Generally speaking there are two different types of lead acid battery, Starting and Deep Cycle. If a starting battery is routinely deep cycled (discharged below 20%-50% of max capacity) it will generally fail after 30-150 cycles. The same starting battery will last for thousands of cycles if it is just used normally (2% - 5% discharge).
These phosphates precipitate the solids to the bottom of the boiler drum. At the bottom of the boiler drum there is a bottom blow to remove these solids. These chemicals also include anti-scaling agents, oxygen scavengers, and anti-foaming agents.
Types and Categories of Hazardous Chemicals. Lewisite, sulfur mustard, nitrogen mustard, ... Blood/Systemic Agents (Knockdown Syndrome Agents) Hydrogen cyanide, arsine, ... Choking/Lung/Pulmonary Agents (Irritant Gas Syndrome Agents) Ammonia, chlorine, phosgene, ... Incapacitating Agents Fentanyl, QNB (BZ), ...