How To Choose Between Borosilicate And Soda-Lime Glass For Laboratory Use
Choosing between borosilicate glass and soda-lime glass depends on how the glassware will be used in the laboratory.
Borosilicate glass is usually the better choice for heat, chemical exposure, repeated washing and reusable laboratory workflows. Soda-lime glass can still be suitable for lower-cost, room-temperature and non-critical applications.
Which Glass Should You Choose?
Choose borosilicate glass when the glassware will be heated, cooled, autoclaved, exposed to laboratory chemicals, washed repeatedly or used in a critical workflow. This makes borosilicate a strong choice for beakers, Erlenmeyer flasks, volumetric flasks, measuring cylinders, reagent bottles and other reusable scientific glassware.
Choose soda-lime glass only where the application is simple, room-temperature, low-risk and cost-sensitive. Soda-lime glass can be useful for some basic containers and non-critical uses, but it is generally not the preferred choice for heat, aggressive chemicals or precision analytical work.
How To Choose Between Borosilicate And Soda-Lime Glass
The best glass type depends on the application. Instead of selecting on price alone, consider temperature changes, chemical exposure, cleaning method, accuracy requirements and how often the glassware will be reused.
Choose Borosilicate If
- •The glassware will be heated or cooled
- •The item may experience sudden temperature changes
- •Chemical resistance is important
- •The glassware will be washed, sterilised or reused often
- •The workflow involves valuable samples or analytical results
Consider Soda-Lime If
- •The application is room-temperature only
- •The use is simple, non-critical and low-risk
- •The glassware will not face strong acids, alkalis or solvents
- •Budget is the main priority
- •The item is used for basic holding, dry storage or demonstration
Ask Before Buying
- •Will the glassware be heated?
- •Will it be autoclaved or washed repeatedly?
- •Will it contact acids, alkalis, solvents or reagents?
- •Is accuracy or sample integrity important?
- •Is long-term durability more important than upfront price?
Borosilicate Vs Soda-Lime Glass At A Glance
If you want a quick answer, this table shows where borosilicate glass is usually the better choice and where soda-lime glass may still be suitable.
| Criteria | Borosilicate Glass | Soda-Lime Glass | Better Choice |
|---|---|---|---|
| Reusable Lab Glassware | ✓ Commonly preferred | – Can suit limited use | Borosilicate |
| Heat Resistance | ✓ Better for heating and temperature change | – Less resistant to thermal shock | Borosilicate |
| Chemical Resistance | ✓ Stronger resistance for lab use | – More limited depending on use | Borosilicate |
| Repeated Cleaning | ✓ Better for washing and reuse | – Better for lower-demand use | Borosilicate |
| Lower Upfront Cost | – Usually higher upfront cost | ✓ More economical | Soda-Lime |
| Non-Critical, Room-Temperature Use | ✓ Suitable, but may be more than needed | ✓ Often suitable | Depends On Application |
What Is Borosilicate Glass Made Of?
Borosilicate glass is a high-performance glass made mainly from silica and boron oxide. The boron oxide helps create a glass structure with low thermal expansion, which means the material is less likely to crack when exposed to sudden temperature changes.
In laboratory glassware, the most common grade is borosilicate 3.3. The “3.3” refers to the approximate coefficient of linear thermal expansion, commonly written as 3.3 x 10-6 K-1. This low expansion is one of the main reasons borosilicate is widely used in scientific glassware.
For a deeper explanation of borosilicate glass properties, types and laboratory uses, read our guide to borosilicate glass for laboratory use.
Common Borosilicate Uses
- •Laboratory beakers for heating, mixing and preparation
- •Erlenmeyer flasks for swirling, culturing and titration workflows
- •Volumetric flasks for accurate standard solution preparation
- •Measuring cylinders for routine liquid measurement
- •Reagent bottles, test tubes and storage vessels
What Is Soda-Lime Glass?
Soda-lime glass is the most common type of everyday glass. It is made mainly from silica, soda and lime, and is widely used in windows, bottles, jars, containers and general-purpose glass products.
In laboratories, soda-lime glass may appear in lower-cost glassware, disposable items, watch glasses, sample containers and simple room-temperature applications. Its main advantage is affordability, but it has lower resistance to rapid temperature change than borosilicate glass.
This means soda-lime glass can be suitable for some routine laboratory tasks, but it should be selected carefully when chemicals, heating, cooling, washing cycles or precision work are involved.
Borosilicate Glass Vs Soda-Lime Glass Comparison
The main difference between borosilicate glass and soda-lime glass is how they perform under heat, chemical exposure and repeated laboratory use. The table below gives a practical comparison for laboratory glassware selection.
| Feature | Borosilicate Glass | Soda-Lime Glass | Lab Selection Guidance |
|---|---|---|---|
| Main Composition | Silica and boron oxide based glass | Silica, soda and lime based glass | Borosilicate is generally preferred for scientific glassware. |
| Thermal Shock Resistance | High | Lower | Choose borosilicate for heating, cooling and temperature changes. |
| Chemical Resistance | High resistance to many common laboratory chemicals | Suitable for some mild applications, but less resistant overall | Use borosilicate where chemical compatibility and sample integrity matter. |
| Repeated Washing And Sterilisation | Better suited to repeated cleaning cycles | More suitable for lower-demand use | Borosilicate is usually better for reusable lab workflows. |
| Common Lab Uses | Beakers, Erlenmeyer flasks, volumetric flasks, measuring cylinders, bottles and tubes | Watch glasses, low-cost containers, some disposable or room-temperature items | Match the material to the risk level of the application. |
| Cost | Higher upfront cost | Lower upfront cost | Consider lifecycle cost, not just purchase price. |
Why Borosilicate Glass Is Preferred In Laboratories
1. Better Thermal Shock Resistance
Borosilicate glass expands less when heated, which helps reduce stress during heating, cooling and washing. This is important for glassware used on hotplates, in ovens, in autoclaves or around changing temperatures.
2. Strong Chemical Resistance
Borosilicate glass is widely used because it resists many common acids, alkalis, solvents and reagents. This helps reduce the risk of unwanted interaction between the container and the sample.
3. Better Reuse And Cleaning Performance
Many labs reuse glassware daily. Borosilicate glass is well suited to repeated cleaning, rinsing and sterilisation routines when handled correctly.
4. Greater Confidence In Critical Workflows
For analytical, research, pharmaceutical, environmental and quality control workflows, the glassware material can affect reliability. Borosilicate is often chosen where repeatability and sample integrity matter.
5. Better Long-Term Value
Although borosilicate glass usually costs more upfront, it can be the better value in laboratories where glassware is reused frequently or exposed to demanding conditions.
6. Widely Available In Lab Forms
Borosilicate glass is commonly available across beakers, flasks, cylinders, bottles and other scientific glassware, making it easy to standardise across a laboratory.
When Can Soda-Lime Glass Be Used In A Laboratory?
Soda-lime glass can be suitable when the application is simple, low temperature and non-critical. For example, it may be used for some watch glasses, basic containers, demonstration items, dry storage or low-risk sample handling where the material will not face strong thermal or chemical stress.
However, soda-lime glass is generally not the best choice for direct heating, rapid cooling, strong chemicals, repeated autoclaving, valuable samples, precision analytical work or workflows where contamination risk must be minimised.
The simplest rule is this: if the glassware will be heated, chemically challenged, reused often or used in a critical measurement workflow, borosilicate is usually the better choice.
Which Laboratory Glassware Should Usually Be Borosilicate?
The right glass type depends on how the item will be used. The sections below cover common laboratory glassware and when borosilicate is usually the better option.
Beakers
Borosilicate beakers are suitable for heating, mixing, solution preparation, decanting and general wet chemistry. Beakers are not precision volumetric instruments, but borosilicate improves durability in demanding daily use.
Browse BeakersErlenmeyer Flasks
Borosilicate Erlenmeyer flasks are commonly used for swirling, mixing, titrations, media preparation and microbiology workflows where chemical resistance and repeated washing are important.
Browse Erlenmeyer FlasksVolumetric Flasks
Volumetric flasks are used for preparing standard solutions and accurate fixed volumes. Borosilicate glass supports chemical resistance, clarity and dimensional stability in analytical workflows.
Browse Volumetric FlasksMeasuring Cylinders
Measuring cylinders are used for routine liquid measurement. Borosilicate cylinders are useful where durability, chemical resistance and frequent washing are required.
Browse Measuring CylindersWhat 3.3 Means
- •Refers to low thermal expansion
- •Commonly written as 3.3 x 10-6 K-1
- •Widely used for laboratory glassware
- •Useful where thermal shock resistance matters
What Does Borosilicate Glass 3.3 Mean?
Borosilicate 3.3 is a common laboratory grade of borosilicate glass. The 3.3 value refers to the approximate coefficient of linear thermal expansion, which is much lower than ordinary soda-lime glass.
In practical terms, this means borosilicate 3.3 glass is better able to tolerate temperature changes without cracking. This is why it is widely used for laboratory beakers, flasks, cylinders and bottles that may be heated, washed, sterilised or reused regularly.
Borosilicate 3.3 is not unbreakable, but it provides a strong balance of thermal resistance, chemical resistance, clarity and cost for everyday laboratory use.
Is Borosilicate Glass Chemically Inert?
Borosilicate glass is often described as chemically inert in normal laboratory use because it has strong resistance to many acids, alkalis, solvents and reagents. This is one of the reasons it is preferred for scientific glassware and chemical handling.
However, no glass material is universally compatible with every chemical under every condition. Chemical suitability depends on the reagent, concentration, temperature, exposure time and cleaning method.
For critical analytical work, trace-level testing or aggressive chemical exposure, laboratories should confirm material compatibility before selecting glassware.
Explore More Laboratory Glassware Resources
Glass type is only one part of laboratory glassware selection. Laboratories also need to consider shape, volume, accuracy class, cleaning method and intended application.
Borosilicate Glass Guide
Learn what borosilicate glass is, what it is made of and why it is commonly used in laboratory glassware.
Read The Borosilicate GuideLaboratory Glassware Guide
Compare common glassware types, including beakers, flasks, measuring cylinders and precision volumetric glassware.
Read The Glassware GuideGlassware Cleaning Guide
Understand how proper glassware cleaning supports accurate, repeatable and contamination-free laboratory results.
Read The Cleaning GuideBorosilicate Glass Vs Soda-Lime Glass FAQs
What Is The Difference Between Borosilicate Glass And Soda-Lime Glass?
Borosilicate glass is made with boron oxide and has lower thermal expansion, better thermal shock resistance and stronger chemical resistance. Soda-lime glass is the most common everyday glass and is generally lower cost, but it is less suitable for demanding laboratory use.
Is Borosilicate Glass Better For Laboratory Use?
Yes, borosilicate glass is usually better for laboratory use where heat, chemicals, washing, sterilisation or reuse are involved. It is widely used for beakers, flasks, cylinders, bottles and other laboratory glassware.
Can Soda-Lime Glass Be Used In Laboratories?
Yes, soda-lime glass can be used in some laboratory applications, especially simple, room-temperature and non-critical uses. It is generally not recommended for direct heating, rapid temperature changes, aggressive chemicals or high-value analytical workflows.
What Does Borosilicate Glass 3.3 Mean?
Borosilicate glass 3.3 refers to a common laboratory grade with a low coefficient of linear thermal expansion, commonly written as 3.3 x 10-6 K-1. This low thermal expansion helps improve resistance to thermal shock.
Is Borosilicate Glass Chemically Inert?
Borosilicate glass is often described as chemically inert in normal laboratory use because it resists many common laboratory chemicals. However, chemical compatibility still depends on the chemical, concentration, temperature and exposure time.
Is Borosilicate Glass Unbreakable?
No. Borosilicate glass is more resistant to thermal shock than ordinary glass, but it can still break if dropped, chipped, scratched or exposed to severe uneven stress. Inspect laboratory glassware regularly and discard damaged items.
Is Borosilicate Glass Worth The Extra Cost?
For most reusable laboratory glassware, borosilicate is usually worth the extra cost because it offers better durability, chemical resistance and performance under temperature change. Soda-lime glass may be a lower-cost option for simple, non-critical use.
Which Lab Glassware Is Commonly Made From Borosilicate Glass?
Beakers, Erlenmeyer flasks, volumetric flasks, measuring cylinders, reagent bottles, test tubes and other common laboratory glassware are often made from borosilicate glass.
Need Help Choosing The Right Laboratory Glassware?
Talk to John Morris Group about borosilicate glassware, soda-lime glassware, beakers, volumetric flasks, Erlenmeyer flasks, measuring cylinders and laboratory glassware selection for Australian labs.
Contact UsCall 1300 501 555 or contact John Morris Group for quotation and technical support.
