US Regional Representatives

Excellent sales and customer service are hallmarks of UCT’s support of its customers.  UCT has regional sales representatives to quickly respond to your inquiries.  Click on the buttons below to locate your local representative.


Jacque Riddick

Canada, Mexico, Central & South America, Caribbean Islands, South Africa, Asia, Australia, & New Zealand regions

Representative Information

215-781-9255 ext. 135

Hocine Omari

Europe, North Africa, Middle East, & India

Representative Information

215-781-9255 ext. 145

Adrian Redmond


Representative Information

+353 53 919 8993


UCT PSA Sorbent Cited in Sulfonamides and Trimethoprim Fish Analysis Paper

Tuesday, March 20th, 2018

Brazil is one of the largest veterinary markets in the world, and aquaculture, in particular fish farming, is the fastest growing sector of animal food production in the country. In fish farming, antimicrobials, including sulfonamides, are used for the treatment of bacterial diseases. Sulfonamides belong to an important group of synthetic antimicrobial agents that have been used in human and veterinary medicine for over 60 years. Recently, these drugs have been extensively employed in animals intended to produce food for human consumption.

In a recent paper authored by Katia Nunes et al., published in Journal of Analytical Methods in Chemistry (, a multiresidue method for detecting and quantifying sulfonamides (sulfapyridine, sulfamerazine, sulfathiazole, sulfamethazine, sulfadimethoxine, sulfamethoxazole, and sulfamethoxypyridazine) and trimethoprim in tilapia fillet (Oreochromis niloticus) was developed and validated using UCT's QuEChERS clean-up products in conjunction with liquid chromatography- mass spectrometry (LC-MS/MS).