Industry Trends

My 8-Step Checklist for Evaluating Packaging Suppliers (After Getting Burned Twice)

My 8-Step Checklist for Evaluating Packaging Suppliers (After Getting Burned Twice)

I'm a procurement manager at a 200-person consumer goods company. I've managed our packaging budget—around $180,000 annually—for six years now. In that time, I've negotiated with 30+ vendors, tracked every invoice in our cost system, and made two supplier switches that I probably should've made sooner.

This checklist exists because of those two switches. The first time, I chose a vendor based on their quoted unit price. Looked great on paper. In practice, we ate $2,400 in hidden fees over 18 months before I finally documented the full picture and made the change. The second time, I skipped a quality verification step because we were in a rush. That $4,200 order came back unusable, and the redo pushed us past our deadline.

So here's what I check now—every time. Eight steps, most of which take less than an hour. Step 5 is the one I skipped that cost me the redo.

Who This Checklist Is For

This works for B2B buyers sourcing packaging—glass bottles, plastic containers, closures, jars, that kind of thing. It's designed for orders in the $2,000-50,000 range where you're committing to a supplier relationship, not just a one-off purchase.

If you're buying consumer packaging off-the-shelf (like branded water bottles for personal use), this isn't for you. If you're evaluating suppliers like Berlin Packaging, TricorBraun, or regional distributors for your company's product line, keep reading.

Step 1: Calculate Total Cost of Ownership Before Comparing Quotes

Don't compare unit prices. Compare total cost of ownership (TCO). I built a spreadsheet for this after getting burned on hidden fees twice.

Here's what goes into the calculation:

• Unit price × expected annual volume
• Tooling or mold fees (often $500-5,000 for custom containers)
• Minimum order quantities and how they affect your cash flow
• Shipping costs—request quotes to your actual facility, not "estimated"
• Payment terms (net-30 vs. net-60 affects your working capital)

In Q2 2024, when we compared quotes for our annual closure order, Vendor A quoted $0.12/unit. Vendor B quoted $0.14/unit. I almost went with A until I ran the TCO: Vendor A charged $800 for tooling amortization, $350 for "handling," and their shipping was $400 more due to warehouse location. Total annual cost: $18,200. Vendor B's $0.14/unit with everything included came to $16,800. That's an 8% difference hidden in line items most people don't ask about.

Step 2: Request Samples Before Committing—And Pay for Them If Necessary

Free samples are marketing samples. They're often from a different production run than what you'll actually receive. I learned this the hard way.

Now I request paid production samples from the actual manufacturing line. Yes, it costs $50-200. That's insurance against a $4,000 mistake.

When the samples arrive, I check:

• Dimensional accuracy against spec sheet (I use calipers, not eyeballing)
• Material consistency—weight, clarity, any warping
• Closure fit if applicable (test with your actual product)
• Print or label adhesion if pre-decorated

Everything I'd read said samples were just a formality. In practice, I found about 15% of samples reveal issues that would've been deal-breakers at scale.

Step 3: Verify Their Quality Certifications Independently

Don't just ask "are you FDA compliant?" Ask for documentation and verify it.

For food and beverage packaging, request:

• FDA registration number (you can verify at FDA.gov)
• Certificate of Compliance for food-contact materials
• SQF, BRC, or ISO certification documents with expiration dates

For pharmaceutical or personal care, add:

• cGMP compliance documentation
• Material safety data sheets for all components

I've had vendors claim certifications they didn't actually hold. One told us they were "in process" for SQF—which meant they weren't certified. That distinction matters when your customer audits your supply chain.

Step 4: Document Lead Times in Writing—With Consequences

Verbal lead time estimates are worthless. Get it in writing, and clarify what happens if they miss it.

Questions to ask:

• What's your standard lead time for [specific product]?
• What's your on-time delivery rate for the past 12 months? (Ask for data, not a guess)
• What's your policy if you miss the delivery date?
• What's the lead time for reorders vs. initial orders?

After tracking 200+ orders over six years, I found that vendors who quote 4-6 weeks typically deliver in 5-7. Build in a 20-30% buffer. The ones who quote precise timelines ("18 business days") and actually hit them? Those are keepers.

The most frustrating part of vendor management: the same late delivery issues recurring despite clear communication. You'd think written agreements would prevent this, but some vendors treat timelines as suggestions. Our procurement policy now requires penalty clauses for critical-path orders.

Step 5: Run a Fill and Function Test (The Step I Skipped)

This is the step that cost me $4,200.

Before approving production, take your samples and:

• Fill them with your actual product (or a test equivalent)
• Test closure/seal integrity under realistic conditions
• Run them through your filling line if possible
• Check compatibility with your labeling equipment
• Store filled samples for 2-4 weeks and check for leakage, discoloration, or degradation

I skipped this step because we were behind schedule. The bottles looked fine empty. Filled with our product, the seal didn't hold—slight leakage under pressure. We didn't discover this until 5,000 units were in our warehouse. The redo cost $4,200 plus three weeks of delay plus one very uncomfortable conversation with our operations director.

I didn't fully understand the value of function testing until that incident. Now it's non-negotiable, even when we're in a rush. Especially when we're in a rush.

Step 6: Check Reference Customers in Your Industry

Ask for references—and actually call them.

Questions I ask references:

• How long have you worked with this supplier?
• What's their response time when issues arise?
• Have you had quality issues? How were they resolved?
• Would you recommend them without reservation?

The "without reservation" question is key. People will generally say positive things about vendors they work with. But when you ask if they'd recommend without reservation, the hesitations tell you more than the words.

I have mixed feelings about reference checks, honestly. On one hand, vendors only give you happy customers. On the other, I've caught red flags in three out of ten reference calls—enough to make it worth the 30 minutes.

Step 7: Understand Their Problem Resolution Process

Before something goes wrong, find out how they handle it when it does.

Ask:

• Who's my point of contact for quality issues? (Get a name and direct line)
• What's your process for claims on defective product?
• What's your typical resolution timeline?
• Do you offer credits, replacements, or refunds?

The best suppliers have documented processes. The ones who say "we'll work something out" usually mean "we'll negotiate hard to minimize our liability."

When I audited our 2023 vendor performance, I found that 80% of our dispute resolution time was spent with suppliers who didn't have clear claims processes. The supplier with the clearest policy? Issues resolved in 48-72 hours. The vague one? Six weeks of back-and-forth on a $1,200 claim.

Step 8: Start with a Trial Order

Don't commit your entire annual volume to a new supplier on the first order. Run a trial.

Our policy:

• First order: 10-20% of projected annual volume
• Second order (if first goes well): 30-40%
• Full commitment: only after two successful orders

This approach worked for us, but our situation is specific—we're a mid-size B2B company with predictable ordering patterns. If you're a seasonal business with one big production run per year, the calculus might be different.

The trial order isn't just about the product. It tests their communication, their responsiveness, their invoicing accuracy—everything. I've passed on suppliers whose samples were perfect but whose trial order came with invoice discrepancies and zero communication during production.

Common Mistakes I Still See (Including Ones I've Made)

Choosing based on the lowest MOQ: A supplier with 500-unit minimums isn't always better than one requiring 2,500 if the larger order gets you better unit economics and the product doesn't expire. Run the math on total annual cost, not per-order convenience.

Skipping the written specification: Verbal agreements about material thickness, color matching, or dimensional tolerances are meaningless when there's a dispute. Document everything. I have a spec sheet template I require signatures on before every production order now. (I really should've implemented that earlier.)

Ignoring geographic logistics: A supplier with better pricing but a warehouse 1,500 miles away may cost more in shipping than a local option. I've never fully understood why more buyers don't factor this in—maybe because shipping is a separate line item that's easy to overlook.

Consolidating too fast: Part of me wants to consolidate to one supplier for simplicity. Another part knows that our backup supplier relationship saved us during that 2023 supply chain disruption. I compromise with a primary + secondary system: 70% volume to primary, 30% to backup. The redundancy costs maybe 5% more annually. Worth it.

The Bottom Line

This checklist takes maybe 4-6 hours total across all eight steps. That's nothing compared to the cost of a bad supplier relationship—which, in my experience, runs $5,000-15,000 in direct costs plus incalculable time and stress.

When I switched from budget to premium suppliers for our primary packaging line—suppliers who passed all eight steps—our quality issue rate dropped from 8% to under 2%. Client feedback scores improved by 23% the following quarter. The $50 difference per order translated to noticeably better client retention.

The conventional wisdom is that supplier evaluation is about finding the cheapest option. My experience with six years of invoices suggests otherwise. Total cost of ownership beats unit price. Verification beats trust. And the step you skip is usually the one that bites you.