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Researcher, Electrothermal

WPI offer a wide range of products designed for those working in the life science industry but just as importantly they offer great customer support and possess great product knowledge.
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Pre-Pulled Glass Capillaries Used For CCIT (Closed Container Integrity Testing)

Pre-Pulled Glass Capillaries Used For CCIT (Closed Container Integrity Testing)

WPI pre-pulled pipettes are a popular choice for pharma companies carrying out CCIT (Closed Container Integrity Testing) as each one is individually tested and inspected and can be shipped with a certificate of compliance.


CCIT is an important part in understanding the biological safety and suitability of primary packaging. It is used to assess the potential of the container closure system to maintain a seterile barrier or to prevent leakage resulting in contamination or loss of the drug. A good overview of Understanding Container Closure Integrity Testing can be found on the American Pharmaceutical Review site

WPI can quickly supply your need for consistently sized, pre-pulled, glass, calibrated micropipettes. Tip diameters (ID) range from 0.1 to 10 µm. Silanized Tips (Luer Shank) are available. Silanization waterproofs the glass to retard water when inserting into cell. This will not let the outside fluid run down the glass pipettes and get inside so easily.These glass needles are fabricated from Schott Duran borosilicate glass. 

  • Every glass pipette individually tested and inspected
  • Schott Duran borosilicate glass pipettes
  • 0.5 µm and smaller ID micropipettes include internal glass fiber for easy filling
  • Tip inner diameter tolerance ±20%
  • Short taper yields high strength
  • Nominal length ≈ 50 mm
  • OD:ID = 1.33:1
  • Vacuum packed
  • Luer fitting
  • Glass Outside Diameter: 1.0mm thin wall
  • MicroTips with an ID smaller than 1µm have a filament
  • 10 per package


Certificate of Compliance

A Certificate of Compliance is available for these MicroTips. Please request one when placing your order.


Models Available

With Luer Connector

Order codeTip IDGlass ODFilamentFire Polish
TIP01TW1F-L0.1µm1.0mm Thin wallYes--
TIP02TW1F-L0.2 µm1.0mm Thin wallYes--
TIP05TW1F-L0.5 µm1.0mm Thin wallYes--
TIP1TW1-L1 µm1.0mm Thin wallNo--
TIP2TW1-L2 µm1.0mm Thin wallNo --
TIP5TW1-L5 µm1.0mm Thin wallNo--
TIP10TW1-L10 µm1.0mm Thin wallNo--
TIP30TW1-L30 µm   1.0mm Thin wallNo--


Without Luer connector

Order codeTip IDGlass ODFilamentFire Polish
TIP01TW1F0.1µm1.0mm Thin wallYesNo
TIP02TW1F0.2 µm1.0mm Thin wallYesNo 
TIP03TW1F0.3 µm1.0mm Thin wallYes No
TIP04TW1F0.4 µm1.0mm Thin wall YesNo
TIP05TW1F0.5 µm1.0mm Thin wallYesNo
TIP1TW11 µm1.0mm Thin wallNoYes
TIP2TW12 µm1.0mm Thin wallNo Yes
TIP5TW15 µm1.0mm Thin wallNoYes
TIP10TW110 µm1.0mm Thin wallNoYes
TIP20TW120 µm1.0mm Thin wallNoYes
TIP30TW130 µm1.0mm Thin wallNoYes


Other options

Shop for Pre-Pulled Glass Capillaries

CTE (20 °C; 300 °C) 3.3± 0.110-6/K
Transformation temperature Tg 525 ± 15 °C
Density 2.23 ± 0.02 g/cm3
Temperature at the viscosity1013 dPa·s
107.6 dPa·s
104 dPa·s
560 ± 10°C
820 ± 10°C
1260 ± 20°C
Heat conductivity l at 100 °C
Specific heat CP
0.8J / (g·K)
Poisson-ratio μ
Refractive index nd
 4.0·10-6 mm² / N
1.473mm² / N
Relative dielectric constant
tan d
at 1 MHz
and 25 °C
4.6 10-4
37 10-4
Tk 100 (DIN 52326) 250°C
Classes of chemical stabilitywater
alkaline solution
DIN 12 116

Our Clients Include:

University College London
Imperial College
University of Cambridge
University of Oxford

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