Buyer's Guide
Laboratory Glassware & Consumables
A procurement guide for essential laboratory consumables — glass bottles, flasks, tubes, vials, microplates, and agarose for research, clinical, and academic laboratories.
Understanding Laboratory Glassware & Consumables
Labware and glassware are the foundational consumables that every laboratory uses daily. From the bottles that store your reagents to the tubes that hold your PCR reactions and the microplates that run your high-throughput assays, selecting the right consumables impacts cost, convenience, and experimental quality.
This guide covers five categories of laboratory consumables. For each, we explain material options, key specifications, and selection criteria to help you match products to your workflow while managing recurring consumable costs effectively.
Glass Bottles & Flasks
Laboratory glass bottles and flasks are essential for media preparation, reagent storage, solution mixing, and cell culture. Borosilicate glass (Type I) provides excellent chemical resistance and thermal shock tolerance. Available in graduated and non-graduated options with screw caps, stoppers, or vented closures.
Material
Borosilicate glass (Type I, Type III)
Volume Range
10 mL to 20 L
Styles
Media, reagent, Erlenmeyer, volumetric
Sterilization
Autoclavable to 121°C
Common Applications
- Media preparation & storage
- Reagent storage
- Bacterial culture (Erlenmeyer)
- Titration & volumetric work
Specialty Flasks
Specialty laboratory flasks include tissue culture flasks, round-bottom flasks, filtering flasks, and volumetric flasks. Tissue culture flasks feature treated surfaces for cell adhesion and vented caps for gas exchange. Round-bottom flasks are used with rotary evaporators and reaction setups.
Types
Culture, round-bottom, filtering, volumetric
Culture Surfaces
25 cm² to 225 cm²
Material
Polystyrene (culture), borosilicate (chemistry)
Closure
Vented cap, plug seal, ground glass joint
Common Applications
- Cell culture & passage
- Rotary evaporation
- Vacuum filtration
- Precise volume measurement
Tubes & Vials
Laboratory tubes and vials range from 0.2 mL PCR tubes to 50 mL centrifuge tubes. Material, wall thickness, and closure type are selected based on the application — PCR tubes need thin walls for thermal transfer, centrifuge tubes need thick walls for high RCF, and cryovials need external threading to prevent contamination during storage.
Volume
0.2 mL to 50 mL
Material
Polypropylene, polystyrene, glass
Certifications
DNase/RNase-free, pyrogen-free
Closure
Snap cap, screw cap, flat cap
Common Applications
- PCR & qPCR reactions
- Sample centrifugation
- Cryogenic storage
- Sample collection & transport
Microplates
Microplates are multi-well plates used for high-throughput assays, cell culture, sample storage, and compound screening. Available in 6, 12, 24, 48, 96, and 384-well formats with flat, round, or V-bottom well geometries. Plate material and surface treatment are selected based on the detection method and application.
Formats
6-well to 384-well
Well Geometry
Flat, round, V-bottom, conical
Material
Polystyrene (clear, white, black)
Surface
TC-treated, non-treated, high-bind
Common Applications
- ELISA & immunoassays
- Cell culture & screening
- qPCR & endpoint PCR
- Compound storage & serial dilution
Agarose
Agarose is the gel matrix for nucleic acid electrophoresis — the standard method for separating, sizing, and visualizing DNA and RNA fragments. Standard agarose is used for routine applications, while low-melting-point (LMP) agarose allows gel extraction of DNA bands. High-resolution agarose improves separation of small fragment size differences.
Types
Standard, low-melting-point, high-resolution
EEO
Low EEO for sharper bands
Gel Strength
>1,200 g/cm² (1% gel)
Purity
DNase/RNase-free, molecular biology grade
Common Applications
- DNA fragment analysis
- PCR product verification
- RNA quality assessment
- Gel extraction & cloning
How to Choose: Consumables Comparison
Compare key factors across the four main consumable categories.
| Factor | Bottles/Flasks | Tubes/Vials | Microplates | Agarose |
|---|---|---|---|---|
| Primary Use | Storage & preparation | Reactions & centrifugation | High-throughput assays | Electrophoresis |
| Reusability | Reusable (glass) | Usually single-use | Single-use | Single-use |
| Sterilization | Autoclave or dry heat | Pre-sterilized or autoclave | Pre-sterilized (gamma) | Autoclave in buffer |
| Key Selection Factor | Chemical resistance | RCF rating & volume | Well count & surface | Concentration & purity |
Key Selection Checklist
Verify these factors when ordering labware and consumables:
Frequently Asked Questions
When should I use glass versus plastic labware?
Glass labware is preferred for chemical resistance (especially to organic solvents), autoclaving, optical clarity, and applications where leachable contaminants from plastic could interfere. Plastic labware (polypropylene, polystyrene) is lighter, shatter-resistant, disposable, and preferred for molecular biology to avoid nuclease contamination. Choose glass for chemistry and reusability; choose plastic for biology and convenience.
What agarose concentration should I use for gel electrophoresis?
Agarose concentration depends on your DNA fragment sizes. Use 0.5-0.8% for large fragments (5-20 kb), 1.0% for general use (0.5-7 kb), 1.5% for medium fragments (0.2-3 kb), and 2.0-3.0% for small fragments (50-500 bp). Higher concentrations resolve smaller fragments but run slower. Low-melting-point agarose is used when you need to recover DNA from gel slices.
What is the difference between 96-well and 384-well microplates?
96-well plates have larger wells (300-400 µL capacity), are easier to pipette manually, and are standard for ELISA, cell culture, and routine assays. 384-well plates have smaller wells (80-120 µL), require multichannel or robotic pipetting, and are used for high-throughput screening, qPCR miniaturization, and reagent conservation. Choose 96-well for routine work and 384-well for high-throughput applications.
How do I choose the right centrifuge tube material?
Polypropylene (PP) tubes are the standard for most applications — autoclavable, chemically resistant, and suitable for centrifugation up to 15,000 × g. Polystyrene (PS) tubes are clear and inexpensive but not autoclavable. Glass tubes resist organic solvents but are breakable. For high-speed centrifugation (>20,000 × g), use thick-wall polycarbonate or specialized tubes rated for the required RCF.
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