Quality laboratory glassware is the foundation of accurate wet chemistry, titrations, and sample preparation. Whether you are equipping a new university lab in Lahore or upgrading an analytical facility, this checklist covers the glassware categories every research lab needs — all available through Bioworld Scientific.
Why Borosilicate Glass Matters
Always choose borosilicate glass (3.3) for lab use. It withstands thermal shock, resists most acids and bases, and maintains calibration accuracy far longer than soda-lime glass. BWS supplies borosilicate beakers, flasks, and volumetric glassware rated for routine and high-precision work.
Beakers and General Containers
- Low-form beakers — 50, 100, 250, 500, 1000 mL (most-used sizes)
- Tall-form beakers — for heating and evaporation
- Graduated beakers — approximate volume measurements
- Watch glasses — 65, 90, 125 mm covers and evaporation dishes
- Crystallizing dishes — solvent evaporation and recrystallization
Flasks
| Type | Typical Sizes | Primary Use |
|---|---|---|
| Erlenmeyer (conical) flasks | 50–2000 mL | Mixing, titrations, culturing (non-TC) |
| Round-bottom flasks | 50–500 mL | Reflux, distillation, synthesis |
| Flat-bottom flasks | 100–1000 mL | Heating on hot plates |
| Filtering flasks (Büchner) | 250–1000 mL | Vacuum filtration |
| Distillation flasks | 100–500 mL | Fractional distillation setups |
| Kjeldahl flasks | 300–800 mL | Nitrogen determination |
Volumetric Glassware
For quantitative work, invest in Class A calibrated glassware with certificates of calibration:
- Volumetric flasks — 10, 25, 50, 100, 250, 500, 1000 mL
- Graduated pipettes (Mohr) — 1, 2, 5, 10 mL for approximate transfers
- Volumetric pipettes — single-volume (1, 2, 5, 10, 25 mL) for exact aliquots
- Measuring cylinders — 10, 25, 100, 500, 1000 mL with hexagonal base
- Density bottles — specific gravity determination
Burettes and Titration Equipment
- 50 mL burette with PTFE stopcock — acid-base and redox titrations
- Burette stand and clamp — secure mounting during titrations
- White tile — background for endpoint colour detection
- Automatic burette (optional) — high-throughput QC labs
Separatory and Specialized Funnels
- Separatory funnels — 125, 250, 500 mL for liquid-liquid extractions
- Filter funnels (Büchner) — paired with filter flasks and vacuum pump
- Thistle funnels — solid addition to round-bottom flasks
- Drop funnels — controlled reagent addition during synthesis
Desiccators and Storage
- Desiccator (240 mm) — moisture-sensitive reagent storage with silica gel
- Vacuum desiccator — drying samples under reduced pressure
- Reagent bottles (amber and clear) — 250 mL to 2 L with ground-glass stoppers
- Media bottles — autoclavable solutions storage
Condensers and Distillation Accessories
Organic chemistry and natural product labs need:
- Liebig, Graham, and Allihn condensers
- Adapter tubes and connectors (ground-glass joints 14/23, 24/29)
- Thermometers and thermometer adapters
- Glass stirring rods and magnetic stir bars (often used with glass vessels)
Glassware Care Tips
- Inspect for chips and cracks before each use — discard damaged items.
- Clean with appropriate detergent; avoid abrasive pads on graduated markings.
- Store volumetric glassware upright, not stacked inside each other.
- Recalibrate Class A glassware annually or after thermal/ mechanical stress.
- Pair glassware with proper PPE when handling hot or broken glass.
Glassware vs Plasticware: When to Use Each
Glass excels in heat resistance and chemical compatibility. For sterile cell culture, PCR, and cryostorage, switch to essential plasticware. Most labs need both categories stocked.
Order Glassware from BWS in Pakistan
Bioworld Scientific supplies borosilicate glassware to research institutions nationwide. Request a bulk quote for new lab setups or individual replacements for broken items.