If you're a lab manager, procurement manager, or the unlucky person who just got told to 'order a few pipettes,' you need a checklist. Not a lecture on supplier relationship management—an actual, step-by-step checklist. I'm a procurement manager at a 45-person diagnostics company. I've tracked every lab equipment invoice for the past six years—about $180,000 in cumulative spend—and I've made my share of expensive mistakes.
This checklist covers anything from Eppendorf multichannel pipettes to a DP transmitter for cleanroom monitoring, to a Tektronix oscilloscope for the electronics lab. It doesn't matter if it's a $300 tool or a $6,000 instrument. The process is the same.
The 5-Step Checklist
Step 1: Write down the actual task, not the model number
Before you start comparing brands, write down what the equipment will actually do. For a pipette, that means asking: are you filling 96-well plates? Then Eppendorf multichannel pipettes make sense. For single-sample work, an Eppendorf Research Plus single channel pipette is the obvious choice. But the point is to match the tool to the workload, not to the status of the brand.
Everything I'd read said premium options always outperform budget ones. In practice, for our qPCR setup, a mid-tier single-channel pipette worked fine—but the multichannel had to be Eppendorf because of the reliable spacing and low effort. So we ended up with a mixed fleet. The conventional wisdom of 'buy one brand for everything' doesn't always match reality.
Step 2: Calculate total cost of ownership, not the list price
I still remember a $4,200 annual contract I almost signed because the quote was $800 lower than the incumbent. Then I calculated the total cost: the cheaper vendor charged $75 for each calibration, which we do twice a year, plus a 'certificate fee' of $18 per pipette, plus shipping each way. Over 24 months, it was $1,300 more than the standard option. That's the kind of hidden math that doesn't show up in a simple quote.
For the Eppendorf Research Plus single channel pipette, for example, the list price is only half the story. Our calibration vendor charges $39 per single-channel calibration as of January 2025—verify current pricing at your local distributor, as rates may have changed. Add in tips, which wear out faster than you'd think, and the total over three years is significantly higher than the purchase order says.
So glad I built a cost calculator after getting burned on hidden fees twice. Almost approved a $1,200 redo on another project because I hadn't considered the consumables. The calculator now includes line items for calibration, consumables, training, and disposal.
Step 3: Verify the local service ecosystem
A DP transmitter is a great example. The unit itself might be straightforward, but if it fails and you need a certified replacement in two days, a distributor five time zones away isn't going to help. When we added a DP transmitter for a cleanroom pressure loop in Q2 2024, the best price was from a vendor we'd never used. The second-best was a local rep who had stock, could calibrate on site, and had a loaner program. We paid about 12% more. That's not a bad trade when a lab shutdown costs $2,000 per hour.
Similarly, for pipettes, I've standardized on Eppendorf because the service network is everywhere. If you need a pipette aid for a busy cell culture room, you don't want to wait three weeks for a specialty battery charger. A common recommendation: buy the brand that your local lab supply store actually stocks consumables for.
Step 4: Budget for training before the equipment arrives
Most procurement checklists end when the order is placed. That's a mistake. I know because I've done it—sorry, we've done it. We've processed maybe 200 equipment orders in six years, maybe 180, I'd have to check. In the past, I've ordered a Tektronix oscilloscope and assumed the engineers would just figure it out. They didn't. The manual has 800 pages, and nobody had time to read it. So last year, we added a training line item: $350 for a three-hour session. That's roughly 10% of the instrument cost, but it cut setup time by days.
If you search 'how to use Tektronix oscilloscope' you'll get a lot of basics, but you won't get your own lab's testing protocols. A procurement checklist should include a line for training—even for a pipette aid. Novel tool, weird trigger angle, and you'll be surprised how many people use it wrong if you just leave it in the drawer.
Step 5: Ask about hidden fees in writing
The 'cheap' option results in a $1,200 redo when quality failed. Or at least it did for us in a previous life. The fix is a simple email: 'Please confirm all charges including setup, freight, import fees, and calibration certificates.' In commercial printing, setup fees can add $15–50 per color. Lab equipment has its own equivalent: installation fees, decontamination fees, connectivity modules, software licenses. We've seen a $250 'environmental handling fee' on a refrigerated centrifuge.
One clarification: I'm not saying you should always buy the most expensive option. But when you compare quotes, put all the fees in one spreadsheet and calculate a three-year total. When we did that for our Eppendorf 5810 R centrifuge, the quote with the highest base price was actually the cheapest overall after warranty and setup were included.
Common Mistakes I Still See
First, buying a single quote. Any purchase over $1,000 should have at least three quotes. In the past six years, we've never had a vendor-match price that was worse than a single-quote price, but we've caught some wild discrepancies.
Second, assuming all calibration is the same. For an Eppendorf multichannel pipette, calibration isn't just about volume accuracy; it checks tip spacing and lever force. A generic lab might not know that. If your cert doesn't list those checks, you're not getting a true multichannel calibration.
Third, ignoring users. When we bought pipette aids, I chose a rechargeable one because it seemed cost-effective. The lab team hated the weight. We ended up replacing them after six months. Had I asked the technicians to hold the candidates for ten minutes, we'd have saved $2,400.
The trigger event that changed my thinking: the vendor failure in March 2023. One critical deadline missed because a sample prep system failure—not even a vendor we bought from—made me see redundancy differently. Now, for anything essential, I always plan a backup, even if it's a manual pipette at the bench.
There's something satisfying about a perfectly executed equipment order. After all the vendor calls, the spreadsheet revisions, and the waiting, the equipment arrives, gets calibrated, and works. That's the payoff. It only happens if you follow a checklist instead of getting excited about a new toy.
Price data mentioned above was pulled from quotes and vendor lists as of January 2025. Verify current pricing at your local distributor; rates change.
