Labplas TWIRL'EM Write-On bags are clean, single-use sampling bags with a printed writing area, so the sample ID, date, location and sampler can be recorded right on the bag. The built-in wire closure seals them waterproof and airtight with a simple twirl and fold, and a tear-off perforated top keeps the opening clean until you sample.
This page covers eight Write-On bags in two closure styles: the standard closure (2 round wires) and the heavy sample "MixWire" closure (1 round + 1 flat wire) for denser samples. Sizes run from 3.5 × 7 in to 7 × 12 in. They're used in food and beverage QA/QC, wastewater and environmental field sampling, agriculture, research laboratories, and universities and colleges. 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. If your procedure requires certified sterile bags, choose TWIRL'EM Clean Room.
Record sample details directly on the bag. You don't need separate labels, which can fall off when bags get wet or cold, and there's less risk of mixing up samples.
The standard closure (2 round wires) suits most samples. The heavy sample "MixWire" closure (1 round + 1 flat wire) gives a stronger hold for denser or heavier samples such as soil, sludge, meat or feed.
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.
Choose the Closure first, then the Size. For a plain clear bag without printing, see TWIRL'EM Clear.
| Code | Closure | Size (in) | Size (mm) | Thickness | Case |
|---|---|---|---|---|---|
| EPR-3070 | Standard | 3.5 × 7 | 89 × 178 | 3 mil | 1,000 |
| EPR-4515 | Standard | 4.5 × 15 | 114 × 381 | 2.5 mil | 1,000 |
| EPR-5590 | Standard | 5.5 × 9 | 140 × 229 | 3 mil | 1,000 (2 × 500) |
| EPR-7012 | Standard | 7 × 12 | 178 × 305 | 3 mil | 1,000 |
| EPR47012 | Standard | 7 × 12 (heavy gauge) | 178 × 305 | 4 mil | 1,000 |
| EFR-4590 | Heavy Sample (MixWire) | 4.5 × 9 | 114 × 229 | 2.5 mil | 1,000 |
| EFR-5590 | Heavy Sample (MixWire) | 5.5 × 9 | 140 × 229 | 3 mil | 1,000 |
| EFR-7012 | Heavy Sample (MixWire) | 7 × 12 | 178 × 305 | 3 mil | 1,000 |
| Application | How These Bags Help |
|---|---|
| Field water sampling | Write the site, date and time on the bag; the closure seals waterproof for transport. |
| Soil and sludge sampling | The heavy sample closure holds denser material securely. |
| Food sampling | Food-contact compliant bags with traceable labelling; for certified sterile sampling, use the Clean Room bags. |
| Molecular work | Labplas lists the bags as DNase-free and RNase-free. |
| 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. Heavy Sample (MixWire): 1 round + 1 flat wire. |
| 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.
Writing area: printed on the bag for sample identification.
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 Opaque, or browse our wastewater & environmental testing and lab supplies collections.
They're single-use sampling bags with a printed writing area for recording sample details, used in food, environmental, agricultural and research sampling.
The standard closure uses 2 round wires and suits most samples. The heavy sample "MixWire" closure uses 1 round and 1 flat wire for a stronger hold on denser or heavier samples.
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.
Both are 7 × 12 in with the standard closure. EPR-7012 is 3 mil film; EPR47012 is heavier 4 mil film.
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.
Yes. Labplas lists water and sewage among its applications, and the write-on area helps keep field samples traceable.
Every code on this page comes in cases of 1,000.
Yes. Labplas is a Canadian manufacturer, and Cambridge Environmental Products supplies TWIRL'EM bags across Canada with CAD pricing.
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