Cyanide

This test paper allows the quick and easy detection of hydrocyanic acid and cyanides in aqueous solutions and extracts. They are for example formed in the manufacture of fruit brandies and are toxic even in low concentrations. To detect cyanides in solution, a drop of concentrated sulfuric acid is added to 10 ml sample. Hydrocyanic acid gas is formed and can be detected at the boundary layer between water and air. *For semi-quantitative test see Ref 91318 QUANTOFIX® Cyanide. Instruction Sheet (pdf)

Color reaction: pale green → blue

Scope of delivery: 1 reel of 5 m length and 10 mm width

These test strips allows the quick and easy determination of cyanide in solutions. The test strips come with all necessary reagents, so that measurements can be started immediately. Within 3 minutes one gets a reliable result. Cyanide is extremely poisonous. The lethal dose is 1 mg/kg weight. Careful control of the cyanide concentration is therefore essential, whenever cyanides are used for industrial processes like for example electroplating or gold-mining. Cyanide control is also important during the production of fruit-brandies made from stone fruits. QUANTOFIX® Cyanide test strips are the ideal choice to check cyanide concentrations quickly and safely. Only free cyanides or cyanide complexes which can be decomposed with chlorine are detected. Strongly alkaline solutions (pH > 10) must be adjusted to a pH of 6 - 7 using dilute sulphuric acid. Thiocyanates in excess of 1 mg/l produce a similar coloration. Iodide and bromide above 5 mg/l cause the colour to fade as does sulphide above 20 mg/L. Instruction Sheet (pdf)

Color Reaction: white→ violet

Scope of delivery: 100 test strips in a tube, additional reagents, instruction leaflet in a box

Cyanide ions react with chlorine to form cyanogen chloride, which splits the pyridine ring and forms glutaconedialdehyde. By aldol condensation with barbituric acid a violet polymethine dye is produced. Cyanide ions are very toxic because they block the iron of the respiratory enzyme and thus inhibit the oxygen transport. For humans 1 mg cyanide per kg body weight is considered lethal.
This test covers free cyanide and cyanide complexes which can be destroyed with chlorine. If interfering substances like heavy metal complexes, thiocyanate, sulphide, dyes or aromatic amines are present, a distillation according to DIN 38 405-D 13–2–2 must precede the cyanide test. For the determination of easily released and total cyanide as well as for the determination of cyanide in stone fruit spirits. Instruction Sheet (pdf)

Sea water analysis: Yes

Scope of delivery: Reagents for 100 tests, color chart and accessories in a box

Tube test for the determination of easily liberated cyanide. Precise rapid tests for all kind of water and waste water samples. Time-saving and reliable analysis together with our NANOCOLOR photometers. Instruction Sheet (pdf)

Sea water analysis: Yes

Scope of delivery: Rugged box with 20 test tubes. Sufficient for 20 tests

Tube test for the determination of Cyanide. Precise rapid tests for all kind of water and waste water samples. Time-saving and reliable analysis together with our NANOCOLOR photometers. Instruction Sheet (pdf)

Sea water analysis: Yes

Scope of delivery: Rugged box with 20 test tubes. Sufficient for 20 tests