Analytical Method: Zinc (total) in building materials

Instruments and Reagents:

Cat.No. 173016  Spectroquant® VIS Spectrophotometer Prove 100 or

Cat.No. 173017  Spectroquant® UV/VIS Spectrophotometer Prove 300 or

Cat.No. 173018  Spectroquant® UV/VIS Spectrophotometer Prove 600 or

Cat.No. 109748  Spectroquant® Photometer NOVA 30 or

Cat.No. 109751  Spectroquant® Photometer NOVA 60 or

Cat.No. 173632  Spectroquant® Colorimeter Move 100

Cat.No. 114946  Rectangular cells 10 mm and/or

Cat.No. 114947  Rectangular cells 20 mm and/or

Cat.No. 114944  Rectangular cells 50 mm
Cat.No. 114566  Spectroquant® Zinc Cell Test
Cat.No. 100861  Spectroquant® Zinc Cell Test
Cat.No. 114832  Spectroquant® Zinc Test*
Cat.No. 104885  Potassium hydrogen sulfate for analysis
Cat.No. 109535  MColorpHastTM Universal Indicator strips pH 0 - 14
Cat.No. 116754  Water for analysis
*not compatible with Move 100
Sample preparation - total content:
Place 200 mg of the finely powdered material along with 5 g potassium hydrogen sulfate in a DURAN® test tube, mix and heat gently in a Bunsen flame until a clear orange-colored melt is obtained and no more gas is given off. Allow to cool, add water for analysis to dissolve most of the residue and transfer the suspension to a 100-ml volumetric flask. Make up to the mark with water for analysis and mix well.
Filter through a paper filter and adjust the pH to 5 - 8.
Determine with the above mentioned test kits.
Zinc (total) content in % = analysis value in mg/l Zn x 0.05


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