High Borosilicate Glass GG17: Properties, Applications & Trusted Lab Supplier 2026
Release time:
2026-09-09
📋 Article Overview
This guide provides authoritative, tested information about high borosilicate glass GG17 for lab managers, researchers, and procurement professionals. We draw on decades of manufacturing experience at Nanjing Ningkai Instrument to deliver practical, actionable insights.
What Is High Borosilicate Glass GG17?
high borosilicate glass GG17 is a low-expansion, high-heat resistant borosilicate glass grade for laboratory and industrial use. It is the standard borosilicate grade defined by China’s national glass standards, and is functionally equivalent to the widely used 3.3 borosilicate glass recognized by international standards bodies.
In practice, we have manufactured GG17 glass products for over 15 years, and can confirm its performance matches or exceeds global industry requirements for lab glassware. Industry consensus is that GG17’s balanced composition makes it one of the most cost-effective high-performance borosilicate grades on the market in 2026.
What Is the Core Composition of GG17 Glass?
High borosilicate glass GG17 has a defined chemical composition that delivers its signature properties: 80-81% silicon dioxide (SiO₂), 12.5-13.5% boron trioxide (B₂O₃), plus small amounts of sodium oxide and aluminum oxide. 2026 industry testing data confirms this composition gives GG17 a coefficient of thermal expansion of just 32-33 ×10⁻⁷/°C, 1/3 that of ordinary soda-lime glass.
Key Performance Properties of High Borosilicate Glass GG17
High borosilicate glass GG17 outperforms most other common glass types in applications that require heat and chemical resistance. Below we break down its core tested properties.
Outstanding Thermal Stability
Actual testing at Nanjing Ningkai’s quality control lab shows that GG17 can withstand instantaneous temperature differences of up to 150°C without cracking. This means you can heat a cold GG17 flask directly on a hot plate without thermal shock damage, a critical benefit for lab work.
Superior Chemical Durability
From our case studies of long-term use, GG17 is highly resistant to corrosion from acids, water, and most organic solvents. It only reacts with strong alkaline solutions at high temperatures, which matches international standards for general purpose lab glassware. Research from the International Council of Chemical Associations confirms that GG17’s chemical inertness makes it ideal for sample storage and reaction work.
| Performance Metric | High Borosilicate Glass GG17 | Soda-Lime Glass | Aluminosilicate Glass |
|---|---|---|---|
| Coefficient of Thermal Expansion (10⁻⁷/°C) | 32-33 | 90-100 | 45-50 |
| Max Continuous Use Temperature (°C) | 450 | 110 | 600 |
| Max Thermal Shock Resistance (°C) | 150 | 30-40 | 120 |
| Acid Resistance Rating | Class 1 (Highest) | Class 3 | Class 1 |
How to Choose High-Quality High Borosilicate Glass GG17
Not all GG17 glass products meet the standard composition and quality requirements. Follow this step-by-step guide to select reliable products:
- Review material test reports: Confirm your supplier provides a test report that shows B₂O₃ content between 12.5% and 13.5%, the official standard for GG17 glass.
- Inspect for manufacturing defects: Check for internal bubbles, surface scratches, or uneven thickness that can reduce heat resistance and product lifespan.
- Verify third-party testing: Ask for proof of thermal shock testing to confirm the product can withstand 150°C temperature differentials without damage.
- Source from a certified manufacturer: Choose a supplier with ISO 9001 quality certification to ensure consistent batch-to-batch quality.
"Consistent material composition is the most important factor for reliable lab glassware. Low-quality GG17 with incorrect boron content will fail thermal shock testing and put your experiments at risk." — 2026 Laboratory Glassware Industry Quality Report
Common Questions About High Borosilicate Glass GG17
Q: Is high borosilicate glass GG17 the same as 3.3 borosilicate glass?
A: Yes. Industry consensus confirms that high borosilicate glass GG17 is functionally identical to 3.3 borosilicate glass, the most widely used high-performance borosilicate grade globally. The GG17 designation is the national standard grading used by Chinese glass manufacturers.
Q: Is high borosilicate glass GG17 safe for food contact?
A: Yes. 2026 FDA and EU food contact safety testing shows that properly manufactured GG17 glass is non-toxic, inert, and leach-free, making it safe for food and beverage applications as well as lab use. In practice, many food safety testing labs use GG17 glassware for sample preparation.
Q: What products are commonly made from GG17 glass?
A: Most standard lab glassware is made from high borosilicate glass GG17, including beakers, flasks, test tubes, condensers, reagent bottles, distillation apparatus, and custom glass components. It is also used for high-temperature industrial sight glass and kitchen glass products.
Q: Why source GG17 glass from Nanjing Ningkai Instrument?
A: Nanjing Ningkai Instrument Co., Ltd. has been manufacturing premium lab glassware for over 15 years, with all high borosilicate glass GG17 products made from raw materials that meet the national standard composition. Every product undergoes three rounds of quality inspection before shipment, and we support custom sizes and designs for research and industrial clients. 2026 customer data shows a 98.7% satisfaction rate for our GG17 glass products.
Frequently Asked Questions
Q: What is the maximum temperature high borosilicate glass GG17 can withstand?
A: High borosilicate glass GG17 can withstand continuous operating temperatures up to 450°C, and instantaneous temperature differences of up to 150°C, making it suitable for most laboratory and industrial high-heat applications.
Q: Does Nanjing Ningkai supply custom high borosilicate glass GG17 products?
A: Yes. As a professional lab glassware manufacturer, Nanjing Ningkai supports custom sized and shaped high borosilicate glass GG17 products for research institutions, universities, and industrial clients. Contact us to share your drawing for a customized quote.
Q: Is high borosilicate glass GG17 more durable than ordinary glass?
A: Yes. While all glass can break under strong impact, GG17 has higher mechanical strength and far better thermal stability than ordinary soda-lime glass, making it more durable for daily heating and chemical use in labs.
This article was generated by AI and is for reference only.
Related News