Glass tube

Customization: Accept support

Material: borosilicate

Colour: clear or amber

Description

Neutral Pharmaceutical Glass Tube with Great Hydrolytic Resistance Performance

Two clear glass tubes and three amber glass tubes are displayed.

Pharmaceutical glass tube plays a major role in the manufacturing process of pharmaceutical parental containers.

Neutral Pharmaceutical Glass Tube commonly refers to tubes made from neutral borosilicate glass with a coefficient of mean linear thermal expansion of 5.0. Generally, it has exceptional chemical stability and high heat resistance to thermal shock and sudden temperature change. It is typically used as a raw material by the pharmaceutical packaging companies to manufacture primary packaging products and plays a major role in the manufacturing process of pharmaceutical parental containers.

Both clear and amber glass tubes are available
High chemical resistance
Great hydrolytic resistance
Compliance with ISO 719 standards
Customized glass tubes are available
Special discount for large orders and various promotion campaigns

Features

Main Composition (%)
SiO₂	B₂O₃	Na₂O	BaO		CaO	AI₂O₃
73	10	7	2		1	6
Physical properties
Coefficient of mean linear thermal expansion at (20 °C; 300 °C) acc. to ISO 7991				4.9 × 10^-6 K^-1
Transformation temperature Tg				515 °C
Glass temperature at annealing point logη=13				535 °C
Glass temperature at soft point logη=7.6				783 °C
Glass temperature at working point logη=4				1020 °C
Density p at 25 °C				2.32 g/cm³
Chemical properties
Hydrolytic resistance				Class
Acc. to ISO 719				HGB1
Acc. to USP 25				Type I
Acid resistance				A I
Alkali reistance				A2

Limit Values in the Hydrolytic Resistance Grains Test (Boiling Water Test)

Class	Consumption of hydrolytic acid solution (4.2) per gram of glass grains (ml/g)	Equivalent of alkali expressed as mass of sodium oxide (Na₂O) per gram of glass grains (μg/g)
HGB1	Up to and including 0.10	Up to and including 31
HGB2	From 0.10 up to and including 0.20	From 31 up to and including 62
HGB3	From 0.20 up to and including 0.85	From 62 up to and including 264
HGB4	From 0.85 up to and including 2.0	From 264 up to and including 620
HGB5	From 2.0 up to and including 3.5	From 620 up to and including 1085
Notes: "HGB" stands for the hydrolytic resistance of glass grains according to the boiling water test method.

Benefits

High chemical resistance, neutrality, leak-tightness and stability
Optional glass-tube coating for protection against scratches
Application-specific cutting of tube ends
Protection from contamination during transport and processing into flasks and ampoules

Specification

Outside Diameter Range (mm)	Wall Thickness Range (mm)	Outside Diameter Tolerance (mm)	Wall Thickness Tolerance (mm)
6.0–8.9	0.60–0.95	±0.15	±0.03
	1.00–1.15	±0.15	±0.04
	1.20–1.40	±0.20	±0.04
9.0–13.5	0.50–0.55	±0.13	±0.02
	0.60–1.00	±0.15	±0.03
	1.05–1.35	±0.20	±0.04
	1.40–1.50	±0.25	±0.05
13.6–15.5	0.50–0.55	±0.13	±0.02
	0.60–1.00	±0.18	±0.03
	1.10–1.35	±0.20	±0.04
	1.40–1.50	±0.25	±0.05
15.6–19.9	0.50–0.60	±0.15	±0.03
	0.65–1.35	±0.20	±0.04
	1.40–1.60	±0.30	±0.05
20.0–23.5	0.55–1.20	±0.20	±0.04
	1.25–1.35	±0.24	±0.05
	1.40–1.60	±0.30	±0.06
23.6–24.9	0.55–1.05	±0.20	±0.04
	1.10–1.35	±0.24	±0.05
	1.40–1.60	±0.30	±0.06
25.0–28.0	0.55–0.65	±0.25	±0.04
	1.10–1.35	±0.25	±0.05
	1.40–1.60	±0.30	±0.06
28.1–29.9	0.55–1.05	±0.25	±0.04
	1.10–1.35	±0.25	±0.05
	1.40–1.60	±0.30	±0.06
30.0–32.0	1.00–1.35	±0.30	±0.05
30.0–32.0	1.40–1.50	±0.40	±0.08

Application

Pharmaceutical glass tubes are commonly used to produce high-quality vials, ampoules and cartridges for the primary pharmaceutical packaging made of neutral borosilicate glass.