Chlorine (Cl2)
Chlorine is a chemical element with the symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity on the Pauling scale, behind only oxygen and fluorine.
SEMA Gases is a manufacturer of span gases in disposable cylinder cans from the Netherlands, established from the want to create a label which is applicable for all brands of gas detection equipment. The products of SEMA Gases are used for calibration of portable gas detection instruments and calibration of fixed gas detection systems. SEMA Gases produces single gases (flammable gases, oxygen, toxic gases) and gas mixtures (2, 3, 4 or 5 gas mixtures) in various cylinder size up to 110 ltr.
Chlorine Calibration Gases
| 34L | 58L | 110L | Cert. tol. | Prod. tol. | Stability (months) |
|
|---|---|---|---|---|---|---|
| 5 ppm Chlorine // Nitrogen | Available | Available | Available | +/- 10% | +/- 20% | 12 |
| 10 ppm Chlorine // Nitrogen | Available | Available | Available | +/- 10% | +/- 20% | 12 |
| 20 ppm Chlorine // Nitrogen | Available | Available | Available | +/- 10% | +/- 20% | 12 |
| 50 ppm Chlorine // Nitrogen | Available | Available | Available | +/- 5% | +/- 10% | 12 |
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