After one hour had elapsed, samples were withdrawn from the oven and then individually immersed in 1 mL de-ionized water in a hermetically sealed plastic container, to be later stored in a chamber at 37 ± 1 C. After 24 hours, samples were removed from the chamber and withdrawn from the storing solution, they were then rinsed with deionized water and excess water was removed with blotting paper.
Una hora después las muestras se retiraron de la estufa y fueron inmersas individualmente en 1 mL de agua desionizada, en un recipiente de plástico sellado herméticamente.