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    What People Are Saying

    nice product
  • Brianna
  • 06/25/2016
  • I recently broke one of my flasks so I am so glad to have this one. great product
    Excellent, worth the extra cost
  • Nancy
  • 02/24/2016
  • I teach a homeschool chemistry class. We use beakers and erlenmeyer flasks over alcohol burners several times during the year. The plain borosilicate ones will definitely survive a homeschool family's use, but the Pyrex ones are what you need to get if you're planning on repeatedly heating things over several years. I have had the borosilicate flasks crack (not dangerous, but not reusable after cracking) after a few years of use. I really appreciate HST's services. It's wonderful to be able to purchase smaller quantities of what I need to run science experiments. Plus, they are always honest in their materials. If they say it's Pyrex, it's Pyrex.
    Good quality
  • shani
  • 01/14/2016
  • My kids are enjoying this addition to their chemistry set. It is a nice good quality glass flask.

    reward points

    PYREX Erlenmeyer Flask, 250 ml

    Ages 8+

    Item# CE-FLAS250

    $6.40 in_stock

    In Stock

    Order now to ship Monday, 07/31. Express shipping is available.
    Product Overview
    This 250 ml PYREX narrow mouth Erlenmeyer flask with a heavy duty rim is made from low expansion, Type 1, Class A borosilicate glass that can be heated directly in an open flame. PYREX Erlenmeyer flasks are made to ASTM E14040 specifications for general laboratory use such as mixing, heating, and cooling.

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    QUANTITY 1 - 11 12+
    PRICE $6.40 $6.10
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    • Product Details

      PYREX Erlenmeyer Flask, 250 ml

      This 250 ml PYREX® narrow mouth Erlenmeyer flask with a heavy duty rim is made from low expansion, Type 1, Class A borosilicate glass that can be heated directly in an open flame. PYREX® Erlenmeyer flasks are made to ASTM E14040 specifications for general laboratory use such as mixing, heating, and cooling. The graduations are approximate and not intended for accurate liquid measurement. The Pyrex® brand is known for consistent high quality and their Erlenmeyer flasks are used in professional laboratories throughout the world. Use a #6.5 stopper for this glass flask.

      Order Home Science Tools flasks for comparable functionality at a lower price.

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