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Quality

Quality Standards at Preston Protein Products

Dairy ingredient quality is built in at Preston Protein Products, not inspected in at the end. From sourcing through the final, customized product, our quality team holds our ingredients and facility to rigorous food-grade standards — backed by on-site testing, documentation, and recognized certifications.
ABOUT SERVICES

Our Quality Philosophy

Quality is the most important ingredient we produce. Our quality team ensures our ingredients and facilities adhere to high, consistent standards at every stage — from choosing the sources of our ingredients to creating the final, customized product for each customer.

That end-to-end view means quality isn’t a single checkpoint; it’s applied from raw dairy through processing, blending, and packaging. The result is dairy ingredients you can formulate with confidently and document for your own customers and auditors.

OUR FACILITIES

Warehouse Facilities

Our facilities are designed to support efficient storage, staging, and product movement across a variety of operational needs.

Memphis, TN

Efficient processing and distribution hub

St. Joseph, MO

Primary hub for protein processing and logistics

Caruthersville, MO

Strategic river-access facility

Kansas City, MO

Central distribution and logistics facility

Testing and Documentation

Preston Protein Products operates an on-site lab and performs in-house testing on our dairy ingredients. Testing at the source lets us verify products against specification before they ship, so issues are caught at the facility rather than at your receiving dock.

We support the documentation ingredient buyers and their auditors expect, including Certificates of Analysis (COA) and specification records tied to the product you receive. For parent-company quality and regulatory programs, see Diversified Ingredients quality assurance.

Certifications and Compliance

Our ingredients and manufacturing facility carry certifications that matter to food, pet food, and feed buyers:

  • USDA Organic — products and facility adhere to USDA organic regulations
  • Kosher — ingredients are kosher and free of meat derivatives
  • Halal — certified to serve customers in the U.S. and worldwide
  • SQF — Safe Quality Food program standards

These certifications let manufacturers meet their own customers’ requirements without having to qualify a separate specialty supplier. They support both compliance and the label claims downstream brands depend on.

Industry Associations: USDEC, ADPI, and More

Engagement with dairy industry organizations helps keep our quality program aligned with evolving standards and best practices. Participation in groups such as the U.S. Dairy Export Council (USDEC) and the American Dairy Products Institute (ADPI) connects our team to current dairy ingredient guidance, technical resources, and industry standards.

For ingredient buyers, that engagement is a signal: dairy ingredient quality is treated as an ongoing commitment tied to the broader dairy industry, not an isolated in-house standard.

Traceability

Traceability runs through our quality approach. Because we control quality from ingredient sourcing through the final customized product, we can tie finished dairy ingredients back to their inputs — the records that make audits, customer questions, and any corrective action faster to resolve.

For manufacturers, that traceability is part of what makes a dairy ingredient supplier dependable: a documented chain from source to shipment.

How Our QA Supports Your Supply Chain

Strong supplier quality reduces the burden on your own QA team. When dairy ingredients arrive tested, certified, and documented, you spend less time qualifying material and managing exceptions, and more time running production.

Our quality standards connect directly to our dairy ingredient processing and custom blending capabilities, so the same controls apply whether you order a standard product or a custom blend.

LABEL

Built for Reliable Product Movement

Our distribution network supports efficient delivery across North America through truck, rail, and export channels. We coordinate sourcing, storage, and logistics to align with your production timelines and volume requirements.

We offer tailored business solutions, including branding, web design, copywriting, and digital marketing strategies.

OUR PROCESS

A Practical, Straightforward Approach

1

Understand Operational Needs

Ingredients are processed and customized to meet your exact specifications.

2

Build the Right Solution

Our team develops a warehousing approach designed around your operational goals.

3

Support Daily Operations

We manage receiving, storage, staging, and outbound coordination.

4

Maintain Clear Communication

Ongoing coordination helps ensure smooth and efficient operations.

OUR FACILITIES

Related Services

At Diversified Ingredients, we go BEYOND sourcing – from transloading and warehousing to quality assurance and co-product recovery. Our experienced team works to understand, anticipate, and meet every need.

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Looking for a Reliable Logistics Partner?

Our team is ready to support your warehousing and distribution needs with practical, flexible solutions.