But just as I was about to place my ice-cold pie plate on the burning-hot sheet pan, I had a serious moment of pause. Disclaimer: Cole-Parmer products are not approved or intended for, and should not be used for medical, clinical, surgical or other patient-oriented applications. on A quick guide to Classifications of Laboratory Glassware. Handling your glassware without an appropriate degree of care could result in breakage, chipping, cracking or severe scratching. on An overhead stirrer with reversible action, A quick guide to Classifications of Laboratory…, What is the difference between the readability…, What vials and sample cells are compatible…, An overhead stirrer with reversible action, VAT exemption on PPE for charities is a confusing matter. Sign up to receive the latest in industry news, products, & services. Exposure to Chemicals As with all Pyrex brand borosilicate glass labware, the PyrexPlus vessel has excellent chemical inertness. Avoid sudden temperature changes to glassware. Custom Masterflex Single-Use BioProcess Assemblies, Masterflex Single-Use Systems and Assemblies, The Use and Care of PyrexPlus® Laboratory Glassware. Pipets Place pipets, tips down, in a cylinder or tall jar of water immediately after use. Usage Instructions Especially if you plan to dish up your dinner with a metal spoon. Remember that heating and cooling should always be slow and steady – Pyrex can withstand huge temperature changes, but if they are too sudden it may still crack due to thermal shock. If using a chromic acid cleaning solution minimize contact of the solution with the coating. Be careful when handling broken glass because pieces may be extremely sharp and difficult to locate. 0000007281 00000 n 0000103538 00000 n Sterilizing time should not exceed 15 minutes. hazardous chemical below room temperature. The odor is normal and will not affect the inertness of the inside borosilicate glass surface. Extremely low temperatures may result in the coating becoming cracked. Polyethylene baskets and jars may be sued for soaking and rinsing pipets in chromic acid cleaning solution. Pyrex ® - One of the most famous names in science. Do not autoclave above 121°C (250°F). 0000001895 00000 n The practical upper limit for operating temperatures Is much lower and is con-trolled by the temperature ditterentials in the glass, which depend on the relative temperatures of the contents of the equipment and the external surroundings. 0000086249 00000 n Avoid brushes and cleaning pads which could abrade the glass or damage the coating. The actual cavity temperature of the autoclave should be checked to be sure the autoclave temperature does not exceed the recommended sterilization and drying temperature. Cole-Parmer products are not approved or intended for, and should not be used for medical, clinical, surgical or other patient-oriented applications. Automatic Pipet Washers Where a large number of pipets are used daily, it is convenient to use an automatic pipet washer. 0000001505 00000 n Be certain that the water level is high enough to immerse the greater portion or all of each pipet. Proper care and handling of PyrexPlus labware or any labware will greatly increase its life and increase the safety of your work place. Please turn it on so that you can experience the full capabilities of this site. All rights reserved. Burets should always be covered when not in use. A brown appearance or hardness to the touch are signs that the coating has become brittle. 0000005000 00000 n This product is intended for normal household use only; it is not intended for camping, industrial or commercial use. <<7FA528DFC96F524F9C34039CFAF5CAD3>]/Prev 144182>> Slides and Cover Glass It is especially important that microscope slides and cover glass used for the preparation of blood films or bacteriologic smears be perfectly clean and free from scratches. (The all-caps emphasis is theirs.). Others, such as those made with polyethlyene, can be attached to the water supplies by rubber hose. Exposure to Heat PyrexPlus labware is designed to withstand the temperatures associated with steam sterilization. Slides should be washed, placed in glacial acetic acid for 10 minutes, rinsed with distilled water, and wiped dry with clean paper towels or cloth. Do not drop them into the jar. The best method for sterilizing culture tubes is by autoclaving for 30 minutes at 121°C (15 psi pressure). Pyrex® Glassware can be used for cooking, baking, warming and reheating food in microwave ovens and preheated conventional or convection ovens. Apparently this is a problem that Pyrex had to address? This includes cooking on the stovetop (unless the glass dish is specifically designed for that purpose, in which case follow the manufacturer's instructions), grilling, broiling, and cooking in a toaster oven. Any non-abrasive glassware detergent may be used for hand or automatic dishwasher cleaning. Wrap serologic and bacteriologic pipets in paper or place in pipet cans and sterilize in the dry air sterilizer. The coating, however, is designed to resist leakage resulting from a brief chemical exposure that might occur if the vessel is broken. © 2020 Cole-Parmer Instrument Company, LLC. Not only is Pyrex heat resistant, it also has high levels of chemical resistance to acids and alkalis, making it a versatile choice for your lab. Ad Choices, How to Make Sure Your Pyrex Doesn't Shatter. The recommended temperature use range for PyrexPlus labware is 10°C to 80°C. Use water-based markers for temporary marking or labeling of the PyrexPlus labware coating. Use of this site constitutes acceptance of our User Agreement (updated 1/1/20) and Privacy Policy and Cookie Statement (updated 1/1/20) and Your California Privacy Rights. Corning provides a range of equipment and disposable and reusable laboratory supplies for compliance testing including a full range of PYREX® glassware—the leading brand of laboratory glassware … 0000103955 00000 n After soaking for several hours, or overnight, drain the pipets and run tap water over and through them until all traces of dirt are removed. Solvent-based markers, dyes and stains cannot be removed from the coating. The second, from Rhoda Boone, suggests preheating a sheet pan in the oven, then setting your pie plate directly on top of the hot sheet pan as it bakes. Pyrex glassware—made for both purpose and passion—has been passed down from generation to generation, and for good reason. xref Do not blow into the pipets as this will cause moisture to condense on the inside of the pipet. Acids, alkali, and detergents in small amounts interfere with serologic reactions. Some particles may require loosening with a horse hare or piece of fine wire. use a vessel on which the coating is hardened, darkened or otherwise damaged. I was using a glass Pyrex dish, and something in my brain told me that if I placed it onto the scalding metal, it would shatter—and send my precious pie into the air. Rinse with tap water until all the dirt is removed. Both media and tubes are thus sterilized with one autoclaving. To revisit this article, visit My Profile, then View saved stories. 0000063091 00000 n 0000111250 00000 n 23 0 obj <> endobj Pyrex is borosilicate glass which makes it highly temperature resistant. The heat of the lantern flame conspired with the cold air of winter to shatter traditional glass lanterns. Place in proper disposal containers. Again, the sudden change in temperature could cause breakage. However, as with any microwave vessel, be sure there is a load (water or other microwave absorbing material) in the microwave oven. The pipets may then be drained and placed in a cylinder or jar of dissolved detergent or, if exceptionally dirty, in a jar of chromic acid cleaning solution. on What is the difference between the readability and accuracy of a balance? If the slides are dry stored, wash them with alcohol before use. Serologic tubes and glassware should be kept separate from all other glassware and used only for serologic procedures. As is common practice, clean all glassware before use. All Rights Reserved. 0000086431 00000 n It is best to fill the pipet with the cleaning solution and allow to stand overnight. As with all glass products, you must exercise an appropriate degree of care, especially when cooking food at high temperatures. Do not remove the protective coating. Some of these, made of metal, can be connected directly by permanent fixtures to the hot and old water supplies. If the tubes are to be filled with sterile media, plug and sterilize the tubes in the autoclave or dry air sterilizer before adding the media. Wash the stopcock or rubber tip separately. This makes it an ideal choice for lab glassware which will be directly heated. It may be expedient to sterilize all tubes. To remove particles of coagulated blood or dirt, a cleaning solution should be used. Back then, you could safely take a dish from one temperature extreme to another—refrigerator to freezer to oven—without having to worry about glassware shattering from the change in temperature. If the recipe calls for baking a food item at 400 degrees, Pyrex glass cookware is safe to use in an oven preheated to that temperature. Use only a small amount of lubricant. It is imperative when washing serological glassware that all acids, alkali, and detergents be completely removed. Sampling Virus in Air Webinar - Thursday, Nov 19th. Soak the pipets in distilled water for at least one hour. As with all glass products, you must exercise an appropriate degree of care, especially when cooking food at high temperatures. The upper temperature limit for PyrexPlus labware is 110°C (230°F). 0000007415 00000 n Cleaning Specific Types of Pyrex Glassware. Please enable Javascript and refresh the page to continue Plastic lids are for microwave and storage use only, and are BPA free. 0000038969 00000 n 0000003315 00000 n 0000102995 00000 n Instead, set the dish on a silicone or cloth hot pad, or on an impeccably dry dish towel draped over a wooden cutting board. Autoclaving—Cloudiness: Should the coating appear clouded due to dissolved moisture, simply let dry overnight at room temperature or briefly heat to 110°C (230°F). Burets Remove the stopcock or rubber tip and wash the buret with detergent and water. This makes it an ideal choice for lab glassware which will be directly heated. However, in keeping with safe laboratory practice, always use a safety shield around evacuated containers. 0000002409 00000 n Beakers, test tubes and flasks that are made from Pyrex glass are suitable for direct heating by hotplate, heating mantle or bunsen burner. Or, as the Pyrex website puts it: "Add a small amount of liquid sufficient to cover the bottom of the dish prior to cooking foods that may release liquid." of the coating to strong acids or solvents. The material on this site may not be reproduced, distributed, transmitted, cached or otherwise used, except with the prior written permission of Condé Nast. I started using Pyrex glassware before 1998, so I consider the products to be almost miraculously heat-resistant. 0000001333 00000 n Media which solidifies on cooling should be poured out while the tubes are hot. Pyrex is borosilicate glass which makes it highly temperature resistant. Find out more about Pyrex laboratory glassware by following the links above, or ask us below if you have any questions; Enter you email below to receive blog updates: What are the temperature limits for Pyrex glassware? 0000000016 00000 n Serological Tubes Serological tubes should be chemically clean, but need not be sterile. Pyrex ® borosilicate glass was originally developed in 1908 by Corning Glass Works for use on the American railroads to overcome a problem with train lanterns requiring a glass that could handle changes in temperature.