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blot paper acid

Blotting paper

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Blotting paper on a roll

Blotting paper, sometimes called bibulous paper, is a highly absorbent type of paper or other material. It is used to absorb an excess of liquid substances (such as ink or oil) from the surface of writing paper or objects. Blotting paper referred to as bibulous paper is mainly used in microscopy to remove excess liquids from the slide before viewing. Blotting paper has also been sold as a cosmetic to aid in the removal of skin oils and makeup.


  • 1 Manufacture
  • 2 Applications
    • 2.1 Art
    • 2.2 Chemical analyses
    • 2.3 Drugs
    • 2.4 Writing
    • 2.5 Cosmetics
  • 3 Notes
  • 4 References

Manufacture[ edit ]

Blotting paper is made from different materials of varying thickness, softness, etc. depending on the application. It is often made of cotton and manufactured on special paper machines . Blotting paper is reputed to be first referred to in the English language in the 15th century but there is a tradition in Norfolk, England that it was invented by accident at Lyng Mill on the River Wensum . [1]

It is reported that a Berkshire (England) paper mill worker failed to add sizing to a batch of paper that was being produced. The batch was discarded. Subsequently, someone tried to write on a piece of this discarded “scrap” paper and found that it rapidly absorbed any ink applied, making it unusable for writing. Its marked absorbency having been noted, however, led to its subsequently being produced and used as blotting paper, replacing sand, which was the material that had been used for absorbing superficial wet ink. In a time when most paper was produced from “rags”, red/pink rags, from which it was difficult to remove all color and had generally been discarded, were now directed to the production of blotters, hence the historically characteristic pink color of blotters. [2]

Applications[ edit ]

Art[ edit ]

A form of blotter paper commonly known as watercolor paper is produced for its absorbent qualities, allowing much better absorption of water and pigments than standard art or drawing papers. Although usually categorized as separate from blotting paper, differences in the constituents and thickness of blotting paper and watercolor paper are subtle, and making a distinction between the two is unnecessary as the production process is nearly identical.

Chemical analyses[ edit ]

Blotting paper is used in chemical analyses as stationary phase in thin-layer chromatography . Blotting paper is also used in pool/spa maintenance to measure pH balance. Small squares of blotting paper attached to disposable plastic strips are impregnated with pH sensitive compounds usually extracted from lichens , especially Roccella tinctoria . These strips are used similarly to litmus strips, however filter paper is usually used for litmus strips, generally to allow for the property of diffusion.

Drugs[ edit ]

Drugs active in microgram range, most notably LSD , are commonly distributed on blotting paper. A liquid solution of the drug is applied to the blotting paper, which commonly is perforated into individual doses and artfully decorated with what is known as blotter art. Vanity blotter is blotter art that hasn’t been exposed to LSD and is usually sold as a collectible, although inevitably much of this art ends up in illegal distribution. The artwork is printed onto blotter paper and then sometimes perforated into tiny squares or “tabs” which can be torn or cut apart. [3] Most blotter art designs have grid lines as part of the design to either aid in perforation or to be left as a cutting grid. Blotter as a delivery method allows for easy dosing of potent substances and easy sublingual administration of drugs which has made it increasingly popular as a preparation for other potent drugs including 25I-NBOMe and alprazolam . [4]

Plain white LSD blotter without artwork is commonly referred to as WoW (White on White) [note 1] and is usually not perforated but rather gridded with a pen and sometimes laid on commonly obtained watercolor paper.

Writing[ edit ]

Blotting is frequently necessary when using dip pens and occasionally when using fountain pens . This was first done by sprinkling pounce over the wet ink.

When used to remove ink from writings, the writing may appear in reverse on the surface of the blotting paper, a phenomenon which has been used as a plot device in a number of detective stories, such as in the Sherlock Holmes story The Adventure of the Missing Three-Quarter . [5]

Cosmetics[ edit ]

Blotting papers are also commonly used in cosmetics to absorb excess sebum oil from the face. They are popularly marketed and have been sold by numerous cosmetic brands worldwide such as Mac and Bobbi Brown , as well as UK high street store: Boots UK . Prices for blotting papers can range from as low as $3.00 per packet to as high as $30 or more. More affordable brands can be found by makers such as Clean and Clear and pharmacies such as Walgreens or CVS often carry their own brands for a reduced price.

The papers are often dyed, for wider market appeal, and dusted with salicylic acid and minerals to actively prevent the formation of comedones and acne . However, there is a popular debate of whether blotting papers can help reduce acne by absorbing excess oil, or cause it. The quality of the blotting papers and the use of other ingredients such as mineral oils may be a determining factor.

Notes[ edit ]

  1. ^ “White on white refers to “white fluff”, a grade of supposedly high purity LSD, on white paper.

References[ edit ]

  1. ^ Norfolk Mills – Lyng watermill
  2. ^ From the publication Printing Art, Vol 35, p 235
  3. ^ Erowid. “Erowid LSD (Acid) Vault : Blotter Art Examples” . The Vaults of Erowid. Retrieved December 7, 2013. 
  4. ^ “INTELLIGENCE ALERT – XANAX BLOTTER PAPER IN BARTLESVILLE, OKLAHOMA” (Microgram Bulletin). US DEA. May 2008. Archived from the original on 2008-05-21. 
  5. ^ Doyle, Sir Arthur Conan (1905). “CHAPTER XI: “THE ADVENTURE OF THE MISSING THREE-QUARTER” . The Return of Sherlock Holmes. Lit2Go. London: Georges Newnes, Ltd. Retrieved December 7, 2013. 
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