{"product_id":"horiba-laqua-wq-300-series-sensor-heads-cartridges-amp-accessories","title":"Horiba LAQUA WQ-300 Series Sensor Heads, Cartridges \u0026 Accessories","description":"\u003cp\u003eSensor heads, replaceable sensor cartridges and accessories for the HORIBA LAQUA WQ-300 Series smart handheld meters (WQ-310, WQ-320 and WQ-330). Select the item you need from the dropdown.\u003c\/p\u003e\n\n\u003cp\u003eThe WQ-300 platform separates the sensor into two parts. The \u003cstrong\u003esensor head\u003c\/strong\u003e carries the cable and connector and plugs into the meter. The \u003cstrong\u003ecartridge\u003c\/strong\u003e screws into the head and contains the actual sensing element. When a pH or ion sensor reaches end of life you replace only the cartridge — the head, cable and connector stay in service. That is the main running-cost advantage of the WQ-300 series over conventional one-piece electrodes.\u003c\/p\u003e\n\n\u003ch3\u003eSensor heads\u003c\/h3\u003e\n\u003cp\u003eAvailable in 2 m and 5 m cable lengths. Choose 5 m where you need to reach into a tank, a well or across a treatment basin without moving the meter.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-PH-2 \/ 300-PH-5\u003c\/strong\u003e — pH sensor head. Takes the 300-P-C cartridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-C-2 \/ 300-C-5\u003c\/strong\u003e — conductivity sensor head. Takes the 300-4C-C or 300-2C-C cartridge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-D-2 \/ 300-D-5\u003c\/strong\u003e — optical dissolved oxygen sensor head. Self-contained; consumable is the 300-D-M sensor tip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-I-2 \/ 300-I-5\u003c\/strong\u003e — ion sensor head. Takes any of the five ISE cartridges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-O-2 \/ 300-O-5\u003c\/strong\u003e — ORP sensor head. Takes the 300-O-C cartridge.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCartridges\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-P-C\u003c\/strong\u003e — pH cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-4C-C\u003c\/strong\u003e — conductivity cartridge, 4 cells. The general-purpose choice, covering a wide conductivity span.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-2C-C\u003c\/strong\u003e — conductivity cartridge, 2 cells. For low-conductivity and ultrapure water work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-O-C\u003c\/strong\u003e — ORP cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-NH4-C\u003c\/strong\u003e — ammonium ion cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-NO3-C\u003c\/strong\u003e — nitrate ion cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-K-C\u003c\/strong\u003e — potassium ion cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-CA-C\u003c\/strong\u003e — calcium ion cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-NA-C\u003c\/strong\u003e — sodium ion cartridge\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e300-D-M\u003c\/strong\u003e — replacement sensor tip for the optical dissolved oxygen head\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAccessories\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e300 BNC\u003c\/strong\u003e — BNC adapter, lets you connect a conventional BNC ion-selective or pH electrode to a WQ-300 meter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e560-PH\u003c\/strong\u003e — pH calibration solution set, pH 4.01, 7.00 and 10.01, 60 mL each\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e560-C\u003c\/strong\u003e — conductivity calibration solution set, 84 µS\/cm, 1413 µS\/cm, 12.88 mS\/cm and 111.8 mS\/cm, 60 mL each\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoutine replacement of worn pH, ORP and ion cartridges\u003c\/li\u003e\n\u003cli\u003eAdding a new parameter to an existing WQ-320 or WQ-330 meter\u003c\/li\u003e\n\u003cli\u003eExtending reach with a 5 m cable for tanks, basins and wells\u003c\/li\u003e\n\u003cli\u003eNutrient and ion monitoring in agriculture, aquaculture and wastewater\u003c\/li\u003e\n\u003cli\u003eLow-conductivity and ultrapure water measurement with the 2-cell cartridge\u003c\/li\u003e\n\u003cli\u003eKeeping spare cartridges on hand so a failed sensor does not stop a sampling run\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDocumentation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/static.horiba.com\/fileadmin\/Horiba\/Water_Quality\/04_Support\/Brochures\/Handheld_Meters\/LOW-RES_-_ver._2.0_WQSM-08-2019D_LAQUA_WQ-300_Series_Smart_Meter.pdf\"\u003eLAQUA WQ-300 Series brochure and specifications (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/static.horiba.com\/fileadmin\/Horiba\/Water_Quality\/04_Support\/Instruction_Manuals\/Handheld_Meters\/GZ0000574030D_IM_E_WQ-300_series_June_2024.pdf\"\u003eLAQUA WQ-300 Series instruction manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eComplete WQ-300 meters and kits: \u003ca href=\"https:\/\/envirotechonline.com\/collections\/horiba\"\u003eHORIBA instruments\u003c\/a\u003e.\u003c\/p\u003e","brand":"Horiba","offers":[{"title":"300-PH-2 - pH Sensor Head, 2 m Cable - 3200812206","offer_id":48226282635454,"sku":"3200812206","price":258.0,"currency_code":"USD","in_stock":true},{"title":"300-PH-5 - pH Sensor Head, 5 m Cable - 3200812207","offer_id":48226282668222,"sku":"3200812207","price":290.0,"currency_code":"USD","in_stock":true},{"title":"300-P-C - pH Sensor Cartridge - 3200786363","offer_id":48226282700990,"sku":"3200786363","price":193.0,"currency_code":"USD","in_stock":true},{"title":"300-C-2 - Conductivity Sensor Head, 2 m Cable - 3200784468","offer_id":48226282733758,"sku":"3200784468","price":258.0,"currency_code":"USD","in_stock":true},{"title":"300-C-5 - Conductivity Sensor Head, 5 m Cable - 3200812202","offer_id":48226282766526,"sku":"3200812202","price":290.0,"currency_code":"USD","in_stock":true},{"title":"300-4C-C - Conductivity Cartridge, 4 Cells - 3200780928","offer_id":48226282799294,"sku":"3200780928","price":312.0,"currency_code":"USD","in_stock":true},{"title":"300-2C-C - Conductivity Cartridge, 2 Cells - 3200820579","offer_id":48226282832062,"sku":"3200820579","price":517.0,"currency_code":"USD","in_stock":true},{"title":"300-D-2 - Optical Dissolved Oxygen Sensor Head, 2 m Cable - 3200780940","offer_id":48226282864830,"sku":"3200780940","price":939.0,"currency_code":"USD","in_stock":true},{"title":"300-D-5 - Optical Dissolved Oxygen Sensor Head, 5 m Cable - 3200780942","offer_id":48226282897598,"sku":"3200780942","price":1000.0,"currency_code":"USD","in_stock":true},{"title":"300-D-M - Replacement Sensor Tip for Optical DO Head - 3200781554","offer_id":48226282930366,"sku":"3200781554","price":160.0,"currency_code":"USD","in_stock":true},{"title":"300-I-2 - Ion Sensor Head, 2 m Cable - 3200812203","offer_id":48226282963134,"sku":"3200812203","price":269.0,"currency_code":"USD","in_stock":true},{"title":"300-I-5 - Ion Sensor Head, 5 m Cable - 3200923560","offer_id":48226282995902,"sku":"3200923560","price":290.0,"currency_code":"USD","in_stock":true},{"title":"300-NH4-C - Ammonium Ion Sensor Cartridge - 3200986783","offer_id":48226283028670,"sku":"3200986783","price":616.0,"currency_code":"USD","in_stock":true},{"title":"300-NO3-C - Nitrate Ion Sensor Cartridge - 3200986784","offer_id":48226283061438,"sku":"3200986784","price":616.0,"currency_code":"USD","in_stock":true},{"title":"300-K-C - Potassium Ion Sensor Cartridge - 3200986785","offer_id":48226283094206,"sku":"3200986785","price":616.0,"currency_code":"USD","in_stock":true},{"title":"300-CA-C - Calcium Ion Sensor Cartridge - 3200986786","offer_id":48226283126974,"sku":"3200986786","price":616.0,"currency_code":"USD","in_stock":true},{"title":"300-NA-C - Sodium Ion Sensor Cartridge - 3200986787","offer_id":48226283159742,"sku":"3200986787","price":616.0,"currency_code":"USD","in_stock":true},{"title":"300-O-2 - ORP Sensor Head, 2 m Cable - 3200812204","offer_id":48226283192510,"sku":"3200812204","price":269.0,"currency_code":"USD","in_stock":true},{"title":"300-O-5 - ORP Sensor Head, 5 m Cable - 3200923561","offer_id":48226283225278,"sku":"3200923561","price":290.0,"currency_code":"USD","in_stock":true},{"title":"300-O-C - ORP Sensor Cartridge - 3200922104","offer_id":48226283258046,"sku":"3200922104","price":269.0,"currency_code":"USD","in_stock":true},{"title":"300 BNC - BNC Adapter for ISE Electrodes - 3200821465","offer_id":48226283290814,"sku":"3200821465","price":204.0,"currency_code":"USD","in_stock":true},{"title":"560-PH - pH Calibration Solutions 4.01\/7.00\/10.01, 60 ml - 3200820791","offer_id":48226283323582,"sku":"3200820791","price":34.0,"currency_code":"USD","in_stock":true},{"title":"560-C - Conductivity Calibration Solutions 84uS-111.8mS, 60 ml - 3200820792","offer_id":48226283356350,"sku":"3200820792","price":53.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/csm_300-D-2_01_cc69b1e823.png?v=1785337103","url":"https:\/\/envirotechonline.com\/products\/horiba-laqua-wq-300-series-sensor-heads-cartridges-amp-accessories","provider":"EnviroTech Services","version":"1.0","type":"link"}