Samuel J. LaBonia


Sam is President of Cornerstone Laboratories, LLC. He has over 20 years experience in the environmental, food chemistry, and industrial fields. Sam's expertise lies in Method Development, Method Validation, Project Management, Practical Application, and GC/MS.

Sam is a member of the American Chemical Society (ACS), the American Oil Chemists Society (AOCS), American Organization of Analytical Chemists (AOAC), American Spice Traders Association (ASTA), and the American Public Health Association (APHA).

Cornerstone Laboratories, LLC
Express ALS
& Cornerstone Laboratories

A partnership based on Quality & Service


Express ALS and Cornerstone Laboratories joined forces in August 2009 to provide analytical testing services on a global scale. Clients old and new can now order their testing services and get their results through Express ALS' online interface.

We will continue to be here to answer questions and give you the support you need. We will help you decide which services you need if you are unsure, but the online interface gives you the ability to order and pay for the services easily. Express ALS' online component allows you to recieve the benefit of the most competative pricing available through a laboratory you know and trust.

Our commitment to quality and customer service creates a comfort level unparalleled in the industry.

Quanta Lab


Quanta Lab brings Microbiology expertise to
Express ALS


Express ALS and Quanta Lab of Selma, Texas joined forces in February 2010 to provide microbiological testing services to our customers. Clients old and new can now order their micro testing services and get their results through Express ALS' online interface.

Quanta Lab is fully committed to food safety truly from farm to fork, beginning with agricultural products all the way to the final packaged product. As your partner we can assist with all aspects of QC/QA programs and provide for your testing needs as well.

We offer a wide variety of testing to suit all your needs; some examples are listed below:

PATHOGEN DETECTION
Listeria spp., Listeria monocytogenes, Escherichia coli O157:H7, Salmonella spp., Bacillus cereus, Campylobacter spp., Staphylococcus aureus, Clostridium perfringens, Shigella, Vibrio spp.

QUANTITATIVE SPOILAGE/INDICATOR DETECTION
Aerobic Plate Count, Anaerobic Plate Count, Total coliform count, Yeast & Mold count, Generic Escherichia coli count, Enterobacteriaceae count, Pseudomonas spp., Heterotrophic Plate Count, Lactic Acid bacteria count, Psychrotrophic Plate Count, Mesophilic aerobic/anaerobic spore formers, Thermophilic aerobic/anaerobic spore formers, Yeast & Mold count.

Our team is dedicated to the highest quality of microbiological services and exceptional customer care.

Quanta Lab Certifications