Beschrijving
Deze AD Vinegar testers geven de achteruitgang van de film aan.
Het is een zeer gevoelige indicator en toont in verschillende
kleuren de mogelijke aanwezigheid van het “Vinegar Syndrome”
- 250 stuks per vepakking
- Verpakt in zwarte kunststof verpakking met een extra zakje met 1 gram silica (10% Sodium Carbonate) om de strips langdurig in goede conditie te houden.
- Bijgevoegde kaart met indicaties omtrent niveau van “Vinegar Syndrome” in Engels – Frans – Duits en Spaans.
Gebruiksinstructies conform fabrikant:
It is very sensitive indicator that senses the “Vinegar Syndrome” just by touching the film. The color is blue when in the pouch. After taking the wanted number of testers out of the pouch, squeeze the air out and close the pouch carefully. Take the lid off your film can, place the indicator on the film and make a note of the time. The reading can be done after 24 hours depending on the temperature. For cold conditions expect 2-3 days for an accurate reading. 24 hours is based on 20 degree C. Compare the reading with the color chart and make a note of the level of acidity. If the color changes to olive green (pH 4,6) you have reached the critical autocatalytic point, which is the point where you should consider separating it from the rest of the collection and begin to duplicate and/or digitize. If the indicator has not reacted within 24 hours nothing is critical. If you leave the indicator in the open air it will fade. Close contact with severely degraded acetate and nitrate films (touching and sniffing) may be a health hazard. Acetic acid and other acidic products emitted by degraded film have been known to produce contact burns, skin and mucous membrane irritations, and other physiological effects. Protective gloves and adequate ventilation are strongly recommended for handling degraded films.
