Laboratory Operations & Safety

Lab Operations & Safety

Lab operations is the practical, bench-level discipline of actually running a research laboratory day to day: the chemical hazard controls, standard protocols, equipment maintenance, biological and physical safety practices, space and sample management, and procurement decisions that keep a lab productive and its people safe. It is written for a different reader than most of CASRAI’s coverage — not primarily the research administrator managing awards and compliance paperwork, but the bench scientist, lab manager, safety officer, or new graduate student who needs to know how to calibrate a pipette, read a Safety Data Sheet, certify a biosafety cabinet, or dispose of a peroxide-forming chemical correctly.

That makes lab operations deliberately adjacent to, rather than folded into, CASRAI’s nine research-administration and compliance clusters. Where those clusters cover the systems, funding rules, and institutional processes around research, this one covers the physical and procedural work of the lab itself. There is real overlap at the edges — chemical hygiene training intersects institutional compliance, and equipment purchasing intersects federal cost-accounting rules — and this page calls those connections out where they occur. This hub organizes the area into six practical sub-areas: chemical safety, lab protocols and bench technique, equipment operation and maintenance, biological/radiological/physical hazard safety, lab space and inventory management, and procurement and vendor management. Three of the six — chemical safety, protocols and bench technique, and equipment operation and maintenance — have grown large enough to have their own dedicated hub pages, linked below; the other three are newer and still filling in, and are covered directly on this page for now.

Chemical Safety and Hazard Communication

Chemical safety is the single largest sub-area in lab operations, and the one most directly shaped by federal regulation. In the United States, laboratories that use hazardous chemicals are governed by OSHA’s Occupational Exposure to Hazardous Chemicals in Laboratories standard, 29 CFR 1910.1450 — commonly called the Lab Standard — which requires every covered lab to develop and follow a written Chemical Hygiene Plan (CHP). CASRAI’s guide to how to write and maintain a Chemical Hygiene Plan walks through what the plan has to contain, and the companion guide on Chemical Hygiene Plan training requirements covers what OSHA expects labs to actually teach employees, not just document. Most labs designate a Chemical Hygiene Officer with the authority to implement the plan, and larger institutions build broader chemical-safety programs around that role.

Hazard communication starts with the label and the Safety Data Sheet. Since OSHA aligned its Hazard Communication Standard with the UN’s Globally Harmonized System (GHS), every hazardous chemical container must carry a standardized label with a pictogram, signal word (“Danger” or “Warning”), and hazard statement — see CASRAI’s guide to understanding GHS labels for how to read them, and the companion piece on reading a Safety Data Sheet for how the 16-section GHS-format SDS backs the label up with full hazard, handling, and first-aid detail. Chemicals decanted out of their original container into a smaller vessel still need a compliant label under OSHA’s HazCom rules — see the secondary container labeling guide for what that label has to include and when a simple “contents” note is not enough.

Knowing a chemical’s hazard class is the starting point for handling it correctly. CASRAI’s primer on common lab chemical hazard classes is a good first stop for new lab members, and several guides go deeper on specific classes: corrosive chemicals, water-reactive and pyrophoric compounds, and peroxide-forming chemicals, which need periodic testing and have their own disposal timelines because they become shock-sensitive as they age. A separate category, particularly hazardous substances — select carcinogens, reproductive toxins, and chemicals with high acute toxicity — carries additional CHP-mandated controls under the Lab Standard beyond routine hazard communication.

Storage and containment round out the picture. NFPA 30, the Flammable and Combustible Liquids Code, together with OSHA rules, sets the requirements CASRAI’s flammable liquid storage cabinet guide covers — cabinet construction, labeling, and maximum quantities outside of approved storage. The broader chemical storage compatibility guide explains why acids, bases, oxidizers, and flammables need to be physically segregated rather than shelved alphabetically, a mistake that is still common in teaching labs. Ventilation is its own control: the fume hood certification and inspection guide explains how often a hood needs to be tested and what an inspection actually checks. Personal protective equipment closes the loop — see PPE selection for chemical handling and the more detailed chemical-resistant glove selection guide, since no single glove material resists every chemical class. Waste generated along the way has its own rules too: see satellite accumulation area requirements for what governs chemical waste at the point of generation, and chemical inventory management systems and best practices for tracking what’s on hand in the first place. This is the deepest sub-area in lab operations and has its own dedicated hub — see the Chemical Safety hub for the complete set of guides.

Lab Protocols and Bench Techniques

Underneath any lab’s chemical and equipment safety program is the actual bench work: the protocols and quantitative techniques researchers use every day. Nearly every lab runs on Standard Operating Procedures — CASRAI’s SOP dictionary entry defines the term, and the practical guide to writing a lab SOP gives new lab managers a template and structure to start from rather than reinventing the format for every procedure.

Sterile and aseptic work sits at the center of most wet-lab technique. CASRAI’s complete guide to aseptic technique covers the core principles behind keeping cultures and reagents free of contamination, and the cell culture basics guide builds on it for anyone new to maintaining mammalian or microbial cell lines. Cells that need to be preserved long-term follow a distinct workflow covered in the cryopreservation protocol and best practices guide, which connects directly to the freezer inventory tracking discussed later on this page.

Liquid handling is a skill most new lab members are never formally taught, which is why pipetting errors are one of the most common sources of irreproducible results. See CASRAI’s guide to pipetting technique for accuracy and precision fundamentals, the companion piece on micropipette types for choosing single-channel versus multichannel tools, and pipette calibration for how often instruments actually need to be checked against a reference standard, not just trusted by default. The underlying math behind most bench prep is covered in molarity and solution calculations, serial dilution technique, and the broader buffer and solution preparation guide.

Molecular biology technique makes up a large share of this sub-area. CASRAI covers the standard workflows end to end: DNA extraction, RNA extraction, setting up a PCR reaction, agarose gel electrophoresis, Western blotting, and ELISA. Reading out results on a spectrophotometer is its own technique with its own error sources — the UV-Vis spectrophotometer basics guide explains how absorbance relates to concentration and where instrument-level calibration (covered under equipment maintenance below) becomes a technique issue rather than a hardware issue. This sub-area also has its own dedicated hub — see the Protocols and Lab Techniques hub for the full set.

Equipment Operation, Calibration, and Maintenance

A protocol is only as reliable as the equipment it runs on, and equipment that isn’t calibrated or maintained on a real schedule is a silent source of bad data long before it visibly fails. Sterilization equipment is a good example of how operating knowledge and maintenance discipline intersect: CASRAI’s guide to autoclave cycle types explains the difference between gravity-displacement, pre-vacuum, and liquid cycles and when each is appropriate, while autoclave validation using biological and chemical indicators covers how a lab actually confirms a cycle achieved sterilization rather than assuming it did, and the autoclave troubleshooting guide covers the common failure modes in between full validation cycles.

Biosafety cabinets get their own depth here because correct use, cleaning, and certification are three separable skills. How to properly use a biosafety cabinet covers airflow, sash height, and hand movement technique; biosafety cabinet cleaning and decontamination covers the routine and terminal cleaning side; and Class I vs. II vs. III biosafety cabinets explains the operational differences between cabinet classes that correspond to different biosafety levels of work. Certification is a distinct, recurring requirement: NSF/ANSI 49 is the standard that governs biosafety cabinet design, construction, performance, and field certification testing, and CASRAI’s biosafety cabinet certification guide covers what that annual (or post-relocation) field test actually checks. Chemical fume hoods have a parallel but distinct set of concerns, covered above in the chemical-safety section via the fume hood sash height and safe operating practices guide.

Analytical instruments need their own calibration discipline, separate from the protocols that run on them. See CASRAI’s guides to analytical balance calibration, pH meter calibration and buffer selection, spectrophotometer calibration (wavelength and photometric accuracy checks, distinct from the technique-level UV-Vis guide above), and microplate reader calibration and maintenance. Environmental equipment gets the same treatment: CO2 incubator calibration and temperature uniformity mapping and Milli-Q water purification system maintenance both cover recurring checks that are easy to defer and expensive to skip. Centrifugation rounds out the equipment picture: RCF vs. RPM conversion explains why a protocol’s stated relative centrifugal force has to be converted to an actual rotor speed rather than treated as interchangeable with RPM, and centrifuge rotor balancing covers the safety side of an imbalanced spin. This is the third sub-area with its own dedicated hub — see the Equipment Operation & Maintenance hub for the complete set.

Biological, Radiological, and Physical Hazard Safety

Chemical hazards are not the only hazard class a working lab manages day to day, and this sub-area — covering biological, radiological, and physical safety together — is currently below the guide count needed for its own hub page, though the content is real and growing. Biological work above the most basic containment level is governed by the CDC/NIH’s Biosafety in Microbiological and Biomedical Laboratories (BMBL) framework, which defines four ascending biosafety levels, and most institutions require review by an Institutional Biosafety Committee before BSL-2 or higher work can begin. The laser safety classes guide covers the parallel Class 1 through Class 4 hazard scale for laser work, a physical hazard many labs handle with far less formal training than chemical or biological hazards receive.

Radiation safety follows the ALARA principle — As Low As Reasonably Achievable — and CASRAI’s guide to applying ALARA through time, distance, and shielding explains how those three controls work together in routine radioisotope work. Personnel working with radioactive material are typically issued a monitoring badge, covered in how dosimetry badges work, including exchange schedules and how to interpret an exposure report; most institutions manage this through a Radiation Safety Committee. Radioactive waste follows its own disposal path, covered in radioactive waste disposal and decay-in-storage, where short-half-life isotopes are held under license until their activity decays to background levels rather than being shipped offsite as radioactive waste.

Physical and mechanical hazards round out the sub-area. Autoclave operating safety covers steam burns and pressure-related injuries as a distinct concern from the sterilization-validation content covered under equipment maintenance above, and liquid nitrogen and cryogen handling safety covers oxygen displacement risk, cryo-burns, and Dewar safety — a real hazard in any lab running a cryopreservation program. Two guides cover emergency response specifically: needlestick injury response, which every lab handling sharps should have posted, and chemical spill kits, covering what to stock and how to respond when a spill happens rather than after.

Lab Space, Sample, and Inventory Management

Running a lab also means managing the physical space and the samples and materials inside it, a sub-area that is newer to CASRAI’s coverage and still filling in. Sample tracking is foundational: lab freezer inventory systems covers how labs track biological samples across ultra-low freezers, liquid nitrogen storage, and standard cold storage without losing track of what’s where, and barcode and RFID labeling for sample and inventory tracking covers the physical tracking technology behind that. Where a sample’s provenance and handling history matter — increasingly true as labs support downstream regulatory or publication requirements — the sample chain of custody guide covers what documentation is expected and how it differs from routine inventory logging; formal biorepositories that need to demonstrate this rigorously often work toward ISO 20387, the international biobanking standard.

Chemical inventory management deserves its own mention here even though the chemical-hazard content itself lives in the chemical-safety sub-area above: choosing a chemical inventory management system covers the software and process side of the problem, distinct from the chemical hazard classes and storage rules covered earlier.

Space planning and lab closure are the two bookends of this sub-area. New facility design increasingly has to decide how much space is genuinely wet-lab versus computational or write-up space — see wet lab vs. dry lab space planning. At the other end of a lab’s life, closing one out cleanly is its own project: lab equipment disposition when a lab closes covers surplus, transfer, and disposal decisions, and chemical waste disposal procedures for a closing laboratory covers the accelerated waste-clearing process a closure usually requires, distinct from the routine satellite accumulation practices covered under chemical safety above.

Lab Procurement and Vendor Management

The smallest of the six sub-areas by guide count, procurement and vendor management is also where lab operations most directly touches research administration, since equipment and material purchases on a federal award are subject to 2 CFR 200’s equipment definition and capitalization rules even though the day-to-day decisions — what to buy, from whom, new or used — are made at the bench and lab-management level covered here. CASRAI’s guide to the lab operations manager role is a natural starting point for this sub-area, since procurement, vendor relationships, and space and equipment decisions typically converge in that position.

Buying decisions have their own tradeoffs: the used vs. refurbished lab equipment guide covers what to check before buying pre-owned analytical or general lab equipment, and group purchasing organizations for research institutions covers how GPOs can reduce cost on standard consumables and equipment without every lab negotiating its own vendor terms.

Shipping biological and hazardous materials is a specialized compliance area within procurement. Under DOT and IATA dangerous goods rules, infectious substances are classified as either Category A (capable of causing permanent disability or life-threatening or fatal disease in otherwise healthy humans or animals) or Category B (an infectious substance that doesn’t meet the Category A criteria) — see CASRAI’s guide to shipping biological substances by air for how that classification is made, which connects to the CDC/NIH’s own Category A bioterrorism agents and Select Agent List designations for the highest-consequence organisms. Anyone packing and shipping these materials needs specific hazmat shipping training and certification under DOT/IATA rules, renewed on a recurring cycle rather than completed once. Temperature-sensitive biological reagents add a further layer, covered in cold-chain shipping requirements for biological reagents — packaging, documentation, and the temperature ranges a shipment has to stay within; where the material itself is being transferred between institutions rather than purchased from a vendor, the receiving and sending labs typically also need a Material Transfer Agreement in place, the same instrument covered in more legal depth on CASRAI’s technology-transfer coverage.

Where lab operations fits alongside CASRAI’s other clusters

Lab operations is CASRAI’s newest and most deliberately different cluster. The other nine are all, in one way or another, about the systems around research: funding, credit, data governance, integrity, publishing, and administration. This one is about the lab itself — the bench, the fume hood, the freezer, the loading dock. That’s a genuine change of altitude, not a stretch of an existing cluster, and it’s included because the people who run labs need practical, accurate reference content as much as the people who administer them do, and because CASRAI can serve both audiences honestly without pretending they’re the same reader.

The overlap with CASRAI’s compliance-focused clusters is real, though, and worth naming directly. Chemical hygiene training and biosafety committee review are institutional compliance functions as much as bench-safety ones. Equipment procurement on a federal award runs into the same 2 CFR 200 cost-accounting rules covered in CASRAI’s grants-management coverage. And a Material Transfer Agreement moving a biological reagent between labs is the same instrument, functioning the same way, whether the context is a lab manager restocking reagents or a technology-transfer office negotiating a research collaboration. Readers who land here from a research-administration angle rather than a bench-science one may also want CASRAI’s broader clusters on grants management, research integrity and compliance, and technology transfer.

This hub, and the six sub-areas underneath it, is genuinely still growing. Three sub-areas — chemical safety, protocols and lab techniques, and equipment operation and maintenance — have already reached their own dedicated hub pages; the other three, covered directly on this page for now, will get the same treatment as their guide counts grow. Treat the links here as the current, honest state of the coverage, not a finished catalog.

Frequently asked questions

Is lab operations content the same as CASRAI’s research-administration content?
No. It’s deliberately adjacent rather than folded in — practical, bench-level operations and safety content for the people running a lab day to day, rather than the funding, compliance, and administrative-systems content that makes up CASRAI’s other nine clusters. The two overlap at real points, called out above, but they serve different primary readers.

Why do only three of the six sub-areas have their own hub page?
CASRAI builds a dedicated sub-cluster hub once a sub-area has enough published guides to support one. Chemical safety, protocols and lab techniques, and equipment operation and maintenance have crossed that threshold; biological/radiological/physical hazard safety, lab space and inventory management, and lab procurement and vendor management are still growing toward it and are covered directly on this page in the meantime.

What’s the difference between a biosafety cabinet’s class and a lab’s biosafety level?
They’re related but distinct. Biosafety cabinet class (I, II, or III) describes the physical containment equipment and the airflow protection it provides; biosafety level (BSL-1 through BSL-4, per the CDC/NIH’s BMBL framework) describes the overall containment program for a given lab or procedure, of which the cabinet is one component alongside practices, training, and facility design.

Does a lab need special training to ship biological samples?
Yes, if the material is regulated as a dangerous good. Anyone who packages or ships infectious substances, diagnostic specimens, or dry-ice-packed biological material under DOT or IATA rules needs current hazmat shipping training, renewed on a recurring cycle, not a one-time certification.