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Clear Weld Heat Seal Mark 2

Optically clear heat sealing film, non-peelable, difficult to pierce; suitable for qPCR, optical applications and storage. This is a 4titude from Brooks Life Sciences product – for more information on Brooks Life Sciences visit: www.brookslifesciences.com/

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  • Heat sealing offers a 100% effective method for plate sealing for a complete seal integrity, as well as being quick and cost effective

  • Our Clear Weld Heat Seal Mark 2 is an optically clear polymer film forming a permanent seal to polypropylene plates

  • The optical clarity of this seal enables its use for sealing plates required for imaging use, including fluorescent detection methods such as qPCR and colorimetric assays

  • The Clear Weld Heat Seal Mark 2 forms a complete seal to a plate, enabling both low and very high temperature uses, including low temperature storage and high temperature incubations

  • This seal is suitable for PCR/qPCR, even without the use of a pressurized heated lid, and is 100% effective when used in water bath thermal cyclers

  • The permanent nature of this 100% effective seal renders it suitable for the storage and disposal of hazardous material

  • Clear Weld Heat Seal Mark 2 demonstrates a good solvent resistance and can be utilized for long term compound storage

  • Samples can be accessed by pre-piercing with a blade, needle or our Pierce Plate (4ti-0398)

  • This seal is available as sheets, for use with manual and semi-automated sealers, such as our 4s3™ Semi-Automatic Sheet Heat Sealer

  • Also available in multiple roll formats compatible with specified automated heat sealers, such as our a4S Automatic Roll Heat Sealer

This is a 4titude from Brooks Life Sciences product – for more information on Brooks Life Sciences visit: www.brookslifesciences.com/

Key Features

  • Permanent seal
  • Difficult to pierce
  • Non-peelable
  • Seal integrity range: -80 °C to 110 °C
  • DMSO and solvent resistant
  • Autoclavable (121 °C)*
  • Free from DNase, RNase, human genomic DNA, and endotoxin/pyrogen


  • Applications: suitable for PCR and qPCR, long term storage, and disposal of hazardous materials
  • Seals polypropylene plates
  • Compatible with water bath thermal cyclers


  • Sheet format: 125 x 78 mm, to fit all standard SBS footprint PCR and qPCR plates, microplates, assay and storage plates, from 12 well to 1536 well
  • Roll format: available in a variety of roll dimensions, to suit your choice of automatic heat sealing equipment
  • Non-sterile as standard; sterilization available upon request
  • Also available with our FrameSeal™ technology, a disposable, rigid, plastic frame perfect for use with a robotic gripper to be used within an automation cell

* Once autoclaved, not recommended for PCR applications.

Related Documents

Links below redirect to the Brooks Life Sciences website

Part Number



roll (610 m x 78 mm, approx. 5,000 seals); 1 roll


sheets (125 x 78 mm); 100 sheets





*Seals are inter-leaved with paper sheets. This helps to denote which side is the sealing side, plus aids removal of one sheet at a time from the pack.