- Can you boil water in an Erlenmeyer flask?
- How does a thermos flask function as a heat preserver?
- What does Pyrex or kimax mean?
- What is borosilicate glass made of?
- Can you heat a volumetric flask?
- How do you heat a flask?
- Can kimax be heated?
- Why should a hot solution never be poured into a volumetric flask?
- Can you put milk in a thermos?
- Can you put an Erlenmeyer flask on the stove?
- How do you sterilize an Erlenmeyer flask?
- Why use an Erlenmeyer flask instead of a beaker?
- Can test tubes be heated?
- Why does my flask not stay hot?
Can you boil water in an Erlenmeyer flask?
So, although Erlenmeyer flasks can be heated, they are not specifically designed for high temperature, constant heating applications.
For this, you should use a boiling flask.
Since most Erlenmeyer flasks are made with Pyrex glass, there should be no problem heating them up..
How does a thermos flask function as a heat preserver?
A thermos flask has double walls, which are evacuated and the vacuum bottle is silvered on the inside. The vacuum between the two walls prevents heat being transferred from the inside to the outside by conduction and convection.
What does Pyrex or kimax mean?
(Chemistry) any of a range of heat- and chemical-resistant glasses, such as Pyrex, prepared by fusing together boron(III) oxide, silicon dioxide, and, usually, a metal oxide.
What is borosilicate glass made of?
Borosilicate glass is created by combining and melting boric oxide, silica sand, soda ash, and alumina. Since borosilicate glass melts at a higher temperature than ordinary silicate glass, some new techniques were required for industrial production.
Can you heat a volumetric flask?
If you must dry the inside of a flask, warm it gently over a Bunsen burner. Do not heat volumetric glassware (it will break if you do). Usually you can get around the problem of wet volumetric glassware by rinsing it with 4 or 5 small aliquots of the solution to be measured so the solution replaces the water.
How do you heat a flask?
To keep your thermos warm and your hot lunch hot carefully fill your thermos with boiling water, attach the lid and let sit for 5-7 minutes or longer. Drain the water, quickly wipe dry (unless you’re putting a liquid in the thermos) and immediately place hot food into the thermos.
Can kimax be heated?
You can rest assured that if you see Pyrex® or Kimax® on beakers, flasks, funnels, graduated cylinders, culture and centrifuge tubes they are heat resistant and safe. Anytime you see borosilicate glass on any other of our glass products, they, too, are safe for high heat applications.
Why should a hot solution never be poured into a volumetric flask?
Why should you never heat a volumetric flask, or add a hot solution to a volumetric flask? Because it can be broken. Unlike round bottom flask, volumetric flask has local heating due to the tension in the glass.
Can you put milk in a thermos?
A thermos can only keep food hot or cold if it has some sauce or liquid. Use a thermos to pack beverages that need to be kept hot like coffee or tea or cold like milk or 100% juice.
Can you put an Erlenmeyer flask on the stove?
A flask should be fine directly on a gas stove or a ceramic top.
How do you sterilize an Erlenmeyer flask?
protocol. Allow the flasks and content to cool to 55oC or lower before securing the cap. Tightening caps on hot flasks will lead to distortion of the flask as the contents cool down. The recommended sterilization temperature is 121°C at 15 psig, up to 60 minutes.
Why use an Erlenmeyer flask instead of a beaker?
Swirling in a conical flask makes the solution run back down, rather than slosh over the edge, so there is less chance of spilling. With a beaker it is more likely that some part of your sample will slosh out.
Can test tubes be heated?
Test tubes are one of the few types of glassware intended to be heated via direct flame. This is partly due to their shape and their small size. However, it is still possible to shatter them with incautious heating. Do not put the test tube directly into the flame.
Why does my flask not stay hot?
Thermos flasks work in two main ways. They insulate by using a vaccum between a double-walled glass vessel and the walls of this vessel also reflect heat as they are silvered. If your flask isn’t visibly damaged (look underneath the plastic cover) then a small crack or defect may have caused the vacuum to fail.