When I took over chemical purchasing in 2020, our vendor list was out of control. Two hundred employees, three locations, and roughly $180,000 a year spread across nine different suppliers. Adhesives from one place. Coatings from another. Sealants from a third. Every month brought a different invoice, a different portal, a different delivery schedule, a different headache.
The question I kept asking myself: should we consolidate?
It's tempting to think one supplier for everything is simpler. But the more I dug in, the more I realized the comparison isn't as one-sided as the sales decks suggest. So I ran an honest comparison between a broad-catalog supplier like PPG and our existing multi-vendor approach. The standards: product breadth, technical depth, transaction costs, and supply chain reliability.
Here's what I learned. It wasn't what the sales decks promised.
Product Breadth: What "One-Catalog" Really Gets You
PPG isn't just a paint company. Ask anyone in Pittsburgh about PPG Paints Arena—home of Penguins hockey and a regular stop for Hot Wheels Monster Trucks—and they'll picture the seating, the concourses, the exterior cladding. That building is a walking advertisement for PPG's coating technology.
In industrial terms, PPG's catalog spans paints, coatings, sealants, adhesives, powder coatings, and specialty chemicals. One vendor. One account manager. One invoice. On paper, it's the dream of every admin buyer drowning in spreadsheets.
But here's what I learned about breadth: it isn't the same as depth.
Take the phrase "sealants on tooth." Dental sealants and industrial sealants share a name. That's about it. Different chemistry, different regulatory paths, different performance standards. A broad supplier who carries both might know both adequately. But they won't know both at the same depth as a specialist who only does one.
More to the point: no supplier, no matter how comprehensive, is the best at everything. The ones who admit that are easier to work with than the ones who claim they can do it all. That became clearer as I dug into the next dimension.
Technical Depth: The Causation People Get Backwards
People think expensive vendors deliver better quality. Actually, vendors who deliver quality can charge more. The causation runs the other way. That distinction matters when you're comparing a broad manufacturer with niche specialists.
A player like Superior Adhesives & Chemicals built their entire business around going deeper on adhesives than any broad-line supplier would. For applications where off-the-shelf products fail—weird substrates, temperature extremes, high-vibration environments—that depth is worth real money.
The counterintuitive part? For standard applications, the broad supplier often matched or exceeded the specialist. Better documentation. Cleaner quality control. Faster answers on lead times. The specialists only won on the tail-end cases, which happen maybe 10-15% of the time.
We ran a test. I ordered the same standard adhesive from PPG and from our previous specialist vendor. Both performed fine in our application testing. PPG's documentation was more complete. The specialist's technical support was slightly more responsive. A tie for standard work, which shifted the value calculation in PPG's direction.
So the real question becomes: how often does your operation need tail-end expertise? For us, it was rare. For a custom fabrication shop, it might be every week.
Transaction Costs: The Hidden Dimension
The "always get three quotes" advice ignores the transaction cost of vendor evaluation and the value of established relationships. This is the dimension nobody puts in their sales deck because it's invisible until you process your 47th order of the year.
We process 60-80 orders annually. Nine vendors meant nine invoice formats, nine PO templates, nine shipping policies, and nine accounts-payable contacts. One vendor who couldn't provide proper invoicing cost us $2,400 in rejected expenses. A lesson learned the hard way.
When we piloted consolidating standard orders with one primary supplier, our ordering time dropped from about 15 hours a month to 5. Our accounting team—two people, by the way—stopped chasing discrepancies. The monthly close got easier.
But here's the trade-off I wrestled with. The upside was streamlined operations. The risk was dependency. I kept asking myself: is easier reconciliation worth potentially having no backup if something goes wrong?
The answer, after six months of piloting? For standard products, yes. For mission-critical niche formulations, no. There's a middle ground, and I'll get to it in a moment.
Supply Chain Reliability: The Real Test
Anyone can quote a delivery date. Delivering it consistently is another matter.
Per FTC guidelines, advertising claims have to be truthful and substantiated. But those guidelines don't cover "we'll ship it on Friday." I've had a supplier promise five-day turnaround and deliver in twelve. I've also seen a vendor quote eight business days and beat their own estimate by two. The vendors who proactively updated me—even with bad news—earned my trust. The ones who went silent? Red flags. Bottom line: reliability beats speed in almost every case.
This is where brand visibility matters in a way I didn't expect. A company with its name on an arena has a visible reputation to protect. The same discipline that maintains PPG Paints Arena's seating and exterior surfaces translates—usually—to supply chain habits. Not always. But in our pilot, PPG's promised dates were met 94% of the time. Our other eight vendors averaged 78%. That's a 16-point gap.
Boundaries That Built Trust
One moment shaped my view more than any sales presentation. I'd been researching pharmaceutical chemistry and stumbled across the term "small molecules." I asked a PPG rep: what are small molecules in pharma, and do they overlap with industrial chemical supply chains?
The rep didn't bluff. They explained that small molecules in pharma are low-molecular-weight compounds that can enter cells easily—a completely different product category from industrial coatings, sealants, and adhesives. They told me which PPG products were relevant to my questions and which weren't. No smoke. No padding the catalog.
"The vendor who says 'this isn't our strength—here's who does it better' earns my trust for everything else."
That conversation made me more confident consolidating our standard chemical orders with PPG, because I knew they'd tell me honestly when something was out of scope.
It's also the same logic I apply in reverse: when I need dental-grade materials for our facility first-aid kit or pharmaceutical-grade compounds for the lab, I don't call PPG. I call specialists. That's not a criticism of PPG—it's an acknowledgment that every supplier has a lane.
Here's My Bottom Line
Neither single-sourcing nor multi-vendor is objectively better. It depends on your application mix and your tolerance for back-office chaos.
Consolidate with a broad supplier like PPG when:
- Your applications are standard (coating, sealing, bonding)
- You're buried in vendor management
- You value documentation and quality control
- Your volume justifies dedicated account attention
Keep niche specialists when:
- You have tail-end applications that consistently fail
- You need specific certifications your broad supplier lacks
- You're running a critical project and need backup capacity
- Your team can absorb added transaction costs
Here's what I actually did: consolidated standard products with PPG, kept two specialists for specialty adhesives and high-temp coatings, and cut four vendors entirely. Six months into the pilot, ordering hours dropped by two-thirds. AP disputes dropped to zero. We saved roughly $7,300 in the first year—not from lower unit prices, but from fewer administrative errors and less double-handling.
The comparison nobody sells you is the one that matters: the total cost of managing your chemical supply, not just the unit prices.
Take it from someone who processed 47 invoices in January alone. Do the pilot. Measure everything. And choose based on what the data says—not what the sales deck promises.