Volumetric Flask, Class A, Light-Shielding, NS Stopper 250 mL

SKU:
674950

    • Description

    Tinted volumetric flasks of polymethylpentene (PMP) offer superior opacity to ultraviolet light, as well as much of the visible spectrum, compared with amber glass. They are also light weight and offer superior break resistance. An excellent choice for measurement of light-sensitive materials.

    Flasks are available in sizes from 10mL to 1000mL and are supplied with tinted PP screw caps. They offer accuracy to Class A standards per DIN EN ISO 1042, even after autoclaving at temperatures up to 121°C (to preserve markings, cleaning at no higher than 60°C is recommended). Flasks may also be sterilized with formalin or ethanol, or by β-radiation, and are microwavable. Excellent resistance to acids, alkalis and alcohols at room temperature, and good-to-limited (short term exposure) resistance to aliphatic hydrocarbons, aldehydes, ketones and esters. They are not suitable for use with aromatic or halogenated hydrocarbons, ethers, oxidizing acids or oxidizing reagents.

    Each flask is individually calibrated “to-contain” (‘In’) at a reference temperature of 20°C, individually ring-marked, for accuracy, imprinted with a lot-number, and shipped with a lot certificate. The high contrast ring-mark ensures an accurate reading of the meniscus.

    Class A Volumetric Flask, PMP, with Screw Cap, PP, Certified

      Volume
       mL
    Tolerance
    ±mL
    Height
    mm
    Thread
    GL
    Qty/Pack
    Cat. No.
      10
    0.04
    90
    18
    2
    V670040
      25
    0.04
    115
    18
    2
    V671040
      50
    0.06
    150
    18
    2
    V672040
      100
    0.10
    180
    18
    2
    V673040
      250
    0.15
    235
    25
    2
    V674040
      500
    0.25
    270
    25
    2
    V675040
      1000
    0.40
    310
    32
    1
    V676040

     

     

    Class A Volumetric Flask, PMP, with NS Stopper, PP, Certified

      Volume
       mL
    Tolerance
    ±mL
    Height
    mm
    Stopper
    NS
    Qty/Pack
    Cat. No.
      10
    0.04
    90
    10/19
    2
    V670950
      25
    0.04
    115
    10/19
    2
    V671950
      50
    0.06
    150
    12/21
    2
    V672950
      100
    0.10
    180
    14/23
    2
    V673950
      250
    0.15
    235
    19/26
    2
    V674950
      500
    0.25
    270
    19/26
    2
    V675950
      1000
    0.40
    310
    24/29
    1
    V676950