|
|
SEAPAVAA Newsletter |
|
Dancheck Acidity Tester
Testing and indicating the 'vinegar syndrome' with Dancheck is a must in every film archive in the world.
2-Hour TestA piece of dyed filter paper is placed in contact with the film. It is a very sensitive indicator that senses the acetic acid in the film. It gives an accurate pH reading within two hours. It is blue when you take it out of the pouch. If the color changes to yellow within minutes then your film is in trouble (strong smell). Where you cannot smell acetic acid, leave the film for a couple of hours then take a reading. Find accurate tables where you can interpret the readings on www.dancan.dk
Dancan International Sales Box 308 • 1501 Copenhagen V • Denmark Phone +45 405 04180 • Fax +45 405 44180 dancan@email.dk • www.dancan.dk
|
Danchek is also a monitor 'window' to your film. It is the 'nose' that never gets tired of 'smelling' decaying films. The Danchek insert is a tiny clear plastic 'button' containing dyed silica. It is mounted in the side of your filmcan and the color tells you how decayed the film is. If it is blue or green, the film is okay, but when it turns yellow, then you better do something about it. This can be seen without opening the filmcans.