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Polyethylene Stopper Caps

Fit test tubes, culture tubes and sample cups for liquid handling

Manufacturer: evergreen scientific  300381202S

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Catalog No. 05-555-20


Description & Specifications


Material Polyethylene
Color Natural
Product Type Two Position Cap
Sterile Yes
For Use With (Equipment) 12mm polystyrene culture tubes
Size (English) 0.47 in.
Size (Metric) 12mm

For test tubes:

  • Precision-molded stopper caps are available for every size (except 15.5 × 50mm) of Evergreen test tube.
  • Choose from either standard caps (like the 300-2900 series) or the flat-top style (300-4700 series).
For culture tubes:
  • Over-fitting caps for use with sterile culture tubes have two positions: loose for aerobic culturing; tight for anaerobic culturing and leak-proof sealing.
  • Caps for culture tubes are gamma-irradiated for sterility.
For sample cups:
  • Perforated caps (Cat. No. 05-551-5) help minimize variation caused by evaporation during processing; non-perforated caps and push-button stoppers are appropriate for short-term storage.(Cat. Nos. 02-544-73A and 05-300-291)
  • See Evergreen Scientific sample cups