Chestnut Labs offers a wide variety of microbiological and proximate analytical chemistry testing services. Accurate and reliable test results are generated by our dedicated staff of experienced professionals. Our laboratory uses consistent and disciplined processes in our lab, to provide you a value added business partner.

These processes allow us to provide reliable results to you in a timely manner that will enable you to continue manufacturing and distributing your food products. Testing services include:

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In the ever changing backdrop that is food safety, Chestnut Labs understands that it is critical for companies to protect their brand, assure customer loyalty, and comply with regulatory mandates. Chestnut labs will partner with you to provide a value added service with uncompromising quality and a commitment to excellence. From shelf-life studies to in-plant validation studies, our consultants will work with you to deliver quality data and detailed interpretation of your product or process.

To protect their assets, solidify consumer loyalty, and comply with regulatory mandates, it is crucial for companies to validate through scientific studies the safety of its products and confirm the efficacy of their processes.

Let Chestnut Labs design the study you require. With clients ranging from major food manufacturers to test kit manufacturers, we work with a wide spectrum of companies, organizations, and associations. 


Antimicrobial Effectiveness Testing

An Antimicrobial Effectiveness study helps determine the anti-microbial efficacy in a product. The product is inoculated with a controlled quantity of specific microorganisms. The study then compares the level of microorganisms found on a control sample versus the test sample over a period of time.

Challenge Study

Challenge studies can provide you with information to help you understand how microorganisms interact with your specific product formulation and how manufacturing processes affect organism survival. Our reports will provide you with in-depth information about your product, formulation, or process. These studies are designed by experience scientist using the National Advisory Committee on Microbiological Criteria for Foods (NACMF) guidelines. Data obtained can determine: If changes in product formulation inhibit microbial growth. If interventions are compatible with your product Sanitizer/disinfectant efficacy If packaging or manufacturing materials have antimicrobial properties. Effects o changes in storage/shipping/packaging conditions. If changes in storage/shipping/packaging conditions have the desired effect on pathogens.

In-Plant Validations

Lab Validation studies can be followed by In-plant Validation studies performed at your facility using surrogate organisms. Our services include shipping of the supplies needed to perform your study as well as supplying an experienced microbiologist to manage the on-site process. We are available evenings and weekends to minimize the manufacturing down time required to complete your study.

Laboratory Validations

Studies are designed after an in-depth initial consultation with representatives from your organization, to ensure the study addresses your specific needs. Lab Validation studies are useful in providing preliminary data prior to an In-plant Validation study. Data obtained can assist you in: verifying the inactivation of pathogens at critical control points, establishing proper cook and hold times and temperatures, and verifying thermal processes are achieving the desired log10 reduction in pathogens

Media Certification

The media certification is designed primarily to determine whether a substance or preparation complies with an established specification for microbiological quality.

Shelf-Life Study

Defining the optimal shelf-life of your product can have a direct effect on your profitability. Defining the optimal shelf-life will: Ensure product quality over the course of the shelf-life Reduce waste due to discard of product prematurely. Chestnut Labs shelf life studies are specifically designed to meet the scope of our client’s objectives, which can include microbial, chemical, and sensory testing to ensure the optimal shelf life for your product is defined. Chestnut Labs begins designing our shelf life study through an initial detailed discussion to determine the target objectives of the study analysis. Once parameters of the analyses are agreed upon a detailed proposal will be submitted for review prior to the initiation of the study.

Time Kill Study- In Vitro

A Time Kill Test study is a basic microbiology method for assessment of antimicrobial activity of an antimicrobial test material or disinfectant. The time kill study is used to determine the microbial reduction of a selected bacteria or fungi. Depending on the type of analysis, and the matrix of the product various organisms are studied.



One of the best investments you can make to protect to your brand lies in effective employee training and education.

Ensure the quality and safety of your food products by allowing Chestnut Labs to design a training program to meet your needs.

Based on our food microbiology and chemistry expertise we can provide managers and supervisors with information on today’s most critical food safety issues.

Our instructors are experts who use real-life examples to provide you and your staff with the theoretical and practical information needed to produce safer, higher quality products.

We can help you meet your training, scheduling, and budget needs with cost-effective customized programs offered in a single or multi-day format. These services are available in the convenience of your facility or at Chestnut Labs headquarters. 


Chestnut Labs can assist in developing an pathogen environmental monitoring program. Control of pathogenic microorganisms in the manufacturing environment is a key component to the overall Food Safety Program.



Sampling practices can considerably affect the accuracy, consistency, and the value of data. As companies continue to rely on routine environmental monitoring programs to obtain important microbiological data; the importance of proper sampling techniques increase.


Risk Assessment

Chestnut Labs can guide you through our program that is designed to identify, rank, and prioritize your products systems hazard vulnerability through on-site evaluations.


An effective sampling program can help assure a food company’s controls are successful in maintaining the safety of final products, incoming ingredients, imported products, and products where the conditions of manufacture and storage are not known.



Learn more about the courses available from Chestnut Labs, including class agendas, instructor bio’s, and registration information.



Chestnut Labs teaches beginning lab technicians the basics of lab safety, how to properly use laboratory tools, testing equipment, and appropriate procedures for conducting microbiological tests.

Contact Chestnut Labs to find out how our professionals can help you by designing a training program to improve the knowledge of your staff.



Chestnut Labs offers our clients food safety solutions from established experience. As a leader in food safety, Chestnut Labs is dedicated to providing the highest level of technical knowledge to ensure complete and well-documented audits. During audits, we deliver an impartial and independent assessment of your safety programs. To support your supply chain initiatives, we can partner with your corporate food safety and quality team to design a program that reflects your specifications and expectations.


Knowing where your in-plant deficiencies lie is the first step in improving and enhancing your food safety and quality programs. Developed specifically for processors, our Food Safety Audit provides you with data to improve your food safety and quality systems


It is critical to know that the co-manufacturers that are manufacturing product under your label are following GMP’s and food safety practices. This audit will evaluate their quality and food safety systems and provide detailed corrective actions.


In a GLP audit, Chestnut Labs will evaluate your labs conformance to recognized industry practices, and your own internal standard operating procedures. From aseptic sample handling techniques to data management, auditors review every aspect of your quality systems for deficiencies that can lead to the production of uncertain results, and the release of unsafe products to customers.

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