High-Precision Borosilicate Solid Glass Beads

  • High precision borosilicate glass beads (+/- 0.05 mm) ideal for various laboratory applications;

  • Highly spherical with no irregular shapes or defects;

  • Polished surfaces with no dirty spots or scratches;

  • Etched surfaces are also available on a customized basis upon request;

  • 500 g (1.1 lb) per package unless specified otherwise

  • Packed in vacuum bags and protected with foam and bubble wraps for transportation and passed 1-meter drop test;

  • In-stock sizes: 3 mm, 4 mm, 5 mm, and 6 mm;
    Customizations are available for all other sizes below 3 mm and above 8 mm
    (Min. order for customized orders: 1 kg/2.2 lb, lead time: 3 weeks).

  • Laboratory borosilicate glass beads 3mm with polished and/or etched surfaces are frequently used for DNA/RNA-related applications.


Key Data


3 mm

4 mm

5 mm

6 mm

High-Precision Borosilicate Beads

High-Precision Borosilicate Beads

Borosilicate Beads

Borosilicate Beads

High-Precision Borosilicate Beads

High-Precision Borosilicate Beads

Borosilicate glass is known for its coefficient of linear thermal expansion within (3.3 ± 0.1) × 10-6/K. It is a special glass material with a low expansion rate, high-temperature resistance, high mechanical strength, high light transmittance, and high chemical stability. Due to its excellent performance, it is widely used in solar energy, chemical industry, pharmaceutical packaging, electric light source, laboratory applications, and other industries. 

In addition to the excellent performance of the borosilicate glass material, our borosilicate glass beads are highly spherical in shape and highly precise in size. Through repeated polishing and lengthy processing, these beads are nearly perfectly uniform. This is vitally important, as many applications require high reproducibility. Wide size distributions, strange shapes, and unstable light transmissions always inevitably lead to unreliable results. This is exactly the reason that we keep our borosilicate glass beads consistently uniform in shape and size from batch to batch.


Daily Exchange Rates
(updated every 12 hr)

Please visit our online store or Amazon stores for instant purchases or place invoiced orders (Net 30) with us. We typically ship out our in-stock items both domestically and internationally within 1 business day after the order placement.

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Please note:

No duties or additional taxes for the orders delivered to Canadian, the US, the UK, and the EU addresses, regardless of the selected sales channel. The value-added tax (VAT) is zero-rated for EU-based clients with locally registered VAT numbers in Europe; otherwise, 20% UK VAT is charged for orders delivered from the UK to clients based in the EU without the VAT registration. Sales tax is also zero-rated for orders delivered to the US and other international destinations.

Orders destined for Canada will be shipped from the Canadian headquarters.

Orders destined for the US will be shipped from one of our two US offices.

Orders destined for the UK and the EU will be shipped from the UK office.

For other International shipping addresses, the recipients are responsible for local duties and taxes.


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