A: Yes. Cold water will slow down the setting of the alginate. 1 °C will slow down the setting with approximately 5 seconds. The usage of distilled water will slow down the setting as well, due to absence of calcium. Maximum time possible is somewhere around 4 to 5 minutes.
Alternatively, the setting time can also be increased by using water premixed with various amounts of sodium phosphate dissolved in it.
|Grams/litre water:||Setting time:|
|4||± 4 minutes|
|7||± 5 minutes|
|10||± 6 minutes|
|13||± 7 minutes|
|16||± 8 minutes|
Q: I am an artist/teacher/trainer. I use Cavex alginates for the making of impressions of faces, hands, feet and/or other applications. I would like to dilute the alginate. Is that possible?
A: Yes. 30% extra water will still give a proper impression.
Q: I am an artist/teacher/trainer. I use Cavex alginates for the making of impressions of faces, hands, feet and/or other applications. Is it possible to reinforce the impression with cotton bandages?
A: Yes. Please make sure the bandage is non-impregnated. Some bandages are impregnated with disinfectants or agents to stop bleeding and might interfere with the normal behaviour of the alginate.
Q: How do I reinforce an alginate impression with bandages?
A: Apply thin layer of alginate to body. Apply bandage and immediately apply another layer of alginate. The two layers of alginate will interconnect with the bandage in between. This will result in an impression that is less likely to tear.