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Although tough, Pyrex can still chip, especially at points like the protruding handle edges on some bowls and covers. Once clean, there isn't much to maintaining Pyrex beyond careful handling and storage. A common wooden toothpick is often just the ticket, as are bamboo skewers. Grooves and crevices common on Pyrex ware present a bit of a challenge, as residue within them tends to defy scouring or scrubbing. With any cleaning products, pieces should be washed with a liquid dish soap, preferably Dawn, and water to remove residue before further usage. Both products can also be considered for freshening up tarnished metal cradles, with varying results. Users of either Nevr-Dull or Peek may want to approach decorative patterns, particularly gold leaf, with care or avoid them altogether with these products. It is also helpful in removing adhesive residue left by some types of clear packing tape sellers often use to secure lids to dishes.Īlso effective on metal marks is Peek metal polish, supplied in paste form. It is supplied as a cotton wadding impregnated with the cleaning agent. Actually a petroleum distillate-based metal polish, it appears to remove such marks with little effort and no apparent damage to base color finishes. BKF applied with a wet paper towel and a light touch is often all that's required to remove typical oven rack marks.įor removing some tougher metal transfer marks, a product called Nevr-Dull has been shown to be effective. Both may also be used with discretion on colored but undecorated surfaces, but at the user's own risk. Clean Magic Eraser pads may be effective. Decoratively patterned areas are best avoided, and gold leaf decoration should definitely be avoided with any abrasive or chemical.įor tougher baked on residue, again on unpainted or undecorated surfaces, mild abrasives like Bar Keeper's Friend or Mr. Resist the urge to scrape your Pyrex with metal utensils, and never on colored or decorated areas. Harsh products may be a risk, however, on patterns and color finishes. Household products advertised to accelerate this task are normally fine on bare glass Pyrex interiors.
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Refrigerator stored pieces, however, may be placed directly in an oven because the entire piece will be exposed simultaneously to the same heat and its temperature will change evenly.įor recently baked on residue, soaking the piece in hot tap water is often sufficient. Be aware that the result of thermal shock can be sudden, explosive, and potentially injurious. Literature included with Pyrex even warned against handling with or placing on a wet cloth. It is for the same reason Pyrex ovenware should not be used over a stovetop burner or under a broiler. As heat resistant as Pyrex is, it is vulnerable to thermal shock when a portion of the piece cools more rapidly than the rest. Always allow an oven hot piece to cool on its own to room temperature before immersing in even hot dishwater. If you want to clean up a Pyrex piece you've found and added to your collection, or need to clean one you use, it is imperative that you exercise caution and care in order not to damage either the piece or its finish.ĭuring use, never subject hot Pyrex to cold or much cooler temperatures, such as by pouring water in a hot bowl or pan.