Name: YSI ProQuatro Sensors
Brand: YSI - Xylem Inc.
SKU: 12103446
Price: 210.98 USD
Availability: InStock

Designed to work with the ProQuatro handheld and Quatro cable assemblies, these user-replaceable probes and sensors make it easy to swap worn electrodes or reconfigure your meter for new parameters without replacing the entire instrument.

Whether you’re monitoring groundwater wells, surface water, irrigation sources, or industrial discharge, selecting the correct sensor helps ensure accurate, reliable environmental data.

Looking for the complete instrument?
Visit the ProQuatro Meter & Cable page to purchase the handheld unit and cable assemblies.

Need a Flow Cell or other accessories?
Explore the ProQuatro Accessories page

Sensor and Cable Options & Compatibility Chart

$235.00 $210.98 Save $24.02

Quantity

[{"id":45759530533054,"title":"1001 - Pro Series pH Sensor (ISE) - 605101","option1":"1001 - Pro Series pH Sensor (ISE) - 605101","option2":null,"option3":null,"sku":"12103446","requires_shipping":true,"taxable":true,"featured_image":{"id":40569753305278,"product_id":8660394049726,"position":1,"created_at":"2026-01-28T15:49:22-08:00","updated_at":"2026-01-28T15:50:05-08:00","alt":"1001pH sensor designed for YSI Pro Series 10 Meter","width":795,"height":596,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_Series_1001_pH_Sensor.png?v=1769644205","variant_ids":[45759530533054]},"available":true,"name":"YSI ProQuatro Sensors - 1001 - Pro Series pH Sensor (ISE) - 605101","public_title":"1001 - Pro Series pH Sensor (ISE) - 605101","options":["1001 - Pro Series pH Sensor (ISE) - 605101"],"price":21098,"weight":0,"compare_at_price":23500,"inventory_management":null,"barcode":"","featured_media":{"alt":"1001pH sensor designed for YSI Pro Series 10 Meter","id":31725054525630,"position":1,"preview_image":{"aspect_ratio":1.334,"height":596,"width":795,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_Series_1001_pH_Sensor.png?v=1769644205"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45759530565822,"title":"1002 - Pro Series ORP Sensor (ISE) - 605102","option1":"1002 - Pro Series ORP Sensor (ISE) - 605102","option2":null,"option3":null,"sku":"12103447","requires_shipping":true,"taxable":true,"featured_image":{"id":40569870123198,"product_id":8660394049726,"position":2,"created_at":"2026-01-28T15:55:03-08:00","updated_at":"2026-01-28T15:55:57-08:00","alt":"ysi pro series 1001A amplifies ph sensor designed to be used with the ysi pro series 10 meter","width":767,"height":625,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1001A_Amplified_pH_sensor.png?v=1769644557","variant_ids":[45759530565822]},"available":true,"name":"YSI ProQuatro Sensors - 1002 - Pro Series ORP Sensor (ISE) - 605102","public_title":"1002 - Pro Series ORP Sensor (ISE) - 605102","options":["1002 - Pro Series ORP Sensor (ISE) - 605102"],"price":25228,"weight":0,"compare_at_price":28100,"inventory_management":null,"barcode":"","featured_media":{"alt":"ysi pro series 1001A amplifies ph sensor designed to be used with the ysi pro series 10 meter","id":31725170819262,"position":2,"preview_image":{"aspect_ratio":1.227,"height":625,"width":767,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1001A_Amplified_pH_sensor.png?v=1769644557"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45759530598590,"title":"1003 - Pro Series pH\/ORP Sensor (ISE) - not recommended for 605790 Quatro Cable or 6051010 ISE\/ISE\/Temp Cable - 605103","option1":"1003 - Pro Series pH\/ORP Sensor (ISE) - not recommended for 605790 Quatro Cable or 6051010 ISE\/ISE\/Temp Cable - 605103","option2":null,"option3":null,"sku":"12103448","requires_shipping":true,"taxable":true,"featured_image":{"id":40569823363262,"product_id":8660394049726,"position":3,"created_at":"2026-01-28T15:52:34-08:00","updated_at":"2026-01-28T15:53:19-08:00","alt":"The ysi pro series 1002 ORP sensor designed for use with the Pro Series 10Meter","width":792,"height":670,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_Series_1002_ORP_Sensor.png?v=1769644399","variant_ids":[45759530598590]},"available":true,"name":"YSI ProQuatro Sensors - 1003 - Pro Series pH\/ORP Sensor (ISE) - not recommended for 605790 Quatro Cable or 6051010 ISE\/ISE\/Temp Cable - 605103","public_title":"1003 - Pro Series pH\/ORP Sensor (ISE) - not recommended for 605790 Quatro Cable or 6051010 ISE\/ISE\/Temp Cable - 605103","options":["1003 - Pro Series pH\/ORP Sensor (ISE) - not recommended for 605790 Quatro Cable or 6051010 ISE\/ISE\/Temp Cable - 605103"],"price":39503,"weight":0,"compare_at_price":44000,"inventory_management":null,"barcode":"","featured_media":{"alt":"The ysi pro series 1002 ORP sensor designed for use with the Pro Series 10Meter","id":31725124223166,"position":3,"preview_image":{"aspect_ratio":1.182,"height":670,"width":792,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_Series_1002_ORP_Sensor.png?v=1769644399"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45759530631358,"title":"1004 - Pro Series Ammonium Sensor (ISE) - 605104","option1":"1004 - Pro Series Ammonium Sensor (ISE) - 605104","option2":null,"option3":null,"sku":"12103449","requires_shipping":true,"taxable":true,"featured_image":{"id":40570671530174,"product_id":8660394049726,"position":4,"created_at":"2026-01-28T16:42:58-08:00","updated_at":"2026-01-28T16:42:59-08:00","alt":null,"width":766,"height":577,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1004_Ammonium_Sensor.png?v=1769647379","variant_ids":[45759530631358]},"available":true,"name":"YSI ProQuatro Sensors - 1004 - Pro Series Ammonium Sensor (ISE) - 605104","public_title":"1004 - Pro Series Ammonium Sensor (ISE) - 605104","options":["1004 - Pro Series Ammonium Sensor (ISE) - 605104"],"price":44710,"weight":0,"compare_at_price":49800,"inventory_management":null,"barcode":"","featured_media":{"alt":null,"id":31725970817214,"position":4,"preview_image":{"aspect_ratio":1.328,"height":577,"width":766,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1004_Ammonium_Sensor.png?v=1769647379"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45759530664126,"title":"1005 - Pro Series Chloride Sensor (ISE) - 605105","option1":"1005 - Pro Series Chloride Sensor (ISE) - 605105","option2":null,"option3":null,"sku":"12103450","requires_shipping":true,"taxable":true,"featured_image":{"id":40570655080638,"product_id":8660394049726,"position":5,"created_at":"2026-01-28T16:41:18-08:00","updated_at":"2026-01-28T16:41:20-08:00","alt":null,"width":802,"height":586,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1005_Chloride_Sensor.png?v=1769647280","variant_ids":[45759530664126]},"available":true,"name":"YSI ProQuatro Sensors - 1005 - Pro Series Chloride Sensor (ISE) - 605105","public_title":"1005 - Pro Series Chloride Sensor (ISE) - 605105","options":["1005 - Pro Series Chloride Sensor (ISE) - 605105"],"price":47673,"weight":0,"compare_at_price":53100,"inventory_management":null,"barcode":"","featured_media":{"alt":null,"id":31725954367678,"position":5,"preview_image":{"aspect_ratio":1.369,"height":586,"width":802,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1005_Chloride_Sensor.png?v=1769647280"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45759530696894,"title":"1006 - Pro Series Nitrate Sensor (ISE) - 605106","option1":"1006 - Pro Series Nitrate Sensor (ISE) - 605106","option2":null,"option3":null,"sku":"12103451","requires_shipping":true,"taxable":true,"featured_image":{"id":40570637484222,"product_id":8660394049726,"position":6,"created_at":"2026-01-28T16:39:53-08:00","updated_at":"2026-01-28T16:39:54-08:00","alt":null,"width":780,"height":627,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1006_Nitrate_sensor.png?v=1769647194","variant_ids":[45759530696894]},"available":true,"name":"YSI ProQuatro Sensors - 1006 - Pro Series Nitrate Sensor (ISE) - 605106","public_title":"1006 - Pro Series Nitrate Sensor (ISE) - 605106","options":["1006 - Pro Series Nitrate Sensor (ISE) - 605106"],"price":44710,"weight":0,"compare_at_price":49800,"inventory_management":null,"barcode":"","featured_media":{"alt":null,"id":31725936771262,"position":6,"preview_image":{"aspect_ratio":1.244,"height":627,"width":780,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_series_1006_Nitrate_sensor.png?v=1769647194"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45759530729662,"title":"2002 - Pro Series Galvanic Dissolved Oxygen Sensor - 605202","option1":"2002 - Pro Series Galvanic Dissolved Oxygen Sensor - 605202","option2":null,"option3":null,"sku":"12103443","requires_shipping":true,"taxable":true,"featured_image":{"id":40570599014590,"product_id":8660394049726,"position":7,"created_at":"2026-01-28T16:35:42-08:00","updated_at":"2026-01-28T16:35:43-08:00","alt":null,"width":785,"height":667,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/ysi_2002_galvanic_DO_sensor.png?v=1769646943","variant_ids":[45759530729662]},"available":true,"name":"YSI ProQuatro Sensors - 2002 - Pro Series Galvanic Dissolved Oxygen Sensor - 605202","public_title":"2002 - Pro Series Galvanic Dissolved Oxygen Sensor - 605202","options":["2002 - Pro Series Galvanic Dissolved Oxygen Sensor - 605202"],"price":22624,"weight":0,"compare_at_price":25200,"inventory_management":null,"barcode":"","featured_media":{"alt":null,"id":31725899350206,"position":7,"preview_image":{"aspect_ratio":1.177,"height":667,"width":785,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/ysi_2002_galvanic_DO_sensor.png?v=1769646943"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45759530762430,"title":"2003 - Pro Series Polarographic Dissolved Oxygen Sensor - 605203","option1":"2003 - Pro Series Polarographic Dissolved Oxygen Sensor - 605203","option2":null,"option3":null,"sku":"12103444","requires_shipping":true,"taxable":true,"featured_image":{"id":40570633224382,"product_id":8660394049726,"position":8,"created_at":"2026-01-28T16:38:41-08:00","updated_at":"2026-01-28T16:38:42-08:00","alt":null,"width":771,"height":687,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_Series_2003_Polarographic_DO_Sensor.png?v=1769647122","variant_ids":[45759530762430]},"available":true,"name":"YSI ProQuatro Sensors - 2003 - Pro Series Polarographic Dissolved Oxygen Sensor - 605203","public_title":"2003 - Pro Series Polarographic Dissolved Oxygen Sensor - 605203","options":["2003 - Pro Series Polarographic Dissolved Oxygen Sensor - 605203"],"price":22624,"weight":0,"compare_at_price":25200,"inventory_management":null,"barcode":"","featured_media":{"alt":null,"id":31725932511422,"position":8,"preview_image":{"aspect_ratio":1.122,"height":687,"width":771,"src":"\/\/envirotechonline.com\/cdn\/shop\/files\/YSI_Pro_Series_2003_Polarographic_DO_Sensor.png?v=1769647122"}},"requires_selling_plan":false,"selling_plan_allocations":[]}]

ENVIRONMENTAL SAMPLING EQUIPMENT

YSI ProQuatro Sensors

RELATED PRODUCTS