Drager Detection Tubes - Chromic Acid 0.1/a (Pack of 9)
Not only do these Drager short-term detection tubes measure Chromic Acid (0.1/a) they also detect other substances including Calcium Chromate, Chromates (alkali), Potassium Dichromate, Sodium Chromate, Strontium Chromate and Zinc Chromate.
One pack contains 9 pieces and have a shelf life of 2 years.
The Drager Gas Detection Pump (Accuro) is compatible with the short-term gas detection tubes. You can purchase this product by clicking here.
- Hard-to-reach and on-the-spot measurements can be carried out using the tubes, pump and accessories
- Obtain measurements within 10 seconds to 15 minutes (depending on the type of tubes
- Pre-entry checks, confined space entry, variations in concentration levels in the workplace and contamination of breathing zones are possible applications which may use tubes
|Standard Measuring Range:||0.1 to 0.5 mg/m3
Discoloration compared to
|Number of Strokes n:||40|
|Time for Measurement:||approx. 8 min|
|Standard Deviation:||± 50 %|
|Color Change:||white --> violet|
|Ambient Operating Conditions|
|Temperature:||5 to 40 °C|
|Absolute Humidity:||< 20 mg H2O / L|
|a) CrO3 + H2SO4 --> CrVI
b) CrVI + diphenylcarbazide --> CrIII + diphenylcarbazone
|Metal chromates such as zinc or strontium chromate are indicated with about half the sensitivity. CrIII compounds do not affect the indication. Very high chromate concentrations lead to a rapid bleaching of the indication. Measurements should be repeated with less strokes.|
|After carrying out the required 40 pump strokes the reagent ampoule must be broken, the liquid transferred onto the indicating layer and carefully drawn through it using the pump.|