Formaldehyde Test Kit
Visual Kit
Range | MDL | Method | Type | Kit Cat. No. | Refill Cat. No. |
---|---|---|---|---|---|
0.0 - 1.0 & 1 - 10 ppm | 0.1 ppm | Purpald | CHEMets | K-4605 | R-4815 |
CHEMetrics offers a visual test kit employing the well-known Purpald® reagent to deliver sensitivity and accuracy within two minutes or less. Based on CHEMetrics patented Self-Filling Reagent Ampoule technology. Premixed. Premeasured. Precise. Each kit contains 30 tests.
The Purpald Method
Purpald® is subject to fewer interferences than Schiff's reagent or chromotropic acid procedures. A purple-coloured complex is formed when Purpald in alkaline solution reacts with formaldehyde. Results are expressed as ppm (mg/l) CH2O.
Shelf-life of the Purpald Reagent: five months. We recommend stocking quantities that will be used within four months.
Reference:
Purpald® developed by Aldrich Chemical Co.
Technical Data Sheet |
Applications
Formaldehyde, a toxic substance, is used in the following applications: metal plating baths, textile treatments, biological specimen preservatives, and disinfectants of medical equipment. Commercial formaldehyde gas is readily soluble in water.