Art. No.: RBRK01

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Art. No.: RBRK01

Intended use

Electrochemical cell for the derivatisation of aflatoxins B1 and G1 using HPLC.

General Information

The KOBRA® CELL is based on an electrochemical cell, fitted between the HPLC column, the detector which consists of a platinum working electrode and a stainless steel auxiliary electrode, separated by an ion exchange membrane. The principle of the technique is to deliver to the KOBRA® CELL, the mobile phase containing the derivatisation agent precursor, a potassium bromide salt, and aflatoxins. Bromine is then generated electrochemically by applying a constant potential at the working electrode. The resulting electrochemical reaction enables aflatoxins B1 and G1 to be derivatised in-situ to their brominated derivatives, which gives an enhanced fluorescence response.

A KOBRA® CELL measures 10 x 10 x 5 cm.

Your new KOBRA® CELL is covered by warranty for 12 months against engineering or electrical manufacturing faults from the date of purchase and when purchased through an authorised supplier. The warranty does not cover routine membrane exchanges, wear and tear damage or inappropriate use of the unit in contravention of recommended manufacturer‘s instructions.

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Dear customers,

we now provide the documents for our products in an electronic format which include the Instructions for Use (IFU), Safety Data Sheets (SDS), Application notes and the Certificate of Analysis (CoA). For batches placed on the market after 1st June 2023, you can find our documents on the eIFU portal eifu.r-biopharm.com.

Art. NoRBRK01
Test formatEach pack contains:
1 KOBRA® CELL (size 10 x 10 x 5 cm),
1 Power Pack,
2 Electrode Connection Leads,
50 cm x 0.5 mm ID PEEK Tubing,
1 Spare Membrane
LOD (Detection Limit)Information provided is typical LOD obtained by R-Biopharm. Please note that this is dependant on method, LC conditions and equipment used.
B1 0.031 ng/ml
B2 0.016 ng/ml
G1 0.031 ng/ml
G2 0.004 ng/ml
ApprovalsListed in CEN and AOAC Official Methods as a recognised electrochemical derivatisation system