Equipment and Calibration History

History for YSI EXO pH-ORP 22D102641

Rec No.DateLoc FromTitleLoc ToNotes
6846 2024-09-11 Hill Slough pH-ORP Removed Lab none Removed from the HS channel EXO because it is in the air for several hours every day. This probe should remain inundated (or at least humid) for ideal electrolyte longevity.
6779 2024-07-23 Lab none Installed Hill Slough pH-ORP Installed in the Hill Slough channel after calibration. Sonde is in the air during low tide.
6789 2024-07-21 Lab none Calibration Lab none ORP (mV), Last Cal: 2024-04-08
EXO sn 22C103416
EXO/Sensor Firmware 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,230.4 mV,228.6 mV,230.4 mV,0.0 mV,21.363 °C
Note: Fresh pH/ORP module. Used Zobell solution (mixed 2022-09) in small brown plastic bottle.
6788 2024-07-21 Lab none Calibration Lab none pH, Last cal: 2024-04-08
EXO sn 22C103416
EXO/Sensor Firmware: 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,7.01 pH,7.01 pH,7.01 pH,-10.1 mV,20.611 °C
Pt2,10.06 pH,10.29 pH,10.06 pH,-189.7 mV,20.732 °C
Pt3,4.00 pH,3.95 pH,4.03 pH,157.7 mV,20.771 °C
4-7Slope,4-7mVPerDecade,7-10Slope,7-10mVPerDecade
167.8 mV,55.74 mV,179.6mV,58.87
Note: Fresh pH/ORP module. Used opened standards from Dec 2023.
6768 2024-07-16 Hill Slough pH-ORP Removed Lab none Removed from the HS channel and brought back to the lab for routine calibration
6651 2024-04-10 Lab none Installed Hill Slough pH-ORP Reinstalled at the HS channel after regular lab cleaning and calibration
6699 2024-04-08 Lab none Calibration Lab none ORP (mV), Last Cal: 2024-01-22
EXO sn 22C103416
EXO/Sensor Firmware 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,226.7 mV,228.5 mV,226.7 mV,0.0 mV,23.000 °C
Note: Used Zobell solution (mixed 2022-09) in small brown plastic bottle. Waited to calibrate until change <0.1mV/10sec (a few min past the point when "Unstable" changes to "Stable").
6698 2024-04-08 Lab none Calibration Lab none pH, Last cal: 2024-01-22
EXO sn 22C103416
EXO/Sensor Firmware: 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,7.01 pH,7.06 pH,7.01 pH,-8.2 mV,22.000 °C
Pt2,10.06 pH,10.15 pH,10.08 pH,-179.0 mV,22.000 °C
Pt3,4.00 pH,4.14 pH,4.02 pH,154.6 mV,22.000 °C
4-7Slope,4-7mVPerDecade,7-10Slope,7-10mVPerDecade
162.8 mV,54.09 mV,170.7mV,55.98
Note: Waited for each point to change <0.1mV/10sec for calibration (a few minutes past point where "Unstable" changes to "Stable"). Used opened standards from May 2023.
6643 2024-04-04 Hill Slough pH-ORP Removed Lab none Removed from the Hill Slough channel and brought back to the lab for calibration (and to install the new auto wiper that arrived)
6621 2024-01-25 Lab none Installed Hill Slough pH-ORP Installed in the Hill Slough channel after calibration
6552 2024-01-22 Lab none Calibration Lab none pH, Last cal: 2023-10-16
EXO sn 22C103416
EXO/Sensor Firmware: 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,7.01 pH,7.01 pH,7.01 pH,-4.8 mV,19.428 °C
Pt2,10.06 pH,10.04 pH,10.06 pH,-174.7 mV,20.116 °C
Pt3,4.00 pH,4.05 pH,4.01 pH,161.2 mV,21.033 °C
4-7Slope,4-7mVPerDecade,7-10Slope,7-10mVPerDecade
166.0 mV,55.16,169.9 mV,55.71
Note: Calibration pretty close and delta slope and mV per decade are ok. Used opened standards from May 2023.
6551 2024-01-22 Lab none Calibration Lab none ORP (mV), Last Cal: 2023-10-16
EXO sn 22C103416
EXO/Sensor Firmware 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,230.4 mV,227.6 mV,223.3 mV,0.0 mV,21.275 °C
Note: Poured Zobell solution (mixed 2022-09) into small brown plastic bottle for this calibration.
6546 2024-01-18 Hill Slough pH-ORP Removed Lab none Removed from HS channel and brought back to the lab for routine calibration
6450 2023-10-18 Lab none Installed Hill Slough pH-ORP Installed in the Hill Slough channel after calibration in the lab. The whole sonde was raised about 20cm to keep it out of the mud.
6441 2023-10-11 Hill Slough pH-ORP Removed Lab none Removed for inspection in the lab because turbidy/fDOM/ph/ORP look weird
6394 2023-08-24 Lab none Installed Hill Slough pH-ORP Reinstalled after quarterly cleaning and calibration
6374 2023-08-17 Lab none Calibration Lab none pH, Last cal: 5/5/2023 15:26
EXO sn 22C103416
EXO/Sensor Firmware: 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,7.00 pH,1.33 pH,7.00 pH,-10.9 mV,23.727 °C
Pt2,10.10 pH,5.28 pH,10.10 pH,-181.5 mV,24.030 °C
Pt3,4.01 pH,-2.66 pH,3.98 pH,163.0 mV,24.696 °C
4-7Slope,4-7mVPerDecade,7-10Slope,7-10mVPerDecade
173.8 mV,58.14,170.7 mV,55.06
Note: Very far off but delta slope and mV per decade are ok. Used opened standards from May 2023.
6373 2023-08-17 Lab none Calibration Lab none ORP (mV), Last Cal: 5/5/2023 15:04
EXO sn 22C103416
EXO/Sensor Firmware 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,223.0 mV,239.5 mV,223.0 mV,0.0 mV,22.877 °C
6442 2023-06-14 Lab none Installed Hill Slough pH-ORP Installed new tip on pH/ORP probe
6278 2023-04-25 Hill Slough pH-ORP Removed Lab none Removed from HS channel for routine calibration
6154 2023-01-06 Lab none Installed Hill Slough pH-ORP Installed in the channel at Hill Slough (same height as before) after calibrating in the lab yesterday.
6149 2023-01-03 Hill Slough pH-ORP Removed Lab none Removed from Hill Slough channel and brought back to the lab for calibration.
6015 2022-09-29 Lab none Installed Hill Slough pH-ORP Channel Installed as part of the EXO2 sonde in the channel at Hill Slough.
6057 2022-09-23 Lab none Calibration Lab none ORP (mV), Last cal: Unknown
EXO sn 22C103416
EXO/Sensor Firmware: 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,223.0 mV,220.6 mV,223.0 mV,0.0 mV,25.000 °C
6056 2022-09-23 Lab none Calibration Lab none pH, Last cal: 7/12/2022 2:26:48 PM
EXO sn 22C103416
EXO/Sensor Firmware: 1.0.86/3.0.0
,Standard,PreCal,PostCal,RawValue,Temp
Pt1,7.00 pH,6.96 pH,7.00 pH,-4.1 mV,24.500 °C
Pt2,10.01 pH,10.15 pH,10.01 pH,-181.2 mV,24.500 °C
Pt3,4.01 pH,3.83 pH,4.02 pH,169.1 mV,24.500 °C
6012 2022-09-16 Hill Slough pH-ORP Channel Removed Lab none Removed as part of the EXO2 channel deployed in the channel at HS. Brought back to the lab for cleaning and calibration.
6009 2022-07-13 Lab none Installed Hill Slough pH-ORP Channel Installed as part of the EXO2 sonde at HS in the channel off of the boardwalk, about 30m east of the tower.
6052 2022-07-12 Lab none Calibration Lab none pH, Last cal: Unknown
EXO sn 22C103416
EXO/Sensor Firmware: 1.0.86/3.0.0
Slope is lower than what it should be for a new sensor,Standard,PreCal,PostCal,RawValue,Temp
Pt1,7.00 pH,7.02 pH,7.00 pH,-1.4 mV,20.000 °C
Pt2,10.00 pH,9.89 pH,10.00 pH,-167.8 mV,20.000 °C
Pt3,4.00 pH,4.39 pH,4.02 pH,151.1 mV,20.000 °C