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Glossary <br /> OF <br /> REFERENCE TERMS <br /> Acid Any chemical which undergoes dissociation in water with the <br /> formation of hydrogen ions . Acids turn litmus paper red and <br /> have pH values less than 7 . Acids can cause severe burns . <br /> Air diaphragm pump A pump that uses compressed air to drive a <br /> diaphragm which forces liquid through the <br /> pump <br /> Alkali Any chemical substance which forms <br /> soluble soaps with fatty acids . Alkalis are <br /> also referred to as bases . Alkalis turn litmus <br /> paper blue and has a pH greater than 7 . <br /> Alkalis may cause severe burns . Air diaphragm pump <br /> Amperage A unit of electrical current equivalent to a steady current <br /> produced by on volt applied across a resistance of on ohm . <br /> Analytical reports A report from a certified lab on the water or wastes generated <br /> from the wastewater treatment system . This report will often <br /> N <br /> nclude results on oil and grease , TSS , COD , BOD , metals , etc . <br /> Bubbler flow meter A type of flow meter that is used in <br /> combination with a flume to provide <br /> accurate flow measurement . <br /> 2=d11 <br /> Flow meter <br /> Bulk tank A large capacity tank generally used to <br /> process or store wastewater treatment <br /> chemicals . <br /> Calibration To fix , correct , or adjust any process <br /> equipment to within proper specifications . <br /> Chain of custody form A form that is used to insure proper <br /> handling of laboratory samples . Bulk tank <br /> APPENDIX PAGE 11 <br />