Q: Is the main ingredient chlorine? Do these tablets have an expiry date? If so how long will they last?
A: There is no mention of chlorine being the main ingredient in these and the individual packets have Sodium Dichloro-isocyanurate written on them. They do have an expiry date on them and are usually good for approx 3-4 years.
Q: I am going to egypt can i take these tablets oraly (swallow) before eating their food.
A: These are not to be taken orally. They must be dissolved in water and left for 30 mins before drinking.