Buying biology lab equipment for a new molecular and cell biology laboratory: which common laboratory equipment has to be there on day one, what can be shared or bought as a service, and the order to spend in when the budget arrives at once

The order to buy in

1. Containment and culture first. A certified biosafety cabinet and a carbon dioxide incubator decide whether cell work can happen at all, and both have lead times and installation requirements. Nothing else in a cell biology laboratory matters until these are in and certified.
2. Then the separations you use every day. A benchtop centrifuge and a microcentrifuge, refrigerated if you work with protein or RNA. These are used constantly by everybody, and a laboratory with one shared microcentrifuge develops a queue within a week.
3. Then amplification and detection. A thermal cycler, a quantitative instrument if your work needs one, and a way to read gels or blots. Buy the throughput you actually have rather than the throughput you hope for, since these are the easiest items to add later.
4. Then cold storage, sized with headroom. A laboratory refrigerator, a minus twenty freezer and a minus eighty with room to grow, plus monitoring and alarms from day one. Cold storage is where samples are lost and it is the item most often bought exactly to current need.
5. Buy imaging, sequencing and cytometry as a service until the work is proven. A microscope, a sequencer and a cytometer are the instruments most often bought too early and used least. Core facility access gives better instruments with expert support, and the purchase argument becomes obvious once scheduling is the constraint.

The services the building has to provide

Power with the right sockets in the right places, a floor that takes the load, ventilation that copes with the heat, and drainage where it is needed. Equipment orders frequently outrun what the room can supply, and building work is slow.

Get the site preparation documents for every large item before ordering, and lay them over a floor plan. Discovering that two freezers and an incubator share a circuit is better done on paper.

Service contracts, and which ones are worth it

Contracts are worth it where a failure stops the work and where the repair needs the manufacturer: biosafety cabinets, ultra low freezers, and anything with optics or a detector. For a simple centrifuge, repair on failure is usually cheaper.

Certification is separate from service and is not optional for cabinets and hoods. Book it annually and post the date on the unit.

What to spend the last of the budget on

Consumables, tips, tubes and enough plasticware to work for a term, plus a spare of anything whose failure stops everything. A laboratory with instruments and no consumables cannot start.

Keep a contingency. Something will be missing, something will not fit, and the item you did not think of is always needed in the first fortnight.

Laboratory ovens, and the three kinds

Three ovens do different jobs and are not interchangeable. A drying oven holds a set temperature with gravity or forced convection and is for evaporating water and moisture determination. A vacuum oven dries at a lower temperature, which is what a heat-sensitive or solvent-wet material needs. A depyrogenation oven runs hot enough, typically above 250 degrees, to destroy endotoxin on glassware, and is validated for that purpose. Uniformity and recovery time are the specifications that matter, and an oven used for a validated method needs a mapping study rather than a thermometer.

Electrophysiology lab equipment, and the chain it forms

An electrophysiology rig is a chain in which the weakest link sets the noise floor: an amplifier with its headstage, a digitiser and acquisition software, micromanipulators, a microscope, a perfusion system, and the vibration table and Faraday cage everything sits in. Patch work adds a puller and a bath of glass; extracellular work adds arrays and their own amplifiers. Buying it piecemeal is normal and the integration is the hard part, so the questions are what the amplifier's software will drive and whether the digitiser's clock can be shared with the imaging path.

Gene therapy lab equipment, and what the field adds

A gene therapy laboratory is a cell culture laboratory with vector work bolted on, and the additions are specific: containment appropriate to the vector class with the institutional approval behind it, a separate area and dedicated equipment for producing virus, an ultracentrifuge or tangential flow system for concentration, digital PCR for titre, flow cytometry for transduction, and cold storage at minus eighty and in vapour phase nitrogen. Everything downstream of the vector, the analytics and the documentation, is what actually distinguishes the room from a general culture suite.

A lab hot plate, and what to check before buying one

A laboratory hot plate is specified by the surface, the control and the safety features. Ceramic tops resist chemicals and clean easily, aluminium spreads heat more evenly and marks. Control is the part that matters: a plate regulating its surface will overshoot under a small vessel, while one taking feedback from a probe in the liquid holds the temperature you asked for. Look for a hot surface indicator that stays lit after power is off, a spill-resistant housing, and a stirrer whose useful range covers the volumes on your bench rather than the maximum on the box.

Biology lab supplies, and the weekly half of the list

The equipment list is bought once and the supplies list is bought every week, and the second decides the real cost of running a laboratory: tips, tubes, plates and flasks, media and serum, buffers and salts, enzymes and kits, gloves and disinfectant, and the cold chain items that have to be received the day they arrive. Budget it per experiment rather than per catalogue line, standardise on tip and plate formats so the pipettes and readers all match, and keep one owner for reordering.

An incubater, meaning an incubator

A request for an incubater is a search for an incubator, and the choice is between a dry air unit for bacteria and a jacketed carbon dioxide unit for mammalian culture, since the second controls gas and humidity as well as temperature. Contamination control features, not temperature accuracy, are what separate models.

laboratory kits and what buying a kit actually buys

laboratory kits buy validated, matched reagents and a protocol rather than novel chemistry, which is worth paying for where the matching is the difficulty and not where the protocol is simple. The questions to ask are what the kit is validated on, how many reactions it really contains and whether its components can be bought separately.

laboratory accessories and the ones that are not optional

laboratory accessories look like a list of conveniences until one is missing: the rack that fits the tube, the adapter that fits the rotor, the tip that seals on the pipette, the seal that fits the plate. Each is specified against the instrument rather than in general, which is why they are ordered with it.

Common questions

What common laboratory equipment does a new biology laboratory need first?

A certified biosafety cabinet, a carbon dioxide incubator, refrigerated benchtop and microcentrifuges, a thermal cycler, cold storage with alarms, a balance, a pH meter, a water purification system and a working pipette set.

What biology lab equipment is better shared?

Anything used intermittently and expensive to own: confocal and high content imaging, sequencing, cytometry, mass spectrometry and ultracentrifugation. Core access usually gives better instruments and expertise for less than ownership.

How much cold storage should a new laboratory buy?

More than current need, with the failure plan written before the first sample goes in. Freezers fill faster than anyone predicts and the day a full freezer fails is the day you find out whether there was anywhere to put its contents.

New or refurbished?

Refurbished works well for mechanically simple items such as centrifuges, incubators and shakers, from a supplier offering a warranty and service. For anything with optics, detectors or a regulated role, the service history matters more than the saving.

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