Capillary Tubing for Capillary Electrophoresis

Biotaq Capillary offers a broad array of standard and custom-made bare fused silica capillary tubing at unbeatable prices. As the largest manufacturer of flexible fused silica capillary in China and with customers around the world, our products are used in a wide range of applications including capillary electrophoresis, gas chromatography, DNA sequencing analysis, liquid chromatography (LC), LC-MS, etc.

Our capillary products are made from the highest quality synthetic fused silica. The inner wall of the capillary is treated with ultra-pure gas to ensure its inertness. The capillary is fabricated using a sophisticated draw tower with an intelligent software system to guarantee its geometrical precision. The specially designed polymer mixtures are applied to the capillary to ensure its superior mechanical strength, excellent dimensional evenness, and high temperature endurance. The tightly-controlled manufacturing process and strict QC procedures ensure that the capillary products we produce are of the highest quality.

Product features

  • Synthetic high purity fused silica
  • 100% proof tested for strength at 100 kpsi
  • Operating temperature up to 350°C (See the GC page for capillary that is heat resistant up to 400°C)
  • Excellent flexibility    
  • Excellent chemical durability and surface inertness
  • Dimensionally stable over long lengths
  • Easily cut or cleaved 
  • Low fluorescence background for on-column detection
  • To learn more, see product sheet

Quotes from Our Customers

"We are very happy with the quality of Biotaq’s capillary tubing. By switching to Biotaq, we saved a lot on capillary cost."

Allen Javadi, CEO
Diagnolab, Inc., California

"We have used several hundred thousand meters of the high quality, high performance flexible fused silica capillary tubing from Biotaq to make our GC columns. The product has demonstrated high strength, superior thermal stability, excellent durability, strong chemical resistance at high temperature, and dimensional evenness over long lengths. When studied side by side, Biotaq’s BT capillary is of equivalent performance to the top global brands and is top of the line among all producers in the world."

Dr. De Wei Kong, Vice President
Analytical Technology – The Largest GC Column Supplier in China

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Specifications and Prices
Catalog Number BT025365 BT050365 BT075365 BT100365 BT200365 BT050120 BT075120
Inner Diameter (μm)
25±2
50±3
75±3
100±4
200±6
50±3
75±3
Outer Diameter (μm)
365±10
365±10
365±10
365±10
365±10
120±6
120±6
Length Price
10m
$100
$100
$100
$100
$70
$70
$70
20m
$200
$200
$200
$200
$120
$120
$120
25m
$225
$225
$225
$225
$140
$140
$140
35m
$280
$280
$280
$280
$200
$200
$200
50m
$350
$350
$350
$350
$250
$250
$250
100m
$600
$600
$600
$600
$450
$450
$450
200m
$1,000
$1,000
$1,000
$1,000
$700
$700
$700
200m+

Shipping and handling - U.S. Domestic (FedEx) $35, International (FedEx) $99
Sales tax will be applied to orders shipping to Maryland

Instructions for using the payment button:

  1. Choose the Catalog Number from the first drop down menu.
  2. Choose the length from the second drop down menu.
  3. Click "Add to Cart". A new page will open connecting you directly to PayPal.
  4. The quantity of your order can be adjusted on the PayPal page.
  5. You may pay by credit card or your PayPal account.

Still not sure how to order? Check out the payment guide for step-by-step screenshots and instructions.

If you prefer to email your order, please download the order form.

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