Some Very Different Cocktails

Crushed ice is placed in the cocktail mixer and 2 cl curagao added, followed by 2 cl orange juice and 4 cl brandy. The mixture is shaken thoroughly and poured through a sieve a beautifully colored drink is obtained. 

3/8 L tomato juice, 1 dessertspoonful of brandy and the juice of half a small lemon are mixed with a teaspoonful of Worcester sauce and one of pepper sauce. This mixture is divided between 4 glasses and small cubes cut from a ripe pear (or small slices of banana) are added. Four teaspoonfuls of horseradish are stirred with a little sour cream and a teaspoonful of this liquid added to each glass. 

To all those who would like to try out these cocktails we say Cheers  

Chemicals should never be stored in containers used for food  

To be on the safe side the experiment is carried out in a glass tube about 50 cm long and 4 cm in diameter which can be closed with a stopper. 

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Another element is the use of a cocktail of different Scheduled chemicals in a single proficiency test. Applying a cocktail of chemicals may not be very realistic, however, it is considered unavoidable in order to train participants in the analysis of as many different Scheduled chemicals as possible in a small number of tests. The chemicals, used for spiking the samples, have been reviewed, which revealed that certain Scheduled chemicals have not been covered in the first 10 proficiency tests. Therefore, it would be recommendable to include such chemicals in future scenarios. The same recommendation applies to several identified categories of chemicals, which have been applied in previous proficiency tests, but created difficulties (repeatedly) for some of the designated laboratories, as well as for most of the nondesignated laboratories that regularly participate in the scheme. 

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