Name:
ISO 6387:1983 PDF
Published Date:
02/01/1983
Status:
Active
A 0,5 % (m/m) aqueous soap solution is prepared, and after maintaining this at testing temperature for 24 h, an aliquot portion of this solution is taken. This aliquot portion is mixed with a dilute solution of the dispersing agent (surface active agent) and subsequently with a specified volume of water of known calcium hardness. The mixture is maintained for 1 h at the testing temperature and then the calcium soap present in a aliquot portion of the lower layer is titrated with a standard volumetric solution of hydrochloric acid in the presence of bromcresol green as indicator.
| File Size : | 1 file , 270 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 3 |
| Published : | 02/01/1983 |
