Laboratory Glassware for Ghana: Specifications for Schools, Colleges and Labs
Schools, colleges and university labs that buy laboratory glassware for Ghana face the same questions each time. Which glass? Which accuracy? How many of each item? This guide explains the glass properties that matter, the items practical classes use most, and how to write a spec for laboratory glassware for Ghana that bidders can price fairly.
LabExports makes and exports lab glassware from India. Its catalog groups laboratory glassware such as beakers, flasks, burettes, condensers, bottles and ground-glass components. Pricing is on request.
Why borosilicate 3.3 is the default glass
Most lab glassware is made from borosilicate glass 3.3. ISO 3585 sets out its make-up and properties. The "3.3" is its low rate of thermal expansion, about 3.3 × 10⁻⁶ per kelvin. Low expansion means the glass is far less likely to crack when it is heated or cooled.
Typical values quoted for borosilicate 3.3 are shown below. Treat them as a guide and ask the maker for its own data sheet.
| Property | Typical value | Why it matters |
|---|---|---|
| Silica (SiO₂) | About 80% | Chemical durability |
| Boron oxide (B₂O₃) | About 13% | Low thermal expansion |
| Sodium and potassium oxides | About 4% | Helps the glass melt and form |
| Aluminium oxide | About 2% | Chemical stability |
| Expansion coefficient | 3.3 × 10⁻⁶ K⁻¹ | Resists thermal shock |
| Density | About 2.23 g/cm³ | Lighter than soda-lime glass |
| Softening point | About 820 °C | Keeps its shape under strong heat |
Borosilicate 3.3 stands up well to water, most acids and most organic solvents. Hydrofluoric acid, hot phosphoric acid and strong hot alkalis do attack it, so those need other materials. It can be sterilized in an autoclave, which matters for biology and health science labs.
Glassware for WASSCE practicals and school labs
Senior high school science in Ghana leads to the WAEC WASSCE exam, which includes practical papers. In chemistry, titration and qualitative analysis are core tasks. A school lab set for these tasks usually covers:
- Burettes and pipettes for titration.
- Conical flasks and beakers for mixing and heating.
- Test tubes, boiling tubes and droppers for qualitative tests.
- Measuring cylinders, filter funnels and watch glasses.
- Reagent bottles and wash bottles for each bench.
Plan quantities per student workstation, then add spares. Items that students handle most, such as pipettes and test tubes, tend to need the most replacing. The chemistry lab glassware list explains each item's job in more depth.
University, hospital and research labs
Higher-level labs need a wider set. Group it by technique so nothing is left out:
- Distillation: round-bottom and distillation flasks, condensers (Liebig, West, Allihn), stillheads and receiver adapters.
- Extraction: Soxhlet extractors, separating funnels, and Kjeldahl flasks for nitrogen analysis.
- Filtration: Büchner funnels, filter flasks and sintered crucibles.
- Drying and storage: desiccators, crucibles, weighing bottles and amber reagent bottles.
- Gas work: gas washing bottles and Kipp's apparatus.
- Microbiology: culture tubes, Petri dishes and centrifuge tubes.
General items such as the conical flask and the beaker remain core items at every level.
Volumetric accuracy: Class A or Class B
Volumetric glassware comes in two accuracy classes. Class A has the tighter limits and suits analysis and research. Class B allows about twice the error and costs less, which suits most teaching.
ISO standards set the limits for each item. Examples are ISO 385 for burettes, ISO 648 for one-mark pipettes and ISO 1042 for one-mark volumetric flasks. Ask bidders to state the class and the standard on each line. Also ask whether items are marked "In" (to contain) or "Ex" (to deliver).
Writing a school tender spec for laboratory glassware for Ghana
A senior high school tender works best when it is written around the practical exam, not around a catalog. Start from one titration station and one qualitative analysis station, then multiply.
- Define a station set: for example one burette, one pipette with filler, two conical flasks and a beaker per titration place. Then state the number of stations per school.
- Match the exam volumes: use the burette and pipette sizes your practical guides call for, so students practise with the same kit they meet in the exam.
- Class B is usually enough: school practicals rarely need Class A. Saving there leaves budget for spares.
- Prefer PTFE stopcocks on student burettes: they need no grease and are less likely to seize.
- Name the glass, not a brand: "borosilicate 3.3" keeps the tender open and bids comparable.
University and research tenders need fuller item specs. The laboratory glassware buying guide covers those points.
Shipping and receiving in Ghana
Sea freight from India to Ghana usually lands at Tema, the main port serving Accra. Takoradi serves the western region. Air freight into Accra suits small or urgent orders.
For a multi-school order, ask for each case to be marked with the school name and a case number that matches the packing list. That makes it much easier to split the consignment after clearance at Tema. When the cases reach each school, staff should open them promptly, check contents against the list, and report breakage with photos while the claim window is still open.
Next steps
For Ghana's public buying process, read the Ghana tender guide. If you are bidding, LabExports' tender paperwork support can supply spec sheets and quotations. Schools that need more than glassware can review chemistry lab equipment for Ghana. Send your list of laboratory glassware for Ghana, with quantities and the delivery city, through the quote request page.