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Rapid colorimetric analysis of chlorhexidine in pharmaceutical preparations.
A colorimetric determination of chlorhexidine is described. The method is based on the formation of a yellow complex between the drug and bromcresol green. The absorption peak of this complex,Expand
In vitro potential measurement, anaesthetic and antimicrobial effects as indicators of beta-blocker toxicity of the cornea.
Three tests were utilized to determine and compare the toxicity of timolol, propranolol and two new aliphatic and alicyclic oxime ethers with beta-blocking activity (falintolol and compound POS 7).Expand
Are local tolerance tests in animals always necessary?
The Draize test was introduced in 1944 as a toxicological standardization method to study irritation and toxicity of substances applied to the eye (and the skin). It has been considered, from thatExpand
[Automatic sampling system in microbiological quality control (author's transl)].
Are local tolerance tests in animals always necessary?