can be used to control properties of the glass, but also reflects the type of glass component. Now linear thermal expansion coefficient of glass is neutral to no more than 5 × 10-6K-1 (20 ºC ~ 300 ºC).

(2) the content of boron trioxide: It is the main component of the glass to improve the thermal and chemical stability, and in a certain range, with the increase of its content, the better the properties of the glass. Thus, the determination of boron trioxide content as the authentication of items, used to control the properties of the glass, but also reflects the type of glass component. Now neutral glass B2O3 content is set at not less than 8% (g / g).

2,121 ºC particles resisfance Methods glass particles at 121 ºC water resistance assay and classification (YBB00252003), indicators based on material properties as one. Control of chemical stability of the glass material.

3,98 ºC particles resisfance Methods glass particles at 98 ºC water resistance assays (YBB00362004) were measured. 98 ºC water resistance particle method is an important method is widely used in international inspection glass water resistance level, fine grading, wide range. Neutral glass shall comply with the requirements of HGB1 level. Control of chemical stability of the glass material.

4, the inner surface of the water resistance of the methods adopted within 121 ºC surface water resistance test methods and classification (YBB00242003), the indicator reached HC1 level. Control of chemical stability of glass bottles.

5, the main test acid resistance of acid etching of glass that can withstand the extent to quantitatively determine the acid level. The first method is the gravimetric method, the method according to the glass resistant to attack by boiling hydrochloric acid assay (YBB00342004) first assay, based on the surface area of the glass unit to determine how much weight loss levels. Neutral glass shall conform to the requirements of Class 1. The second method for flame spectroscopy, in accordance with the glass resistant to attack by boiling hydrochloric acid assay (YBB00342004) The second method. According to the amount of alkali oxides unit surface area of the separated glass to determine eligibility. Neutral glass should be less than or equal 100μg / dm2. Control of chemical stability of glass bottles.

6, alkali resistance major test for mixed alkali glass etching can bear to quantitatively determine the level of alkali glass. Measured according to the method of mixed alkali glass of boiling water erosion resistance assays (YBB00352004), neutral glass shall comply with the requirements of two. Control of chemical stability of glass bottles.

7, internal stress assay method using internal stress (YBB00162003), indicators follow ampoule (GB 2637-1995). Annealing process level control glass bottles.

8. The method of vertical shaft runout deviation assay (YBB00192003), the indicators are in use ampoule (GB 2637-1995). Control smoothness and overall symmetry bottom of the container.

9. The method in use force to break the ampule (GB 2637-1995), indicators using ISO9187-1: 2000 (E). Assurance requirements used to prevent breakage.

10, arsenic, antimony, lead, cadmium extraction method using arsenic, antimony, lead, cadmium leaching amount of test methods (YBB00372004), arsenic, antimony, lead, cadmium leaching limit content as: As≤0.2mg / L; Sb ≤0.7mg / L; Pb≤1.0mg / L. Ensure the safety of the use of the ampoule. According to 2005 audited decided to increase the amount of leaching of cadmium limits: Cd≤0.25mg / L




Tony Zhu
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Manager of Export Dept.

Baytree Packaging Machinery Co. Limited
Exp. Room1101, Building No.8, Lane875 Huanlin Rd(E), Shanghai, China Zip: 200123
Tel: +86 21 50656741;  Fax: +86 21 50656754