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Our laboratories are still open and reliably carry out your analyses.

Feel free to use our Live Chat if you have any questions or send your inquiry at tobias.wiezorek@tentamus.com.

Welcome to QSI America!
Experts in honey and agave syrup testing

Honey and bee products

Agave Syrup

Consulting & Training

QSI America – a Tentamus company

Global Service. Same Quality.

Our 14,000 sqft laboratory is located in Corona, California and operates since more than 17 years in the field of quality assurance.

At QSI America, the quality control of Honey and Bee Products is our specialty and we pride ourselves on our ability to facilitate large scale operations while still being able to provide personable quality service to our customers.
We are proud to show our roots which are based in QSI, Bremen, Germany. We took all more than 50-year knowledge and brought it to Corona, California to support the American market and offer high end solutions to your analytical needs in products such as Honey, Beehive Products, Agave Syrup.

We belong to Tentamus Group, a network of 55 laboratories worldwide and growing. Our network allows us to encompass a broad spectrum of services. As a group, we are your one stop shop for all your testing needs!

Feel free to contact us! We would be happy to answer any questions and provide advice concerning Honey product safety, hygiene, and quality control.

Lates News

Preservation Challenge Tests Cosmetics Tentamus

Preservation Challenge Tests for Cosmetics according to ISO 11930

How can we ensure that a cosmetic product remains stable against microbiological influences?   Preservation challenge tests represent a fundamental building block for evaluating the microbiological safety of cosmetic products. The test is intended to confirm that the cosmetic product prevents germ multiplication when used as intended and is therefore microbiologically stable. The ISO 11930 ... Continued
Fragrances Cosmetics Tentamus

New Regulations for Fragrances in Cosmetics

The field of analysis and declaration of allergenic fragrances in cosmetics is currently in a state of flux. In general, certain fragrances a certain amount in cosmetics have to be declared above (according to Annex III of Regulation (EC) No. 1223/2009: 10ppm for leave-on products, 100ppm for rinse-off products), the use of individual fragrances is even ... Continued

New Method: Analysis of amino acids in feed and food via LC-LRMS/MS

For a healthy diet and the functionality of biological processes, humans and animals need amino acids. Laboratories often face the problem of challenging analysis when determining the correct content of amino acids in food and feed. Amino acids (AA) are organic molecules that contain both a carboxylic -COOH and an amino -NH2 functional group. In ... Continued

Our Pet Food Passion!

Here at Tentamus, we see pets as companions, friends. Just like our human families we want to make sure our animal family is on a natural, healthy diet. Though many people may not realize it, pet food has many similar aspects to human food. Pet food should have a guaranteed analysis of protein, fiber, fat, ... Continued

Analysis of ethylene oxide in Rotterdam

The number of recalls for products in which ethylene oxide residues and 2-chloroethanol are detected is increasing every day. In 2020, residues were found in sesame and sesame products, and now ethylene oxide is being detected in locust bean gum, xanthan gum and thickeners. Ethylene oxide is a gaseous disinfectant used to kill fungi and ... Continued

Lambda Científica: New member of the Tentamus Group

Lambda Científica, a leading analytical laboratory in the pharmaceutical sector in Mexico with a history of more than 48 years in the industry, enters into a significant alliance with Tentamus Group. Lambda is an independently owned laboratory providing microbiological and chemical analyses for the pharmaceutical industry, in particular supporting their customers in drug analysis, analysis ... Continued

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