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Boric acid is a weak acid, with pK a (the pH at which buffering is strongest because the free acid and borate ion are in equal concentrations) of 9.24 in pure water at 25 °C. But apparent p K a is substantially lower in swimming pool or ocean waters because of interactions with various other molecules in solution.
An eye wash station in a laboratory Eyewash is a fluid, commonly saline , used to physically wash the eyes in the case that they may be contaminated by foreign materials or substances. Eyewashes may be beneficial to those with sensitive eyes and can provide relief to the painful side effects of sensitivity.
At a meeting of the Society of Arts, on March 29, 1882, Professor Barff delivered a lecture, in which he announced his discovery of boro-glycerine. Barff had been attempting to find a way in which boric acid, a known antiseptic, could be used to preserve meats, at a time when beef prices were considered high.
In eye care, collyrium is an antique term for a lotion or liquid wash used as a cleanser for the eyes, particularly in diseases of the eye.The word collyrium comes from the Greek κολλύριον, eye-salve.
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The following is a sample recipe for BBS: 10 mM Sodium borate; 150 mM NaCl; Adjust pH to pH 8.2 The simplest way to prepare a BBS solution is to use BBS tablets. They are formulated to give a ready to use borate buffered saline solution upon dissolution in 500 ml of deionized water.
It can be prepared by reacting calcium metal with boric acid. The resulting precipitate is calcium borate. A hydrated form occurs naturally as the minerals colemanite, nobleite and priceite. [citation needed] One of its uses is as a binder in some grades of hexagonal boron nitride for hot pressing.
It is formed by the reaction of boric acid and ethanol in the presence of acid catalyst, where it forms according to the equilibrium reaction: B(OH) 3 + 3 C 2 H 5 OH ⇌ (C 2 H 5 O) 3 B + 3 H 2 O. In order to increase the rate of forward reaction, the formed water must be removed from reaction media by either azeotropic distillation or adsorption.