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YSI MODEL 3640 ORP ELECTRODE ASSEMBLY INSTRUCTIONS The YSI Model 35,10 Electrode Assembly is shipped with a MAIKrZKAMCK bottle of 7abe11 Solution chemicals, a warranty card. If the platinum surface of the electrode becomes and a cleaning certificate. coated, erroneous readings may result Remove the bulb guard to expose the p►etlnum for ease of cleaning. ' OENCRxM011 1. Soft coatings should be removed by use of a squirt the YSI 3540 OAP Electrode Assembly is designed for use bottle or by gently wiping with s waft cloth Be ver? with the YSI 3560 Nater Quality Monitor System, but it careful not to scratch the platinum. asy be Used with other ORP measuring symteme that 2. Hard coatings or organic chemicals should be removed ' ergnire sensors with similar specifications. The rugged 5.5 inch long polymer body will withstand demanding by use o[ an appropriate chemical solvent, by gently field and laboratory use. A spin-oft bulb guard is scrubbing ". o a very fine cleansing powder such das e provided for easyclean! and 'saftsCrub or by gently polishing It with 600 grade ng Protection. The el mat silicon carbide paper. Net w pitted of the paper !liver chloride reference eleettodr and platinum work-- with water and gently polislk the electrode with as ' lug electrode are held within a porous Teflon mwtrlx, surrounded with a 4K KCI gel, and sealed to ellmivate twisting m.otlnu the need far adding electrolyte and to prolong their HOTRI After tlls platinum surface has basis cleaned, the worltieg life. electrode should soak for 6 to 74 hours In 4 0 pil buffer, and than he chocked agalu with vSl 36ea Loball ' The 3$40 has a 36 inch cable end a yellow BMC cover A aolutlon before further usa T*11 W end cap distinguishes it from the elmilar- alppaaring pHtprobe, which has a black and cap. atROU"a x1JCCTR00K rUNCriON ' 1plen tested with Yel 3682 Zobrll Solution, the probe When it is clean and in good working order, the 3540 will respond quickly to the electrochemical potential rates ■ voltage of 231 t25 mV. of a redox reaction The response to this reaction, the unit is shi however, depends on the stats of the platinum surface. Aped in a soaker bottle containing pli The platinum Is subject to costing or "poisoning" by 4NO buff-6r. To prevent the ■onsor from drylnp our, the ch'mic'jl.. ' soaker ?crottle should be used to store It whenever It to not in use. Unllke pll systams, ORP Systems cannot be calibrated against buffers Therefore, a solution of known value S 'ICATIOliB must be used as a function check The YSI 3682 Zobell ' Solution has a known value of 231 125 mV at 25-C when using the YSI 3540 ORP Electrode The potassium ferric- 0" R41190: -1500 to 1500 sIV ferrocyanide Zobell Solution is recommended by the United States Geological Survey. (U.S.G S.), as the lesperature Range: -5 to 509C standard reference solution. ' - Accuracy: 11.0% of full range I Place thn shorting cap on the pH input jack Rinse Raaponae TA=: 95% of reading In 10 seconds when new the ORP electrode and a temperature sensor with dslonlaed or distilled water and connect them to the I meter. Pat dry with a laboratory tissue. Follow with a Ialpedancel 1000 ohms at 256C rinse of a small amount of reconstituted YSI 3682 Aaauraey is based on the throe-point calibration pro- Zobell Solution scribed by ASZI1, described 1n Section 0 1498-76 of the 2 Pour 3682 Zobell Solution into a ample cup (such as )4M41 Ao Il 21 MM St d , Volume ll 01 one from the YSI 3565 sample Cup Pack) and Immerse the ORP electrode and temperature wonder In the solution. 3 Turn on the Instrument and allow the sensors to ' OFRAI►tI01� equlllbrate in the solution The 3340 is designed for use in the YSI 3$50 Sample 4. Set the function switch to the mV mods. Read the Chamber Assembly. once correct function of the 3540 Is temperature and calculate the correction to 25aC by aawrtained, install the eleeta'ode in the 3550 in the adding 1.3 mV for each degree below 25-C, or by poft Narked ON. Set the pH funJtlon switch on the 3500 subtracting 1 3 mV for each degree above 25-CJ or to will and oonneat the 3340 to the mY Input Jack See determine the correction by use of the table provided •the 3560 System Manuel for further Instructions in the Zobell Solution Instruction sheet. A corrected reading within 25 mV of the value Indicated assures correct electrode function • ! YSI Incorporated Yeikrw6prin�plralrualrntGo fnC,YelluwSPflnFal)hkrlliR71►CA•Msx�eSll7f•77Ia1•Im14144iF1F11'•fss7117f,7Y1Si•Tclra2ltS/i7 C