Lab Equipment Buying FAQ: From Thermo Fisher HPLC Columns to Fluke Meters

These are the seven questions I get asked most often as the person who handles lab equipment purchasing. Quick disclaimer: I'm not a scientist. My answers come from five years of managing procurement for a mid-sized analytical testing lab — roughly 60–80 orders a year, spending somewhere north of $700K across 8 vendors. If your world looks different (big pharma, university, freshly funded startup), take what fits and ignore the rest.

1. Are Thermo Fisher HPLC columns worth the premium price?

I've defended this invoice more times than I can count. The short answer: yes, for us. The long answer involves a 2023 pilot project with a cheaper column brand. The spreadsheet said 30% savings. My gut said something felt off — their sales emails were slow, and the sample column arrived without its certificate of analysis.

We ordered a batch anyway. Results looked fine for about two months. Then our QA team flagged reproducibility drift, and we had to rerun a client sample set. The reruns cost us more than the 30% we'd saved. What you're paying for with Thermo Fisher HPLC columns is batch-to-batch consistency. In a testing lab, that consistency is the product. Their technical support also picks up the phone, which has saved our chemists more than one Friday afternoon.

2. What is a pipette gun, and should I order the Thermo Fisher one?

A pipette gun — technically a pipette controller — is a handheld motorized device that draws liquid into a serological pipette. Basically, it does what the old rubber bulbs did, but with way better control and far less risk of over-aspirating. Nobody should be pipetting by mouth in this decade (seriously, if you are — stop).

We use Fisherbrand pipette guns from Thermo Fisher. They're not the cheapest option, but they hold up under daily lab use. In 2022, we tested a budget alternative to save maybe $50 per unit. Eight months in, the triggers got sticky and the batteries wouldn't hold a charge. Replacing them cost more than buying the better units upfront.

If you're choosing one, think about battery life, hand feel, and whether the tip cone can be autoclaved. For sterile work, that last one isn't a nice-to-have — it's a requirement.

3. Should we buy a 799 digital caliper or a cheaper one?

The 799 digital caliper is one of those models that keeps showing up in lab supply catalogs, and I've ordered it for our QC lab more than once. The question I get: “Can we save money with a cheaper caliper?” Based on our calibration records — no, not really.

From the outside, all digital calipers look identical. The reality is different once you put them in a working QC lab. Our budget calipers failed calibration year after year — the calibration house would send them back marked “out of tolerance.” Meanwhile, the 799 units stayed within spec for four straight years.

Honestly, I'm not sure exactly why the 799 measures better. My best guess is the beam is machined more precisely and the electronics are higher quality. I'm a purchaser, not a metrologist. What I know is that the budget calipers cost us more in calibration fees and replacements than the 799 did. Unless you're buying a caliper for occasional office use, the premium model is the frugal choice.

4. What thermal camera news matters for a lab buyer?

Every few weeks, a facilities manager or researcher forwards me a thermal camera news headline. I'll be honest: I'm not a thermography expert. I know enough to be dangerous — NEDT, resolution, radiometric data — but I shouldn't be the person who picks a research-grade thermal camera for your experiment.

What I can talk about is the buying side. The market for entry-level thermal cameras has changed a lot since 2020. A decent camera for building checks — electrical panels, cold-room door seals, spotting an overloaded breaker before it fails — is now a manageable operating expense instead of a capital equipment request. That's the news that actually matters to the person signing purchase orders.

The flip side: don't buy a bargain-bin thermal imager for serious lab work. We tried a cheap unit once — ugh. The image quality was genuinely bad, and calibration drifted within months. Get your scientist to write the spec, then shop that spec. That order of operations saves everyone time.

5. How do I use a Fluke 117 True RMS multimeter?

I've bought these for our facilities team and used one a few times under supervision. Here's the 101 version.

First, why “True RMS” matters: a regular AC meter assumes the voltage waveform is a clean sine wave. In a lab building full of motors, pumps, and switching power supplies, that assumption fails. True RMS meters compute the actual heat-producing value of the waveform, so you can trust the reading even when the power is “dirty.”

Basic voltage check: turn the dial to the V position (the yellow button toggles between AC and DC), plug the black lead into COM and the red lead into VΩ, touch the probes to the points you're checking, and read the display. The meter is auto-ranging, so no need to guess the scale.

The 117 also has a non-contact voltage detector — VoltAlert — that beeps and flashes when you hold the top of the meter near a live wire. Our maintenance team uses it constantly for a quick “is this safe to touch?” check.

Serious disclaimer: I'm the person who buys the tool, not the person who should teach you electrical safety. Get proper training from a qualified tech before doing real electrical work.

6. You buy Fluke AND Thermo Fisher — how do you decide who gets the PO?

I trust each brand in its lane. Thermo Fisher is our default for analytical instruments and lab consumables — HPLC columns, pipette guns, spectrophotometers. Fluke is our default for electrical test tools. They're both excellent at what they do; they just don't do the same things.

The bigger lesson: a vendor who claims to be the best at everything isn't being straight with you. We once had a rep tell us, “This isn't our strength — talk to the specialist,” and that honesty earned our trust for the next ten orders. It's the same logic whether we're buying a $200 test meter or a $200,000 mass spectrometer. Know the lane, pick the brand for the lane, and you'll make fewer purchasing mistakes.

7. What if we need a $100K instrument but only for one project?

Rent it. The old thinking was that you either buy an instrument or you don't get access to it — rental was a last resort for oddball equipment. That's changed. Thermo Fisher runs a rental program for high-cost instruments like Raman microscopes, and we leased one for a six-month materials project in 2024. Our scientists got the data they needed, and I didn't have to push a capital approval through five signatures.

Rental puts the cost into the operating budget, which is a much easier conversation with finance. They shipped the instrument, set it up, trained our team, and picked it up when we were done. If you're a smaller lab or an academic group without capital flexibility, that's a conversation worth having before you assume the big instrument is out of reach.