Black Lab
Custom Toll Blending
Your blend, perfected: From raw materials to ready-to-ship blends, our fast lead times, reliable consistency and flexible packaging keeps your formula secure and your supply chain moving.
Visit us at booth S12926 at the World of Concrete conference. January 21 - 23 in Las Vegas.
Black Lab taps into more than 600 raw materials to deliver high-quality blends of minerals, aggregates and powders for epoxy and urethane systems, as well as polymer concretes, mortars and grouts.
35+ years of experience
Blend from more than 600 raw materials
10+ years average supplier relationship
Trust toll blending consistency from first to last bag
Utilize services from three locations: Chardon, OH, Fresno, TX, and Serena, IL
2000+ tons of bulk storage
What Makes Us Different?
Small Team, Backed by a Big Name
Those who work with Black Lab enjoy collaborating with our tight-knit, knowledgeable team. As a division of Covia, we have access to an extensive network of resources, including an R&D team that helps optimize our processes to create even greater toll blending value for you.
Collaborative Approach
You have your proprietary formula, we have more than 67 years of collective experience. Together we can come up with the most cost-effective, time-efficient, quality-driven processes to ensure your blending needs are met – on time and in full.
A key driver of Black Lab’s efficiency is the strategic positioning of our facilities. Each of our locations near Chicago, Cleveland and Houston is serviced by transportation lines that enable us to ensure the right blend is shipped rapidly and reliably throughout North America. We offer containerized load and palletized shipments to any market around the globe.
Our facilities are located in:
Chardon, Ohio
Fresno, Texas
Serena, Illinois
We’ve made a significant capital equipment investment to ensure the quality and consistency of every blend we prepare. We have a wide variety of blenders for flexible blending and homogenization operations and use state-of-the-art scales that are calibrated regularly to ensure precise measurement of the finished blend.
Commitment to Quality
Our highly qualified and experienced technicians oversee the entire process with quality control measures embedded throughout, starting with two-person verification of batch sheets and multiple steps to ensure consistency from the first bag to the last.
Formula Protection
We know protecting your proprietary formula is of the utmost importance, and we also protect your brand reputation with accurate, high-quality mixing of your blend. We guarantee consistency from the first bag to the last, because we bag from the mixer not from the hopper.
You can rely on Black Lab for large-volume units and small-batch solutions. We strive to produce the highest quality, most consistent product possible, and our minimum order quantity is in line with growing customer needs. The minimum order quantity is just two pallets, which provides our customers tremendous flexibility.
Our individual product packing options include supersacks and totes, as well as a variety of bags, pails, boxes, and drums. We also provide labeling and package design assistance.

Contact Covia today at 1.800.243.9004 or Sales@CoviaCorp.com, or click to fill out this form