Draeger, Inc. - DRA CH19501 - DT Nickel Tetracarbonyl 0.1/a (9)

Product Specific Information; Dräger Tubes - Nickel Tetracarbonyl 0.1/a, Short Term Tubes, 9 tests per box, Draeger P/N CH19501 Standard Measuring Range : 0.1 to 1 ppm Discoloration compared tocolour standard. Number of Strokes (n) : 20 Time for Measurement : app. 5 min Standard Deviation : ± 50 % Colour Change : yellow -> pink Ambient Operating Conditions Temperature : 0 to 30 °C Absolute Humidity : < 30 mg H2O / L Reaction Principle a) Ni(CO)4 + I2 -> NiI2 + 4 CO b) NiI2 + Dimethylglyoxime -> pink coloured complex Cross Sensitivity Iron pentacarbonyl is indicated with a brown discoloration and witha lower sensitivity than nickel tetracarbonyl.Hydrogen sulphide and sulphur dioxide react with the iodine preparationand can suppress the nickel tetracarbonyl indication. TheInstructions for Use of this tube describe how the interference canbe quickly recognized. Additional Information After performing the required 20 pump strokes the reagent ampoulemust be broken and the liquid carefully drawn onto the indicationlayer using the pump.