Circle Writer - Bold 5.0mm - Transparent

WHITE LABEL
Reliable liquid blocker for precise staining – made in Japan.The Circle Writer [PAP PEN] is a high-performance barrier pen designed to draw hydrophobic circles on glass slides, helping contain reagents during immunostaining and other lab procedures. Manufactured in Japan and trusted globally for over 20 years, this pen delivers consistent performance in research, pathology, and clinical laboratories.Its fast-drying, high-viscosity ink creates a durable barrier that resists common solvents like alcohol and acetone, making it ideal for use with PBS solutions in the PAP method (peroxidase–antiperoxidase). The barrier remains stable during incubation, preventing reagent spread and improving stain precision. • Bold (5.0mm) • Transparent • Easily removable with xylene after use • Compact, easy to handle, and mess-freeWhether you’re working in a hospital, university, or diagnostic lab, the Barrier Pen+ delivers clean, controlled results on every slide.

In stock

SKU S03695
  £50.11

    Reliable liquid blocker for precise staining – made in Japan.

    The Circle Writer [PAP PEN] is a high-performance barrier pen designed to draw hydrophobic circles on glass slides, helping contain reagents during immunostaining and other lab procedures. Manufactured in Japan and trusted globally for over 20 years, this pen delivers consistent performance in research, pathology, and clinical laboratories.

    Its fast-drying, high-viscosity ink creates a durable barrier that resists common solvents like alcohol and acetone, making it ideal for use with PBS solutions in the PAP method (peroxidase–antiperoxidase). The barrier remains stable during incubation, preventing reagent spread and improving stain precision.
    • Bold (5.0mm)
    • Transparent
    • Easily removable with xylene after use
    • Compact, easy to handle, and mess-free

    Whether you’re working in a hospital, university, or diagnostic lab, the Barrier Pen+ delivers clean, controlled results on every slide.

    SKU S03695
    Manufacturer White Label