Glasslock 18-Piece Container Set
The Glasslock containers have locking covers that will avoid leakages. However these covers likewise put tension on the lips of the containers, so the glass might be vulnerable to cracking with time.
We advise the Glasslock 18-Piece Container Set just if you desire a glass set that’s leakproof. Like a great deal of glass containers we thought about, these have a history of cracking with time (although lots of Wirecutter staffers report no concerns after years of usage). The Glasslock containers’ tight-fitting covers keep food fresher longer. However they likewise put pressure on the edge of the glass, which, according to the glass professionals we talked to, might be triggering tension that leads to damage. (A number of customers likewise pointed out that their containers broke after they embedded them for storage. We were informed by Jane Cook, then primary researcher at the Corning Museum of Glass, that stacking glass can trigger tension with time since the 2 difficult surface areas rub together, and this might ultimately cause cracking. You can stack the containers on top of each other with the covers on rather, or layer a paper towel in between containers.) That stated, compared to other brand names we checked, the Glasslock containers locked more firmly without dripping and didn’t break or pop open when dropped. Per piece, the set likewise costs less than other glass alternatives we thought about.
The plastic covers have a company silicone gasket that fills the cover groove from edge to edge and supplies a tight seal that does not leakage. Though the gaskets are detachable, they’re more difficult to pry off than the thicker rings on the OXO containers– we unintentionally pierced the gasket on among our Glasslock containers with a butter knife. Our testers discovered that the plastic flaps on the covers were harder to close than the press-on covers of the Pyrex glass containers, however that holds true of a lot of locking containers. Nevertheless, the Glasslock containers kept food fresher longer than much of the competitors in our preliminary tests, showing that they’re airtight. In our tests, greens stayed sprightly, and cut strawberries tasted simply a touch off after being cooled for 2 weeks. Tomato sauce didn’t reveal indications of freezer burn, and it didn’t impart discolorations or smells to the glass or to the plastic cover.
Remarkably, the Glasslock set bounced in our drop tests, without any damage to the glass containers. The covers stayed completely undamaged and didn’t pop off. (For kicks, we even attempted dropping a Glasslock container onto cement. It broke on a corner just after 3 other efforts to break the important things.) The glass Snapware set we checked didn’t fare also in our drop tests: A few of the flaps opened, and the corner of the cover broken.
The Glasslock set includes 9 square, rectangle-shaped, and round containers varying from 0.7 cup (165 milliliters) to 6.3 cups (1.5 liters) in size. Though the containers are clear, you can select to get them with clear covers with a sea-green gasket or with clear cornflower-blue covers. This set has a broader variety of shapes than the glass Rubbermaid Luster set. The Glasslock walls are thick however completely transparent, and same-shape containers of various sizes nest even with the covers on. These containers stack magnificently in the refrigerator, making it simple to see what leftovers you have.
Like Pyrex and Anchor Hocking, Glasslock makes its containers out of tempered soda-lime glass that’s oven-, microwave-, freezer-, and dishwasher-safe. Though we like the OXO 16 Piece Smart Seal Glass Container Set (which has a spongier gasket and covers that are much easier to remove and tidy), it’s much more pricey given that the containers are made from borosilicate glass. And we still saw grievances of cracking in the evaluations.
Glasslock will replace any worn-out or faulty lids complimentary of charge (though you’ll need to pay a couple of dollars for shipping). You can buy the right-size cover on its site by trying to find the item code engraved into the bottom of your container. If you purchase your set straight through Glasslock’s site, the business will use a complete refund within thirty days of purchase as long as the containers are unused and in their initial product packaging.
Like all tempered glass wares, the Glasslock containers can spontaneously shatter (albeit really hardly ever) due to surface area damage, producing defects, or severe thermal tensions. Beyond that, numerous pieces we have actually long-lasting checked have actually broken around the edge, and we have actually heard other individuals experience the exact same thing. We have actually likewise checked out evaluations that the containers’ body chips with time. The cracking is most likely due to the pressure that the locking covers placed on the glass when you snap them shut, or from stacking the containers. William LaCourse, a teacher in the Glass Engineering Science department at Alfred University, informed us, “There will be tensions as an outcome of the cap and putting the cap on with relatively high pressure … it basically squeezes the cap onto the glass.” He described that if there are any small defects currently present in the glass, the included pressure from the covers might trigger the containers to chip or break. Cook stated that you can likewise put tension on glass by rubbing it versus a product as difficult or more difficult than itself (which takes place when you stack glass containers on top of each other). That tension is likewise worsened when you stack warm containers that have actually broadened.
If you’re devoted to getting the Glasslock containers since you desire glass containers that do not leakage, we do not believe the issue of cracking or damage needs to stop you. Just a little number of the containers we have actually checked have actually broken. We likewise subjected the Glasslock containers to severe thermal tensions, and they made it through unharmed. And we have actually formerly bought sets from various merchants to look for any damage throughout shipping. Simply watch out each time you open a container: The only thing you do not desire is a piece of glass in your food. And if you’re going to select glass over plastic, remember that all glass wares is naturally fragile and requires to be managed with care.
If you do not have a dishwashing machine, you might require to eliminate the gaskets from the Glasslock covers to clean them and avoid any mold accumulation. (This appears to occur just to sets that individuals hand-wash.) Thoroughly dig the gasket out with a butter knife so you do not knick it, clean it with warm water, and let it dry entirely prior to you reassemble the cover.
Some Amazon customers have actually grumbled that the flaps on the covers of the Glasslock containers make a racket when snapped shut. However we do not believe this is a dealbreaker since it’s simply a flash of sound; other containers, like the Rubbermaid Luster, were louder.
Long-lasting test notes
Marilyn Ong, monitoring editor on our kitchen area group, has actually owned Glasslock containers for approximately 5 years, and she utilizes them often to save leftovers for her household of 5. She hasn’t experienced any glass cracking, though the flaps on the covers for her round containers did begin to break off after about 4 years. She bought brand-new covers totally free from the Glasslock website, paid a couple of dollars for shipping, and got them less than a week later on.