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Polyscience 300 Series Chamber Vacuum Sealer

Sugg. Price $1,499.95 Our Price $999.95

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This professional-quality chamber vacuum sealer works beautifully for both solid foods and liquids, so it's ideal for sealing everything from coffee beans or fresh veggies to a big batch of homemade soup. Programmable functions allow you to customize the vacuum level for the type of food you're sealing—or use the special marinate function to quickly infuse foods with flavorful marinades.

  • Top-of-the-line sealer delivers maximum power, capacity and versatility to help you keep foods fresh longer—whether they’re stored in the fridge, freezer or pantry.
  • Simple one-touch controls ensure foolproof operation.
  • Three preset cycles can be programmed to deliver precise vacuum levels and seal times for meats, fish and infusions.
  • Preset cycle marinates meats and vegetables without lengthy wait times.
  • Extra-large chamber easily accommodates expanded different plastic pouch sizes. (an assorted set of bags is included).
  • Built-in vacuum accessory port with flexible hose makes it easy to seal canisters or jars.
Dimensions & More Info
  • 16 3/4" x 14 1/4" x 14" high.
  • 60 lb. 8 oz.

Additional Information

  • Model: Polyscience 300 Series #VSCH-300 AC1B.
  • Includes BPA-free plastic bags in a variety of sizes: six 1-pint bags, six 1-qt. bags, and six 1-gallon bags.
  • Professional-grade stainless-steel housing is durable and easy to clean.
  • Made in China.
  • This product is intended for use in the United States and Canada and is built to United States electrical standards.
Use & Care


  • Wipe clean as needed with a damp cloth.

Shipping Information

UPS can deliver most in-stock items within 3–5 business days. UPS is unable to deliver to P.O. boxes.

Shipping Rates

The shipping rate varies depending on your order total and shipping destination. View Shipping Options and Charges.

Next Day Delivery

For an additional charge of $26 per address, we can expedite delivery to most destinations. This service is not available for some oversize items, items shipped directly from the supplier (including perishable and custom-manufactured items), out-of-stock items and items to be shipped outside the contiguous 48 states.

Orders received by 9:00 p.m. ET Monday through Thursday will arrive the next business day; orders placed Friday through Sunday will arrive on the following Tuesday.

Return Policy

At Williams Sonoma, we take great pride in the quality and craftsmanship of our products. Attention to design, materials, safety and construction are our priority. Upon receipt, please inspect your purchase and notify us of any damage; we will arrange for a prompt replacement.

If within 30 days, you are dissatisfied for any reason, you may return your purchase for a refund of the merchandise value. An original receipt or gift receipt is required for all returns and exchanges. Returns with a gift receipt will be refunded in the form of a Merchandise Credit for the amount indicated on the gift receipt. Returns with original receipt will be refunded in the original form of payment, cash and check refunds over $100 will be issued as a company check (may take 14 business days from time of request).

For all cutlery returns (knife sets, single knives, cutting boards, knife sharpeners and knife storage), please contact us at 888.922.4108 to initiate the return.

We cannot accept returns on monogrammed, personalized, special-order items, custom upholstery, food, items shipped direct from the vendor or on items damaged through normal wear and tear. Final sale items ending in .97 or .99 cannot be returned.

Made to Order and Final Sale Furniture items are non-returnable and cannot be cancelled once the order is placed.

For returns of items purchased from your Williams Sonoma Gift Registry, we will gladly provide a refund or exchange for the merchandise within 90 days of your event or within 90 days of purchase, whichever date is later. View Full Returns Policy.

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  • Rated 1 out of 5 by from Disappointment I bought this from Williams Sonoma online and it was delivered 12-18-2017. I used it only a few times and now it won't work, started to glitch 1-5-2018. I get E1 error code that indicates that the vacuum seal on the lid isn't good enough to vacuum seal my food. Before buying I did my homework and read the reviews and saw that this was one of the common glitches in the Polyscience 300 but didn't think it would happen to me. In spite of its size, weight, etc. I really like the machine, when it works it's GREAT but when it's glitching it's very frustrating. That being said, I'm trying to get it exchanged through the local Williams Sonoma store not refunded and hopefully won't have to pack and send it back and wait for another machine. My next review will be about the after sale service which I hope will be good as I'm a long time WS customer!
    Date published: 2018-01-06
    Rated 5 out of 5 by from Fantastic machine! I was wavering between the Vacmaster and this and finally decided on this one. I use it all the time - works like a champ and even though others have complained about its size, it's about the same size or smaller of other similar units. Plus, I like the way it looks so actually leave it on my counter. I also appreciate the oil-less piston. A buddy of mine got the Vacmaster and had to already replace the oil after 3 months. This machine works great and has made my sous vide life so much easier!
    Date published: 2016-12-28
    Rated 4 out of 5 by from A monster in size and weight I took away one star for the enormous size 14x16.5" and weight 60.8 lbs of this machine. Still trying to find a place to store it as it's way too heavy to lift. The bags that come with it are a tad too wide, so be careful to get wrinkles out before sealing. Sealing liquids in a bag is tricky and takes some practice, but cleaning up the mess from it is easy. It's loud, as well. There's definitely a learning curve to find the right vacuum settings for each item to be sealed. It is, however, the best vacuum sealer I've owned.
    Date published: 2016-03-23
    Rated 5 out of 5 by from Commercial grade vacuum that's great for home use. I searched and compared chamber vacuum sealers for quite a while before settling on this one. This unit is a chamber vacuum, which sucks the air out of the chamber, then seals the bag, then returns the chamber to pressure. It's a stronger vacuum, and there's no risk of losing marinade or liquid. You can even (and I have tried) vacuum seal a bag of water with no air in it. Try that with a regular sealer! As for my decision to choose this machine over others, it's very easy to use. It's simple and intuitive to change the settings before each seal, rather than watching a gauge and a timer. Play with it a few times when you first get it, then you'll see how easy it is to use. Also, it's a little more refined looking, so if you need or want to leave it out in your kitchen, you can - without looking like it belongs in the garage.
    Date published: 2016-02-16
    Rated 5 out of 5 by from Great machine I really like the preprogrammed buttons - one is maximum seal, the second is medium and the third is for infusions and marinades (doesn't seal, just cycles through vacuum and release). Not sure why there aren't as many reviews for this machine as there are for the VacMaster, maybe the slightly higher price point... I opted for this machine over the VacMaster because of the preprogrammed settings and the slightly lower weight. I use it much more often than I expected - both for sous vide (I have the Polyscience Chef Series circulating stick) and sealing cheese, etc. for refrigeration.
    Date published: 2015-10-11
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  • For the Chamber vacuum I limited to using the bags or can I make custom sizes using the "plastic roll" that Polyscience sells?

    Asked by: CJAth
    Hi CJAth, Yes, you can make a heat-seal bag from a roll.
    Answered by: Williams Sonoma
    Date published: 2019-11-23
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