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Data validation and analysis

Data validation                                   
ESdat is able to produce a Chemical Quality Assurance Report summarising the following QA checks and flagging any potential issues:

Field QA
  • Field duplicates and triplicates (Relative Percent Difference (RPD) values)

  • Field blanks, trip blanks, rinsates

  • Trip spikes

Lab QA
  • Lab duplicates (RPD values)

  • Holding times

  • Inorganic logic checks (Ionic balance, TDS>Na+Cl, COD>BOD, etc.)

  • Lab control samples/reference materials

  • Matrix spikes

  • Surrogates

Data analysis


A graph may be produced for any time-series data. Graphing features will enable you to analyse and present your data via:
  • trend analysis including Mann Kendal or Linear Regression;
  • annotating the graph (TUp, TDn, and LH stand for Trending Up/Down, Last value Highest);
  • producing your graphs in Excel (can be edited like any other Excel chart);
  • saving and opting to automatically update when opening in Excel;
  • displaying compliance levels; and
  • customisable templates. 

Comparing with environmental guidelines/compliance levels

Environmental Standards, and exceedances can be shown and flagged on all the ESdat outputs, including chemistry output tables, graphs, and maps. ESdat comes pre-loaded with most regulatory guidelines and users can add their own site-specific or other guidelines as required.


Chemistry Tables are rapidly generated and exported to Excel. Users are able to specify:
  • compound orientation & grouping;
  • environmental standards to be included;
  • customisable exceedance formatting;
  • statistical output;
  • templates; and
  • other settings.