<< Return to News

Are you over-preserving?

Many of us know what happens when you mistakenly under-preserve a biological product: the bottles start to bulge or suck-in (the latter can also be caused by fragrance issues), fungal growth starts to appear or it starts to have an unpleasant odor. But do you know what signs to look for if your product is over-preserved?

There is usually one noticeable sign of an over-preserved product: the customers who were consistently using your product haven’t placed an order in a while.

Understanding Preservatives

The preservation system in your biological product is a double-edged sword. If you under-preserve, you get the problems mentioned above. But if you over-preserve, your product won’t work, or it will have a significant delayed reaction. This can lead some of your repeat customers to think that the product no longer works.

Over-preservation occurs when too high of a concentration of preservatives is present in a product. The preservatives are meant to be diluted to a predetermined point as indicated by the number in front of the X on the label (i.e. a 10X product would be 1 part product, 9 parts water). Diluting to the proper point allows the product to activate and begin working. If over-preserved, the product isn’t diluted enough to allow activation.

Effects on Application

The below graph (Figure 1) shows an example of an over-preserved product. As you can see, the properly preserved product began to grow 16 hours sooner than the over-preserved product. Depending on the application and holding time, a delayed start like that of the over-preserved product can kill your treatment success. Grease traps, multi-story drain treatments and septic piping are a few examples of systems that have narrow activation windows where over-preservation can limit your repeat business.

At MDG, we’re dedicated to honoring the brand and reputation of our partners. Proven Success is our measure of a job well done and is our promise. As one of our partners, we’ll show you how to properly dilute products so that you can avoid getting over- or under- preserved products. If you suspect issues with your current supplier, reach out to us and we’ll see what we can do to help.

If you’d like to learn more about our products and support services, send us a message and one of our representatives will reach out to you.

Figure 1 – This graph illustrates how an over-preserved product can have a negative impact on product application. If over-preserved, the product may not work, or it will have a delayed reaction which can have a negative impact on treatment.

Search Insights
Recently Posted Insights

MDG: Partners in Plant Health

At MDG, our mission is to Feed, Clean, Save the World through the development of microbial solutions that solve significant challenges in the markets we serve. We’re excited to continue working toward our mission by igniting our presence in the plant health market!...

MDG Selected as a Finalist in 2025 Wisconsin Innovation Awards

We are excited to share that, for the second consecutive year, we’ve been chosen as a finalist for the Wisconsin Innovation Awards (WIA)! This annual award is granted to companies and individuals developing groundbreaking ideas and driving innovation in the state of...

Upcoming Webinars: Putting Bacillus to Work

https://vimeo.com/1115971375?share=copy Bacillus bacteria are highly versatile, making them a great choice for formulating industrial, institutional, and consumer (IIC) cleaning products. During our upcoming webinar, technical support lead Jennifer Cray will use MDG...

Tips for Successful Microbial Scale-Up

Scaling up your microbial strain for commercial purposes is a highly complex process, and without the proper guidance, it can be hard to get it right. As your trusted CMO for custom microbial fermentation, we work with you to achieve your unique goals and drive your...

Meet MDG at SupplySide Global 2025

Heading to SupplySide Global in Las Vegas this year? So are we! On October 29 and 30, our human health expert will be walking the expo hall floor. Don’t miss your chance to connect in person and learn about how MDG can become your trusted probiotic ingredient...

Celebrating Our Expanded Capacity for Microbial Growth and Scale-Up

https://vimeo.com/1127921161?share=copy As a trusted provider of Bacillus-based solutions, we are passionate about continuous innovation to better serve our partners. After years of planning and hard work, we are thrilled to share that we celebrated the grand opening...

MDG at RAFT 2025: Insights on Innovative Microbial Manufacturing

https://vimeo.com/1119814916?share=copy MDG is excited to share that we will be exhibiting at the Recent Advances in Fermentation Technology (RAFT) Conference this year! Visit us November 9–12 at the Marriott Myrtle Beach Resort and Spa in Myrtle Beach, SC. We’ll be...

Biotifx®: Innovating Wastewater Solutions

Without the right support, launching and selling your biological wastewater treatment products can be a difficult task. Luckily, when you partner with MDG, you receive the necessary assistance and more through our Biotifx® Platform. Created specifically for value-add...

Inflammaging: How Probiotics Can Help

Healthy aging is an essential element of wellness for many consumers—in fact, in a NutraIngredients survey, 50% of people ranked healthy aging as an important goal. Unfortunately, there are a multitude of factors that may impede the healthy aging process. Recent...

Related News