Preferred method for processing thermal paper and items sensitive to heat. May be used on any porous item needing latent development. May be especially useful on colorful backgrounds since there is a high fluorescence when viewed with ALS. Best results usually visualized between 475nm and 515nm with an orange barrier filter or glasses.
Shelf life: 6 months. To extend longevity of this product, always store in the provided amber sleeve. Excellent for processing prints on currency!