How to Prepare Pokémon Cards for PSA Grading — 5-Step Method
How to prepare Pokémon cards for PSA, Beckett and CGC grading. UV inspection, cleaning, polish, and packaging: the Spark & Polish® method to maximize your grade.
Summary: To prepare Pokémon cards for PSA grading, follow 5 steps: UV inspection, surface cleaning with Magic Clean Spray on microfiber, micro-scratch treatment on holos with Polish 2in1, protective finish with Bubblegum Spray, and packaging in a Card Saver semi-rigid. Only surface, edges, and corners are improvable — centering is a manufacturing characteristic and cannot be changed.
Submitting a card to PSA or BGS is a decision that requires preparation. The final grade depends on many factors — and only some of them can be improved before submission. This guide explains what PSA evaluates, what you can actually work on, and how to do it correctly.
An important premise: the final grade depends entirely on PSA's graders. No treatment guarantees a specific grade. The goal of pre-grading preparation is to present the card in the best possible aesthetic condition — nothing more.
What PSA evaluates — the 4 criteria
Centering and Surface
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Centering: The position of the artwork relative to the borders. For PSA 10 Gem Mint, front tolerance is maximum 55/45 or 60/40, back must not exceed 75/25. Centering is a manufacturing characteristic — it cannot be corrected.
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Surface: Must retain original gloss without scratches, stains, halos, creases, or print defects. This is the criterion where cleaning and micro-scratch treatment make a difference.
Edges and Corners
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Edges: Must be clean and sharp. Wear, chips, whitening, and silvering all reduce the score. Lifted edges can be corrected with specific tools.
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Corners: Must be perfectly sharp without rounding, fraying, or whitening. Bent corners can be corrected with targeted mechanical treatment.
Centering and original print defects cannot be changed. Surface, edges, and corners — if the damage is not structural — can be improved before submission.
Inspection tools for pre-grading
→ UV Inspection Light — reveals micro-scratches, hidden damage, and contaminants invisible to the naked eye
→ Digital Card Inspector — 1000x magnification for edges and corners, with LCD screen
→ Centering Tool PVC — check front/back centering before submission, the non-correctable criterion that often decides between PSA 9 and PSA 10
Step 1 — Pre-treatment inspection
How to inspect the card before treatment
Before any treatment, inspect the card systematically. Wash your hands thoroughly or wear clean cotton gloves — skin oils transfer to the surface permanently.
Use the Luce UV Portatile — Card Inspection Light to examine corners and edges for whitening and structural imperfections. UV light reveals micro-scratches, contaminants, and defects not visible under normal lighting. Measure centering with the Centering Tool PVC to verify whether the card falls within the PSA 10 range before you even ship it.
Photograph the card in high resolution before any treatment — front, back, edges, and corners. You'll have a documented record of starting conditions.
Step 2 — Surface cleaning
Correct method for pre-grading cleaning
Correct surface cleaning can make a one-to-two point difference in the final assessment. Removing fingerprints, halos, and residue increases perceived brightness and holographic film performance.
Apply Magic Clean Spray to a microfiber cloth — never directly on the card. Light motions from center outward. Allow to dry completely before any other step.
Warning: using a rough cloth or applying excessive pressure adds micro-scratches visible in raking light, lowering the grade instead of improving it. Submitting a still-damp card wrinkles the sleeve during shipping — graders detect this.
Step 3 — Micro-scratch treatment on holos
When to use polish and when to avoid it
Surface micro-scratches on holographic areas can be reduced with a specific polish. Applied correctly, it evens out the foil layer and restores original gloss.
Two important warnings. First: Polish 2in1 must be applied in minimal quantity — rest the black sponge side of the dual-side pad lightly on the product without pushing it into the jar. Too much product doesn't improve the result and risks leaving residue. Second: never use polish on textured-finish cards, vintage WOTC cards, autographed cards, or serial-numbered cards.
PSA has protocols to detect external paste and solution use. Excessive or incorrect treatment can classify the card as "Evidence of Cleaning" (N7) or "Altered Stock" (N5) — categories that exclude a numeric grade. Deep scratches that structurally damage the material are not recoverable with polish.
Step 4 — Protective finish
After cleaning and holo treatment, apply Bubblegum Spray with a microfiber cloth to even out the surface and reduce dust attraction. Allow to dry completely — at least 1–2 hours — before sleeving.
Step 5 — Physical structure (if needed)
Warping, edges, and corners: treat before cleaning
If the card has warping, lifted edges, or bent corners, address these before surface cleaning, not after.
For warping: use controlled humidity and pressing (55–65% RH with HYDROPUMP™ or HUMIDITY STORM™, followed by pressing with EVA foam panels and Crown Lock clamps for 6–36 hours depending on severity). For lifted edges: silicone spatula working parallel to the margin. After any structural treatment, leave the card in the press for at least 30 minutes before proceeding with surface cleaning.
Important disclaimer
All treatments described in this guide improve the card's aesthetic presentation. The final grade depends entirely on PSA or BGS graders and on factors that cannot be controlled. No treatment guarantees a specific grade or a grade jump. Always test any procedure on inexpensive cards before applying it to valuable ones.
Frequently asked questions
Can PSA detect the treatment?
Products applied correctly in micro quantities do not leave visible residue. However, PSA has protocols to detect external paste and solutions. Over-treatment — too much polish, disproportionate buffing — is recognized and leads to altered card classification. The key is restraint: micro quantities, light motions, natural result.
Does warping lower the PSA grade?
Not directly. PSA presses and encases the card in the slab, physically correcting the piece, so a warped card can still receive PSA 10 if all other criteria are met. However, warping can hide surface defects that only emerge after pressing.
Does the protocol work for BGS and CGC too?
Yes. BGS grading criteria are analogous to PSA's — centering, surface, edges, corners — with a separate sub-grade for each criterion. The Spark & Polish® preparation protocol applies across all major grading companies.
What is the difference between PSA 9 and PSA 10?
PSA 9 Mint allows one small imperfection on a corner or edge, or a small surface stain. PSA 10 Gem Mint requires near-perfect results across all 4 criteria. The value difference can be 5–20× for the most sought-after cards.