Labplas TWIRL'EM Opaque bags are opaque, printed, single-use sampling bags for collecting and transporting samples whose contents you don't want visible. They have the same built-in wire closure as other TWIRL'EM bags: twirl and fold to seal waterproof and airtight.
This page covers two sizes, 4.5 × 9 in and 4.5 × 12 in, with the standard 2-round-wire closure. Please contact Cambridge to confirm availability before ordering. TWIRL'EM bags are available in Canada from Cambridge Environmental Products with CAD pricing and Canadian purchasing support.
Labplas produces TWIRL'EM bags with dry heat during film extrusion (above 220 °C / 428 °F), which its data sheet rates at a sterility assurance level (SAL) of 10⁻³. Labplas also lists them as DNase-free, RNase-free and non-pyrogenic. These bags are not irradiated and are not supplied with a sterility certificate. If your procedure requires certified sterile bags, choose TWIRL'EM Clean Room.
The opaque film hides the bag's contents. For a bag you can see through, see TWIRL'EM Clear or TWIRL'EM Write-On.
Twirl the bag by the wire ends to wind the top closed, then fold the wires over to lock it. The sample is sealed waterproof and airtight for transport, without caps, clips or heat sealers. A tear-off perforated top keeps the opening clean until you sample.
The polyethylene-blend film meets FDA 21 CFR 177.1520 and EU Regulation No 10/2011 for food contact, according to Labplas. That matters when bags hold food samples or product destined for testing.
Labplas lists a 5-year shelf life when stored dry at room temperature, so cases of 1,000 can be kept on hand without waste.
| Code | Size (in) | Size (mm) | Thickness | Case |
|---|---|---|---|---|
| EPN-4590 | 4.5 × 9 | 114 × 229 | Contact us | 1,000 |
| EPN-4512 | 4.5 × 12 | 114 × 305 | Contact us | 1,000 |
| Material | Polyethylene blend |
| Sterility | Produced by dry heat during film extrusion above 220 °C (428 °F), SAL 10⁻³ (per Labplas). Not irradiated; no sterility certificate. |
| Other | DNase-free, RNase-free, non-pyrogenic (per Labplas) |
| Food contact | FDA 21 CFR 177.1520; EU Regulation No 10/2011 (per Labplas) |
| Closure | Standard: 2 round wires |
| Opening | Tear-off perforated top |
| Shelf life | 5 years, stored dry at room temperature |
| Manufacturer | Labplas Inc., Canada |
Material, sterility, compliance and shelf-life details are from the Labplas technical data sheet for TWIRL'EM bags (EPR-5590). Contact Cambridge for the data sheet for a specific code.
Cambridge Environmental Products is a Canadian-owned laboratory supply distributor based in Ontario and has served Canadian labs since 1993. We supply Labplas TWIRL'EM sampling bags with CAD pricing and shipping across Canada. We work with food and beverage QA/QC labs, wastewater and environmental labs, agriculture, research laboratories, and universities and colleges, and can help with quotes, standing orders and choosing the right bag. Also see TWIRL'EM Clear, TWIRL'EM Clean Room and TWIRL'EM Write-On, or browse our wastewater & environmental testing and lab supplies collections.
They're opaque, single-use sampling bags for samples whose contents shouldn't be visible during transport or handling.
Hold the wire ends, twirl the bag to wind the top closed, then fold the wire ends over to lock it. This gives a waterproof, airtight seal.
No. Labplas produces them with dry heat during film extrusion (SAL 10⁻³), but they are not irradiated and don't come with a sterility certificate. For certified sterile bags, choose TWIRL'EM Clean Room.
Yes. Labplas states the film meets FDA 21 CFR 177.1520 and EU Regulation No 10/2011 for food contact.
Every code on this page comes in cases of 1,000.
Please contact Cambridge to confirm availability and lead time before ordering.
Yes. Labplas is a Canadian manufacturer, and Cambridge Environmental Products supplies TWIRL'EM bags across Canada with CAD pricing.
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We'll recommend the right TWIRL'EM bag and size.
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