For prevailing quality requirements

eNable NSV51 glass tubing is the right choice for primary pharmaceutical containers that require a good quality-price balance.

eNable NSV51 glass tubing is controlled for critical cosmetic parameters. The inspection of key dimensional quality attributes supports a smooth loading and forming process, as well as strong mechanical durability. Camera inspections are 100% in-line and supported by statistical process control.

AQLs for cosmetic and dimensional parameters fulfill prevailing quality standards. All drawing sites are ISO 15378 (including 9001) certified. eNable NSV51 glass tubing is compliant with leading Pharmacopoeias (EP, USP, JP), fulfills ASTM 438-92, and meets the requirements for hydrolytic resistance and arsenic extraction.

Fast and reliable converting line performance
Compliant with regulatory and quality standards

Specifications

General

Glass type	Expansion	Hydrolytic resistance	Color
Borosilicate	51	Type I	Clear

Standard dimensions

Outer diameter	Wall thickness	Length
6.0-19.9 mm	0.45-1.10 mm	1,400-1,675 mm
20.0-27.9 mm	0.55-1.70 mm	1,400-1,675 mm
28.0-30.0 mm	0.90-1.70 mm	1,400-1,675 mm

Tolerances available upon request

Chemical composition

Symbol	Value*
SiO₂	74.5%
B₂O₃	11%
Al₂O₃	6%
Na₂O	7.0%
K₂O	0.8%
CaO	0.4%

* Typical average values

Physical properties

Property	Value*
Working Point	1,090 °C
Softening Point	788 °C
Anneal Point	568 °C
Coefficient of Thermal Expansion	51 cm/cm x 10^-7/°C
Density	2.31 g/cm³

* Typical average values

Chemical durability

Standard	Classification
USP Powdered Durability – Chapter <660> Current Edition, Vol. 1	Type I
USP Powdered Durability – Chapter <660> Current Edition, Vol. 1 EP Hydrolytic Resistance – Chapter 3.2.1, Current Edition, Vol. 1	Type I
JP Containers for Injection – Current Edition	Passes
ISO 695 Alkali Resistance	Class A2
DIN 12116 Acid Resistance	Class S1

Arsenic extraction & Heavy metal requirements

Standard	Status
Arsenic extraction requirement according to USP and EP	Compliant
Heavy metal requirements set forth in EU Packaging, Packaging Waste Directive 94/62/EC, and CONEG Toxics in Packaging regulations	Compliant

Downloads

Glass Tubing

Pharmaceutical Packaging

Brochures

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Frequently Asked Questions (FAQs)

How does the coefficient of expansion of glass affect its suitability for pharmaceutical packaging?

The "thermal expansion coefficient" typically ranges between 5.0 × 10^-6 /°C and 10.0 × 10^-6 /°C, depending on the specific type of glass. This coefficient indicates the extent to which a unit length of glass will expand or contract with a one-degree change in temperature, expressed in terms of per degree Celsius (°C).

What does "glass hydrolytic resistance" mean?

In the context of glass used for pharmaceutical packaging, hydrolytic resistance is a crucial property. It indicates the glass's ability to maintain its integrity and prevent leaching of ions or other substances into the contained pharmaceutical product when in contact with water or aqueous solutions. Glass with high hydrolytic resistance is less prone to chemical interactions and is therefore preferred for packaging sensitive pharmaceutical formulations.

Why is amber-colored glass tubing used for pharmaceutical packaging?

Amber-colored glass tubing is often used to manufacture vials, ampoules, and bottles for packaging light-sensitive medications. The amber color of the glass provides protection against ultraviolet (UV) light, which is known to degrade light-sensitive pharmaceuticals, thus ensuring the stability and potency of the enclosed medications.