deletions | additions       diff --git a/pH Specification.tex b/pH Specification.tex  index e65acdd..cd3bd09 100644  --- a/pH Specification.tex  +++ b/pH Specification.tex 
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\section {pH Specification}  \\  The pH  system will: \begin{enumerate} 
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\item A SLS Electrode pH Combination Glass BNC will measure the pH.  \item Measure to a resolution of 0.1 pH value  \end{enumerate}  \item Use Circuitry to digitise signal from pH measuring device.   \begin{enumerate}  \item FRDM KL25Z Microcontroller.  \item LMC6042 Operational amplifier.  \item ICL7660AIBAZA charge pump inverting voltage converter.  \end{enumerate}  \item Maintain a set pH level.  \begin{enumerate}  \item A control algorithm will be written to interface between read pH value and output of acid into system.  \end{enumerate}  \item Hold a reservoir of liquid  \begin{enumerate}   \item A PTFE container will be implemented to hold a strong acid of known molarity.  \item Will support 250ml of solution.  \end{enumerate}  \item Release fluid into bath.  \begin{enumerate}  \item Non corrosive valves will be used to control flow of fluid from reservoir.   \item Actuators will be used to control said valves and release acid.  \item Non corrosive piping will be used to control path of acid.  \end{enumerate}  \item Mount to the main chassis.  \begin{enumerate}  \item Actuators, valves and piping will exist as a standalone structure to be mounted to the main chassis.   \end{enumerate}  \item Be safe  \begin{enumerate}  \item All solutions will be contained with no exposure to external structure.  \end{enumerate}  \item Be powered from the main PSU  \begin{enumerate}  \item Actuators and circuitry will interface and be powered from the PSU.   \item Relevant power electronics will be contained.  \end{enumerate}  \end{enumerate}