The Breville|PolyScience 300 Series is a premium chamber sealer with a maintenance-free dry piston pump, three programmable presets and a marinate cycle. It’s built for serious home cooks and small restaurants — but it weighs about 55 lb. PolyScience’s external 150 Series sealer has been discontinued.
Who is PolyScience?
PolyScience built its reputation on professional sous vide circulators and culinary tools used in restaurant kitchens. In 2014 its culinary division joined Breville, and products are now sold as Breville|PolyScience. This is a research-based review using Breville’s product pages and retailer specifications; we haven’t tested these machines. See how we review.
Breville|PolyScience 300 Series Chamber Vacuum Sealer
A heavy-duty chamber sealer with a maintenance-free dry piston pump, three programmable presets and a marinate cycle; it seals liquids easily but weighs about 55 lb.
- Sealer typeChamber
- Vacuum settings3 programmable presets (vacuum, hold, seal) + marinate
- Seal bar11.5 in
- Built-in bag storageNo
- Bag cutterNo
- Dry piston pump — no oil changes
- Programmable presets and marinate cycle
- Seals liquids in the bag
- About 55 lb — needs a permanent home
- Warranty terms not published on the product page
Affiliate link. Prices and availability change — check Amazon for current details.
300 Series chamber sealer: key features
- Dry piston pump — maintenance-free, with no oil changes.
- Three programmable presets for vacuum, hold and seal, plus a marinate cycle.
- Seals liquids — soups, brines and marinades stay in the bag.
- Seal bar about 11.5 inches and a chamber of roughly 13.8 × 12 × 4.3 inches (retailer figures).
- Size — about 18.2 × 14 × 11.8 inches and roughly 55 lb.
Who should consider it
Cooks who vacuum seal liquids, compress fruit, infuse or pickle regularly, and want programmable consistency. For occasional use, a lighter chamber sealer like the Anova Precision Chamber makes more sense.
The discontinued 150 Series
Breville lists its external 150 Series (VSCR-150) as discontinued. It had a 12.75-inch seal bar, auto seal, Seal Plus, pulse and an external vacuum port. Breville hasn’t named a replacement external sealer, so look at our best vacuum sealers for current alternatives.
Spare parts and support
For any premium chamber sealer, check the availability of lid gaskets, seal bar tape and seal wires before you buy, and confirm warranty terms with the retailer — Breville’s product page didn’t state them at the time of our research.
Pros
- Maintenance-free dry piston pump
- Programmable presets and marinate cycle
- Seals liquids
- Professional brand heritage
Cons
- About 55 lb — needs a permanent spot
- Premium pricing
- Warranty terms not stated on the product page
Alternatives
| Product | Vacuum settings | Seal bar | Dimensions | Weight | Warranty | Price & availability | Our guide |
|---|---|---|---|---|---|---|---|
| Breville|PolyScience 300 Series Chamber Vacuum Sealer Premium Chamber |
3 programmable presets (vacuum, hold, seal) + marinate | 11.5 in | 18.2 × 14 × 11.8 in | ≈55 lb | Not stated | Check on Amazon | Read guide |
| Anova Precision Chamber Vacuum Sealer Compact Chamber Pick |
Infuse, Compress/Pickle, Dry/Cool, Manual | 11.8 in | 13.6 × 11.2 × 8.9 in (chamber 12 × 8.6 × 3 in) | ≈13.6 lb | 2 years | Check on Amazon | Read guide |
| VacMaster VP112S Chamber Vacuum Sealer Best Under-Cabinet Chamber |
Adjustable vacuum time (20–70 s) and seal time | 12 in | Chamber 12 × 11 × 5 in | ≈46 lb | Not stated | Check on Amazon | Read guide |
| VacMaster VP215 Chamber Vacuum Sealer Best Chamber Sealer |
Adjustable vacuum & seal time | 10 in removable | Chamber 11.25 × 15.25 × 5 in | ≈84 lb | 1-year limited | Check on Amazon | Read guide |
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Frequently asked questions
Is PolyScience owned by Breville?
PolyScience’s culinary division joined Breville in 2014, and its kitchen products are sold under the Breville|PolyScience name.
Does the PolyScience 300 Series need oil?
No — it uses a maintenance-free dry piston pump.
Final recommendation
The 300 Series suits cooks who want professional-style chamber features and have space for a heavy machine. Most home cooks will be happier with a lighter chamber sealer — compare options in our chamber vacuum sealer guide.
Affiliate disclosure: As an Amazon Associate, we earn from qualifying purchases. This does not affect our editorial opinions or recommendations. Learn more.
