Sterile Petri Dish 100 × 15 mm — Polystyrene, 500/Case

Case of 500, supplied sterile and empty, so each lab pours the medium it has already validated. Once a plate has been read it leaves as biohazard waste, which is why the bench set-up usually includes red 30-gallon biohazard waste bags, 5 per pack alongside the dish itself.

What does one 100 × 15 mm plate cost in a case of 500?

A case is $159.99 for 500 dishes, so one plate lands at about 32 cents: 159.99 divided by 500 is 0.31998. That is the number a plant or water laboratory needs when it costs a sampling programme, because a plate count series consumes dishes by the dozen before any incubation time is booked. The case price is the current price on this listing; the per-plate figure is arithmetic on it rather than a second price schedule, and it holds for every method that uses the same 100 × 15 mm format.

Which plate format do routine colony counts actually expect?

100 × 15 mm is the general-purpose format that most validated methods name for pour plates, spread plates and streak plates: the diameter gives a countable surface without crowding colonies, and the depth leaves room for a poured medium layer. Smaller formats exist for specific methods, so the rule is to match whatever the written procedure specifies rather than substituting. The vented lid allows gas exchange during incubation; keep the dish flat and stacked no higher than the method allows so the lid does not lift.

How do you keep plates sterile in storage, and how are they disposed of?

Keep the sleeve closed until the plate is needed, work from one sleeve at a time, and never return an opened plate to the sleeve — a lid that has been off on a bench is no longer sterile, and the medium will show it. These dishes are polystyrene and single use: they deform in an autoclave, so glass is the reusable option if the workflow is heat-based. After reading, plates go into the biohazard waste stream rather than general refuse, sealed in the bag the waste carrier accepts.

Plate and consumable volumes for a sampling programme can be modelled on the sampling programme planner; culture and media-preparation templates print from the compliance log centre, which also carries the sterilization log generator for the reusable glassware side. Laboratory and multi-site volumes are quoted at wholesale ordering, and method or documentation questions can be raised with the compliance desk.

CliniEco Medical brings this dish into Canada under MDEL #35334, and lot documentation is available with the case.

Standard 100 x 15 mm petri dishes in optically clear polystyrene, supplied sterile in cases of 500. The shallow profile and uniform wall thickness make colony counting and plate photography repeatable between operators.

Sold as empty, sterile dishes — agar and media are not included. That keeps the plate suitable for whichever prepared medium your lab already validates, and avoids the shipment and shelf-life problems that come with pre-poured plates.

Who it is for

• Food and beverage plant microbiology labs running routine plate counts
• Environmental and water testing laboratories
• School, college and university teaching labs
• Compounding pharmacies and clinics performing sterility checks

Specifications

Ordering and compliance notes

Pair with inoculating loops, spreaders and colony counters for a complete bench set-up. If your workflow uses pre-poured or pre-prepared plates with agar, that is a separate product family with its own supply and regulatory treatment.

Related reading

• Food plant microbiology lab: starter supply checklist
• USP 71 sterility testing explained
• Microbiology lab: sampling, verification and record-keeping

Buying for a clinic, lab or care home? Order the case size online, or request a B2B quote for volume pricing, standing orders and purchase-order terms at CliniEco bulk quote.