Blog Posts About Liquid Sampling Written by Our Subject Matter Experts (SMEs)
Honoring Four Decades of Helping to Ensure Food Safety and Food Quality
On March 22, 2023, the QualiTru team met at the University of Minnesota’s Department of Food Science and Nutrition for an educational pilot plant tour led by Darrell Bigalke, founder of QualiTru Sampling Systems, dairy microbiologist, entrepreneur, and proud University of Minnesota alum. As part of the celebration of QualiTru’s 40th anniversary, the team had…
The Effects of Gram-positive HRSF Bacteria on Fluid Milk Shelf Life (Part 2)
The first article in this series, Raw Milk Micro Testing, focused on Gram-negative bacteria in raw milk with the Preliminary Incubation (PI) Count and Fresh Standard Plate Count (SPC) tests. In this second installment, I would like to discuss another classification of bacteria (Gram-positive HRSF Bacteria) that was not known as a major issue in fluid…
Raw Milk Dairy Micro Testing (Part 1)
Why do you do it? What do the test results tell you? Is the test you use still a valid one? In part one of this dairy micro testing series, Raw Milk Dairy Micro Testing, I would like to take you on a journey through the development of some of the principal tests used in…
Why is Aseptic Inline Sampling Critical to Process Monitoring?
The significant food safety recalls that have occurred in the dairy processing industry this past year, ranging from Listeria outbreaks in ice cream to Cronobacter in infant formula, and the Food and Drug Administration’s* (FDA)’s recent publication of its revised Investigations Operations Manual draw attention to the criticality of inline process monitoring of bacterial risks,…
Representative Sampling for Butterfat Verification
Why is representative sampling for butterfat verification important? Because reliable data equals accurate payment! Butterfat percentages in milk have been on the rise over the last decade, along with a substantial upward trend for butterfat pricing. That’s great news for farmers. It also raises the stakes regarding the accuracy and reliability of the data upon which…
Membrane Filtration Sampling
Membrane filtration is a widely used process in the dairy industry that separates specific components of milk and whey and then either concentrates or removes/reduces them. The technology used in cheese-making, whey protein concentration, fractionation of protein, and numerous other dairy processes requires special sampling considerations for both regulatory purposes and component analysis. It is…
