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  2. Professional Sports Authenticator - Wikipedia

    en.wikipedia.org/wiki/Professional_Sports...

    To attain this grade, the front of the card should display centering of 60/40 or better, while the back must exhibit centering of 90/10 or better. 10 - Gem Mint (GEM-MT) - The card features impeccably sharp corners, retaining its original gloss in full. The card's focus is sharp, and it is devoid of any staining.

  3. Collectors Universe - Wikipedia

    en.wikipedia.org/wiki/Collectors_Universe

    In 2000, Collectors Universe acquired James J. Spence, Jr.'s sports autograph authentication company and later acquired privately held Odyssey Publications Inc. [3]. In February 2009, Collectors Universe sold its currency authentication and grading division to a new company formed for the acquisition.

  4. PSA - Wikipedia

    en.wikipedia.org/wiki/PSA

    "PSA" (song) by SZA, from the album Lana (2023) PSA 5.7 Rock, a pistol; Penal substitutionary atonement, a theory of atonement in Christianity; Professional Sports Authenticator (PSA), an authenticator of sports and trading cards, and similarly hand-signed artifacts; Autonomous Socialist Party (disambiguation) Pisa language or Asue Awyu, ISO ...

  5. PDF/A - Wikipedia

    en.wikipedia.org/wiki/PDF/A

    PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...

  6. Child-resistant packaging - Wikipedia

    en.wikipedia.org/wiki/Child-resistant_packaging

    The child-resistant locking closure for containers was invented in 1967 by Dr. Henri Breault. [7]A history of accidents involving children opening household packaging and ingesting the contents led the United States Congress to pass the Poison Prevention Packaging Act of 1970, authored by U.S. Senator Frank E. Moss of Utah.

  7. Chemistry of pressure-sensitive adhesives - Wikipedia

    en.wikipedia.org/wiki/Chemistry_of_pressure...

    The pressure applied to the tape allows the tape to have better contact with the surface and allows the physical forces between the two to build up. Usually, increased application pressure increases the bond of the adhesive to the substrate. PSA tape laboratory testing is often conducted with a 2 kg roller to increase test uniformity. [13]

  8. Pressure-sensitive adhesive - Wikipedia

    en.wikipedia.org/wiki/Pressure-sensitive_adhesive

    In contrast, pressure-sensitive adhesives (PSAs) form a bond simply by the application of light pressure to marry the adhesive with the adherend. Pressure-sensitive adhesives are designed with a balance between flow and resistance to flow. The bond forms because the adhesive is soft enough to flow, or wet, the adherend.

  9. Poison Prevention Packaging Act of 1970 - Wikipedia

    en.wikipedia.org/wiki/Poison_Prevention...

    Colestipol in powder form in packages containing no more than 5 grams of the drug. Conjugated estrogen tablets when dispensed in mnemonic packages containing no more than 32 mg of the drug. Ethylene glycol. Household substances in liquid form containing 10% or more by weight of ethylene glycol packaged on or after June 1, 1974. Acetaminophen.