Specimen bag order mix across Canadian laboratory tiers comes down to matching bag footprint and wall construction to the specimens each bench handles. A 95 kPa bag is ordered in four common sizes, 6 by 9, 7 by 11, 8 by 10 and 12 by 15 inches, each supplied as a 100-pack, with a three-wall format available where an absorbent layer and a documentation pocket are needed. The case counts below are planning examples built from those stated pack sizes rather than a shipment study, so a laboratory can substitute its own daily volume.
What bag sizes and wall formats do Canadian laboratories order?
| Bag format | Size | Bench it usually serves |
|---|---|---|
| 95 kPa specimen bag | 6 x 9 in | Small primary containers on short routes |
| 95 kPa specimen bag | 7 x 11 in | Tall containers and tube racks |
| 95 kPa specimen bag | 8 x 10 in | General mid-size specimen handling |
| 95 kPa specimen bag | 12 x 15 in | Several specimens in one shipment |
| Three-wall transport bag | 6 x 9 in | Absorbent layer plus documentation pocket |
Wall construction matters as much as size. A single-wall 95 kPa bag holds a leak-proof primary container; a three-wall bag adds an absorbent layer and a separate pocket for paperwork, which keeps the requisition off the specimen. A laboratory that keeps both formats on one bench usually labels the drawer by route rather than by size.
What does the 95 kPa figure actually mean?
The 95 kPa figure is a pressure differential, not a weight and not a thickness. It is the packaging performance required for Category B infectious substances under the UN3373 transport rules, expressed through IATA Packing Instruction 650 for air movement. A bag that meets the figure is tested to hold that differential without leaking, which is a different property from how the bag feels in the hand.
That distinction shows up in ordering. Two 6 by 9 bags can print the same size and still differ on the pressure test, so a laboratory switching supplier should confirm the certification on the listing before the case is reordered.
How does the order mix change with laboratory tier?
A physician-office laboratory, a community laboratory and a high-volume reference laboratory buy the same four sizes in very different proportions. The office bench runs mostly 6 by 9 and 8 by 10, with a single case lasting months. A community laboratory adds 7 by 11 for tube racks and keeps 12 by 15 for grouped shipments. A reference laboratory orders the larger footprint in volume and layers the three-wall format on top for routes that carry paperwork.
Translate that into a planning example. If a bench uses ten bags a working day across 240 days, the year lands near 2,400 bags, or twenty-four 100-packs. If two thirds of those are 6 by 9 and the rest are 8 by 10, the split is roughly sixteen cases of the smaller size and eight of the larger. Treat the arithmetic as a starting point for a first purchase order, not as a forecast.
How should a laboratory test a new bag before changing the order mix?
Before a whole case is committed, run the format through the route it will actually travel. Fill the bag with a representative primary container, seal it, and handle it the way the courier will. Watch the seal line and the documentation pocket, because those are the two places a size change shows up first.
Keep the result with the batch record. A one-page note naming the bag, the size, the date and the outcome is enough to justify the switch to a second bench.
Ordering for a clinic, lab or care home? Wholesale and multi-site ordering covers case pricing and account setup, and the B2B wholesale collection lists the lines stocked for institutional buyers.
Related reading
diagnostic laboratories hub; a Canadian laboratory spore test failure investigation; laboratory centrifuges in Canada and the US; 6 by 9 inch 95 kPa specimen bags; three-wall specimen transport bags.
Frequently Asked Questions
What sizes do 95 kPa specimen bags come in?
The line is ordered in 6 by 9, 7 by 11, 8 by 10 and 12 by 15 inches, each supplied as a 100-pack, with a three-wall 6 by 9 format for absorbent and documentation needs.
What does 95 kPa mean on a specimen bag?
It is a pressure differential required for Category B infectious substances under the UN3373 transport rules, expressed through IATA Packing Instruction 650.
How many specimen bags does a laboratory use in a year?
Ten bags a working day across 240 days is about 2,400 bags, or twenty-four 100-packs; split that across sizes to match the bench.
How do I check a new bag before ordering a case?
Fill a sample with a representative primary container, seal it, and handle it as the courier will, then keep the outcome with the batch record.
CliniEco Medical is a licensed medical device establishment (MDEL #35334).
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