IOP 019B.0
Effective Date: 1/26/2017
Page 1 of 8
U.S. Fish and Wildlife Service
Marquette Biological Station
3090 Wright Street
Marquette, Michigan 49855
U.S.A.
and
U.S. Fish and Wildlife Service
Ludington Biological Station
5050 Commerce Drive
Ludington, Michigan 49431
U.S.A.
and
Department of Fisheries and Oceans
Sea Lamprey Control Centre
1219 Queen Street East
Sault Ste. Marie, Ontario P6A 2E5
Canada
INSTRUMENT OPERATING PROCEDURE
INSTRUMENT:
Multiparameter Water Quality Instrument
MODEL:
-
Pro 1020 Meter (6051020)
-
Cable (6051020)
-
Probes: pH (605101), DO (605203)
MANUFACTURER:
Yellow Springs Instrument Co., Inc. (YSI)
PRECAUTIONS:
POTENTIAL INTERFERENCES
General
–
-
Greatest accuracy is achieved if the actual samples to be measured are within 10 ˚C of the
calibration solutions.
-
Longer cable lengths introduce more error into the readings.
Dissolved oxygen
–
-
Chlorine, sulfur dioxide, nitric oxide, and nitrous oxide can affect readings by behaving like
oxygen at the membrane.
-
Static electricity may affect readings.
-
Gold Cathode - The gold cathode on the sensor must be textured properly. It may become
tarnished or plated with silver after extended periods of use.
-
Bubbles under the membrane cap will affect readings.
-
Excessive water in calibration/storage sleeve will affect calibration.
