PAP GnomePen Classic Liquid Blocker

PRODUCTS:               

APPLICATION:

Newcomer Supply PAP GnomePen^™ Liquid Blocker available in both “classic” thin tip and “flat” wider tip, creates a visible hydrophobic film around tissue sections to reduce reagent volume needed for tissue coverage and stain reaction. Both classic and flat PAP GnomePen^™are available in multiple barrier colors for color coding and specimen differentiation. Each pen contains 250-350 applications in a transparent container providing a visual estimate of remaining solution. GnomePen^™ contains a unique formulation that is water repellent, insoluble in alcohol and acetone, soluble in xylene and insensitive to detergents (Triton X-100, Tween 20), varying pH and temperature.

Part 6507: GnomePen^™ Classic Liquid Blocker:  is one of the thinnest PAP pen tips available, allowing for adjacent circles, lines or a drawn pattern to be applied on a single slide. 350 applications.

Part 6508: GnomePen^™ Flat Liquid Blocker: produces a wider, flatter line and is optimized for Z-stack confocal microscopy. 250 applications.

METHOD:

Technique:  Paraffin, frozen sections and tissue culture cells

• • Manual staining procedures
  • Manual immunohistochemistry (IHC) procedures
  • Manual immunofluorescence Assay (IFA) procedures
  • Confocal microscopy

PROCEDURE:

1. 1. Shake pen thoroughly before use.
   2. Practice applying GnomePen^™ liquid barrier on a test slide; push pen tip against the glass and apply a thin liquid barrier that dries to a film. If flow does not instantly begin, gently squeeze the pen body.
   3. Store GnomePen^™ tightly capped; vertically with cap end up.
   4. Paraffin Section Method:
      1. 1. Deparaffinize sections thoroughly in three changes of xylene, 3 minutes each. Hydrate through two changes each of 100% and 95% ethyl alcohols, 10 dips each.  Wash well with distilled water.
         2. Remove slide from water, blot excess solution from slide and tissue section. Or place long edge of slide on absorbent material to remove excess moisture.
         3. Encircle tissue section(s) on slide surface with GnomePen^™ as illustrated. Do not touch the pen to any edges of the tissue.
         4. The liquid barrier can be drawn on a slightly damp slide.
         5. See Procedure Notes #1 and #2.
   5. Frozen Section and Tissue Culture Cells:
      1. 1. Encircle frozen tissue section or tissue culture cells on slide surface at room temperature with the GnomePen^™ as illustrated. Do not touch the pen to any edges of the tissue or culture cells.
         2. See Procedure Notes #1 and #2.
         3. The liquid barrier should be applied before fixation or prior to the immersion of slide into water or buffer.

1. 6. After liquid barrier application, allow slide to dry in a flat position for 30-60 seconds at room temperature. Proceed with procedure when the drawn barrier has completely dried.
      1. 1. See Procedure Note #3.
   7. Drain/rinse reagents off between staining steps; blotting slide and tissue as needed to remove excess solution.
      1. 1. See Procedure Note #4.
   8. Complete staining; coverslip with compatible mounting medium.

PROCEDURE NOTES:

1. 1. Once a tissue section is touched with GnomePen^™ liquid barrier it cannot be removed. The section remains useable but colorization will result on the touched tissue.
   2. If the tissue section is not completely encircled by the GnomePen^™ barrier film, reagents will not be fully retained on the section and flood out onto the slide. This may compromise complete and adequate tissue coverage by reagents.
   3. If GnomePen^™ barrier lines are not completely dry prior to staining, a precipitate from reaction with reagents may occur.
   4. The use of Slide Moisture Chamber (68431, 68432) or StainTray™ (6847, 6848) is recommended for manual staining to maintain slide organization and a moist environment during the procedure.

REFERENCES:

1. 1. Grizzle, William, Cecil Stockard and Paul Billings. “The Effects of Tissue Processing Variables Other Than Fixation on Histochemical Staining and Immunohistochemical Detection of Antigens.” The Journal of Histotechnology 24.3 (2001): 213-219.
   2. Modifications developed by Newcomer Supply Laboratory.

If you are outside of North America, please visit the Invignome website for a distributor near you.