History. Narrative Essay Examples In a narrative essay you tell a story, but you also make a point. So, it is like a story told for a reason. Narrative Essays: To Tell a Story There are four types of essays : â¢Exposition-gives information about various topics to the reader. â¢Description...
As a minimum, the average pool will want to keep the following chemicals on hand â even if you use a salt chlorinator, you will need these other pool chemicals from time to time: 1  Chlorine tablets and pool shock. 2  Pool pH Up and/or pH Down. 3  Test strips or test kit.
Swimming pool chemicals control bacteria and algae and provide a safe and clean pool. In concentrated form these chemicals are potentially dangerous. Swimming pool chemicals are reactive. If accidentally mixed with other chemicals, the mixture can become unstable and produce poisonous fumes or even fire. Pool chemicals do not pose a threat if used and stored correctly.