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Burettes Schellbach-PTFE key stopcock, capacity 100ml, Sub. Div. 0.20ml Tolerance ± 0.20ml, class 'B' - eiscoindustrial

Burettes Schellbach-PTFE key stopcock, capacity 100ml, Sub. Div. 0.20ml Tolerance ± 0.20ml, class 'B'

SKU CH0241O

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  • Description
  • 3.3 Boro Glass Specs
  • Glassware Sell Sheet
  • 100 ml Borosilicate ASTM burette
  • PTFE stopcock
  • Single straight bore
  • Schellbach style, Includes vertical white stripe and center blue ribbon for easy measuring of clear liquids
  • Class B
  • 0.20 ml blue ceramic graduations
  • Tolerance ±0.20 ml
  • Made from high quality 3.3 borosilicate glass
  • 32" height
  • Superior chemical durability*
  • Complies with DIN 12700, ISO 385 and ASTM E1272
*See specifications tab for temperature and chemical durability information

    Thermal Properties

    Property Value
    Coefficient of Linear Expansion 32.5 x 10-7 / °C
    Strain Point 515°C
    Annealing Point 565°C
    Softening Point 820°C
    Specific Heat 0.2
    Thermal Conductivity (Cal/cm³°C/Sec) 0.0027

    Chemical Durability

    Contact Chemical Duration (hours) Loss in weight (mg/m²)
    Water distilled at 100°C 6 10
    Water vapour steam at 121°C 1 75
    Acid HCl 6 100
    80% H2SO4 at 130°C 12 140
    Alkali -1N solution of Na2CO3 boiling 6 4000
    Isotonic infusion Fluids - NaCl (0.85%) at 121°C 2.5 70
    Isotonic infusion Fluids - Glucose (5%) at 121°C 2.5 50
    Download Glassware Sell Sheet