New Forms of Empty Columns

2017-11-29 14:57:00

We are delighted to announce the immediate availability of two new forms of empty columns for laboratory usage: the rimless ones, the prolonged one.

Rimless Ones

Designed for automation & high-throughput applications, these empty rimless columns come with five sizes (1 mL, 3 mL, 6 mL, 12 mL and 20 mL). Their applications depend on the sorbents and frits you choose, e.g. solid-phase extraction (SPE), solid-phase synthesis. Custom options are available, of course.

empty rimless columns

The empty rimless columns feature compact configuration and minimal footprint. Compared to rimmed columns, rimless columns have significant advantages in high-throughput applications:

  1. Min. distance between columns is 30% less. This requires shorter displacement of robotic arms, thus improves throughput.
  2. Footprint is 50% less. This makes it possible to design compact and portable systems.
empty rimless columns

Click here to view biocomma® empty rimless columns.

Prolonged One

The empty long-body AC column comes with only one size (6 mL), and is recommended for affinity chromatography (AC). Its prolonged column design makes it possible for customers to pack a higher bed of chromatographic media, which is favorite for improving separation performance.

Each empty long-body AC column comes with one tube, one upper cap, one bottom cap, one upper frit and one bottom frit. The tube body is 120 mm in length and 10 mm in outer diamerter. By contrast, a traditional empty AC column (6 mL) is 68 mm in length and 13 mm in outer diamerter. We can see their difference between the 6 mL long-body column (upper) and the 6 mL traditional column (bottom) in the figure below.

empty long-body AC column

Click here to view biocomma® empty long-body AC columns.

Old Ones

In addition to these new products, Biocomma has been providing customers with other empty columns.

Empty straight-barrel cartridges / columns, which normally work under gravity flow, positive pressure or vacuum, are widely used in solid-phase extraction (SPE), purification of proteins and nucleic acids, desalting of synthetic oligonucleotides, etc.

empty straight-barrel columns

Empty Luer-inlet columns, which can be operated under positive pressure via peristaltic pumps, are used in many areas as the straight-barrel columns.

empty Luer-inlet columns

Empty spin columns, which are designed to work with centrifuges, are typically used in nucleic acid purification based on silica gel adsorption.

empty spin columns

Empty FPLC columns, which are HiTrap-like and compatible with GE AKTA systems, are used in purification of tagged proteins, desalting of proteins and nucleic acids.

empty FPLC columns

Besides, we also offer other forms of empty columns and multi-well plates. We'd like to cover them in next articles.

Biocomma is now expending its laboratory solid-liquid separation portfolio, offering both frits and empty columns for various usage. A new brochure of these products will be available soon. Customers are welcome to request a copy of the upcoming brochure. For more information, feel free to contact Biocomma via

About Biocomma

Biocomma Limited, founded in 2006, is a leading manufacturer of filtration, sample preparation and life science products. As an ISO9001:2015 certified company, Biocomma owns one filtration facility, two cleanrooms and one research & development center, supplying more than 1,500 products. For the past eleven years, we have served over 4,000 customers and provided OEM and customization services for dozens of well-known brands around the world.

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