MicroTips - Perfect for CCIT



WPI pre-pulled pipettes (MicroTips) are a popular choice for pharmaceutical companies carrying out CCIT (Closed Container Integrity Testing). Each MicroTip 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 sterile 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 when inserting into cells. 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: 1.0 mm thin wall
  • MicroTips with an ID smaller than 1 µm have a filament
  • 10 Micropipettes per package

Certificate of Compliance

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


Models Available

Order code Tip ID Shank Length Glass OD Filament Fire Polish
TIP01TW1F-L 0.1µm -- 1.0mm Thin wall Yes --
TIP02TW1F-L 0.2 µm -- 1.0mm Thin wall Yes --
TIP05TW1F-L 0.5 µm -- 1.0mm Thin wall Yes --
TIP1TW1-L 1 µm -- 1.0mm Thin wall No --
TIP2TW1-L 2 µm -- 1.0mm Thin wall No  --
TIP5TW1-L 5 µm -- 1.0mm Thin wall No --
TIP10TW1-L 10 µm -- 1.0mm Thin wall No --
TIP30TW1-L 30 µm    -- 1.0mm Thin wall No --


Shop for Pre-Pulled Glass Capillaries



Type Description  
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 viscosity 1013 dPa·s
107.6 dPa·s
104 dPa·s
560 ± 10°C
820 ± 10°C
1260 ± 20°C
Heat conductivity λ 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 δ
at 1 MHz
and 25 °C
4.6 10-4
37 10-4
Tk 100 (DIN 52326)   250°C
Classes of chemical stability water
alkaline solution
DIN 12 116