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'Although differentbrands ofconductivitymeters vary, calibrationprocedures <br />r generalized #w: r .: i Y 1 Y ' • i r: follows: <br />.. <br />t.1. ' c.. <br />1 ontheinstrument.checkbattery. tallow to <br />Rinse2. <br />t plax in <br />the standard solution.Forward LandfM conductivities WithinUsuatt <br />to 1500 <br />umhOA therefore! t t t t v solution t r 1 • Y to Y. <br />Adjust the - meter for the. appropriate conductivity scale* andIOMPerature then read ti . <br />conductivity. <br />•required i"calibrate"t 11 t on i meter to correct. the fintrumeni to rmd <br />the correct conductivity. <br />The calibration process will be.recorded on a conductivity cah'b=tio_a-1og_- - c6pies of calibratiow. <br />•.. for each individual -instrument arc -kept in -a: riti t•.... T:r,. .. <br />t logs -am reviewed. <br />whetherPedodically to assess art mom#. r1 to rc]ahlwat, <br />thercf0re <br />,.. • adjustment ► ►. mmm, . f u a or Y Probes .,q : _ r <br />7'tlrbiditY Metcr <br />i 1 r.: measurement <br />" fis subject <br />tvariations <br />due to <br />t i Yff +nf. 1. For ,.s zeasonturbidity <br />meters .. must be calibrated before and after samplingon +:. t rr_ andat-leastonce more during <br />the day- ' To caffluate a turbidity meter -the instrument reading is aXjm'ted to read pon-ectly for <br />solutions With a standard turVidity. <br />Standard ■ .: •'. r. s • solutions are /I ► ec fivsi4! according to Y < t:. _. bstructions,• +; a. <br />SaImpling event Standard solutions f• turUdity are cOmMCVCi9ffY <br />are <br />Purchased r .+. f: . ! t discarded.aflar shelfhasexpired. i r:. .i dgmdingon It.: <br />brand • standards Y .v :•� ■ . r . w. • o # i ;!r u.': -v+r / . ! • / <br />Yr •c difterent b=ds'of tabidity meters calibration procedures n r of <br />Tum on the instrument, check the battexy, and allow to warm up if necessarf- <br />-'234V849-FOJ%23lOR325 A4 July 14, 2040 <br />a <br />