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日本光明理化工業株式會社是從1947年開始生產氣體檢測管的，也是日本zui大和zui早生產氣體檢測管的廠家，北川式檢測管目前占領了日本絕大部分的市場。日本光明理化生產的一些儀器是日本*廳用品。煤油汽油檢測管是日本消防署用檢測管。
Packaging: 10 tubes/box
The detector tube can measure Gasoline and/or Kerosine qualitatively. It is commonly used in the fire stations in order to specify the cause of the fire because it is easy to detect such low-boiling point mineral oils in the fire site. Without using the tube, an accurate analysis （by using GC etc） is absoluy needed in any case.
| Measuring gas | Detector tube for crime investigation |
| Chemical Formula | - |
| Tube No. | 290PII |
| Measuring Range | - |
| No. Of pump stroke | 1 |
| Colour change | White à [Gasoline] Yellow/Brown/Greenish brown [Kerosene] Brown/Pale Pink/Pale brown |
| Typical Applications | Discriminate Gasoline and/or Kerosene |
| Shelf life （year） | 1 |
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