{"title":"Water Quality \u0026 pH Testing","description":"\u003cp\u003ePortable meters, testing kits and calibration supplies for pH, conductivity and field water-quality measurements.\u003c\/p\u003e","products":[{"product_id":"extech-ph103-ph-buffer-and-rinse-pouch-kit","title":"Extech PH103 pH Buffer and Rinse Pouch Kit","description":"\u003cp\u003eThe Extech PH103 pH Buffer and Rinse Pouch Kit provides convenient, pre-measured solutions for calibrating pH meters and cleaning electrodes between samples. Each sealed pouch contains fresh solution and can be used without a separate calibration cup.\u003c\/p\u003e\u003cp\u003eThe kit includes pH 4, pH 7 and pH 10 buffers for multi-point calibration, together with rinse solution to reduce cross-contamination and support reliable measurements.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePre-measured, ready-to-use calibration solutions\u003c\/li\u003e\n\u003cli\u003eIncludes pH 4, pH 7 and pH 10 buffers\u003c\/li\u003e\n\u003cli\u003eRinse solution helps prevent cross-contamination\u003c\/li\u003e\n\u003cli\u003eIndividual pouches eliminate the need for a separate cup\u003c\/li\u003e\n\u003cli\u003eSuitable for compatible Extech and general pH meters\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRoutine pH-meter calibration\u003c\/li\u003e\n\u003cli\u003eField and laboratory water testing\u003c\/li\u003e\n\u003cli\u003eEnvironmental sample measurement\u003c\/li\u003e\n\u003cli\u003eElectrode rinsing between different solutions\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKit Contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e6 × pH 4 buffer pouches\u003c\/li\u003e\n\u003cli\u003e6 × pH 7 buffer pouches\u003c\/li\u003e\n\u003cli\u003e6 × pH 10 buffer pouches\u003c\/li\u003e\n\u003cli\u003e2 × electrode rinse-solution pouches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eImportant Information\u003c\/h2\u003e\u003cp\u003eUse fresh buffer solutions and follow the calibration procedure specified by the meter manufacturer. Rinse the electrode between different buffers and samples to reduce contamination and maintain measurement accuracy.\u003c\/p\u003e\u003ch2\u003eDelivery and Product Support\u003c\/h2\u003e\u003cp\u003eDelivery is available throughout the UK and internationally. Standard charges and estimated times are set out in our Shipping Policy. Oversized or heavy orders may require a separate delivery quotation.\u003c\/p\u003e\u003cp\u003eNeed help confirming suitability, specifications or included components? Contact us through the contact option available on this sales channel before ordering.\u003c\/p\u003e\u003ch2\u003eAvailability and Dispatch\u003c\/h2\u003e\u003cp\u003eAvailability and lead times vary by product. Some items are held in stock, while others are ordered from our suppliers. Please contact us through the contact option available on this sales channel before ordering if you require confirmation of availability or delivery times.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Geo Site Supply?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFree standard UK delivery\u003c\/li\u003e\n\u003cli\u003eWorldwide delivery available\u003c\/li\u003e\n\u003cli\u003eSecure checkout\u003c\/li\u003e\n\u003cli\u003eProduct suitability and technical support available through this sales channel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Extech","offers":[{"title":"Default Title","offer_id":54943511511382,"sku":"PH103","price":43.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0945\/3056\/8534\/files\/ph103.png?v=1786379665"},{"product_id":"extech-ph90-waterproof-ph-and-temperature-meter-1","title":"Extech PH90 Waterproof pH and Temperature Meter","description":"\u003cp\u003eThe Extech PH90 Waterproof pH and Temperature Meter is a compact field instrument with a rugged flat-surface electrode for testing liquids, semi-solids and solid materials. Unlike a conventional glass-bulb electrode, the flat sensor is less prone to breakage or blocked junctions.\u003c\/p\u003e\u003cp\u003eThe IP57-rated housing, automatic temperature measurement and replaceable sensor make the PH90 suitable for regular field or laboratory use where fast pH checks are required.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMeasures pH and temperature simultaneously\u003c\/li\u003e\n\u003cli\u003eFlat-surface electrode for liquids, semi-solids and solids\u003c\/li\u003e\n\u003cli\u003eRugged alternative to traditional glass-bulb electrodes\u003c\/li\u003e\n\u003cli\u003eReplaceable sensor module\u003c\/li\u003e\n\u003cli\u003eCompact IP57 waterproof housing\u003c\/li\u003e\n\u003cli\u003e0.01 pH maximum resolution\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSoil and material pH screening\u003c\/li\u003e\n\u003cli\u003eEnvironmental water-quality checks\u003c\/li\u003e\n\u003cli\u003eFood, laboratory and process testing\u003c\/li\u003e\n\u003cli\u003eField testing of liquids and semi-solid samples\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003epH range:\u003c\/strong\u003e 0.00 to 14.00 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH resolution:\u003c\/strong\u003e 0.01 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 0°C to 90°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngress protection:\u003c\/strong\u003e IP57\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 2 × CR2032 batteries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e approximately 85g\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat You Receive\u003c\/h2\u003e\u003cp\u003eOne Extech PH90 Waterproof pH and Temperature Meter with flat-surface electrode, protective cap and batteries.\u003c\/p\u003e\u003ch2\u003eDelivery and Product Support\u003c\/h2\u003e\u003cp\u003eDelivery is available throughout the UK and internationally. Standard charges and estimated times are set out in our Shipping Policy. Oversized or heavy orders may require a separate delivery quotation.\u003c\/p\u003e\u003cp\u003eNeed help confirming suitability, specifications or included components? Contact us through the contact option available on this sales channel before ordering.\u003c\/p\u003e\u003ch2\u003eAvailability and Dispatch\u003c\/h2\u003e\u003cp\u003eAvailability and lead times vary by product. Some items are held in stock, while others are ordered from our suppliers. Please contact us through the contact option available on this sales channel before ordering if you require confirmation of availability or delivery times.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Geo Site Supply?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFree standard UK delivery\u003c\/li\u003e\n\u003cli\u003eWorldwide delivery available\u003c\/li\u003e\n\u003cli\u003eSecure checkout\u003c\/li\u003e\n\u003cli\u003eProduct suitability and technical support available through this sales channel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Extech","offers":[{"title":"Default Title","offer_id":54943512199510,"sku":"PH90","price":107.85,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0945\/3056\/8534\/files\/ph90.png?v=1786379635"},{"product_id":"extech-ec500-waterproof-ph-conductivity-meter","title":"Extech EC500 Waterproof pH\/Conductivity Meter","description":"\u003cp\u003eThe Extech EC500 Waterproof pH\/Conductivity Meter combines five water-quality measurements in one compact handheld instrument. Using a single replaceable electrode, it measures pH, conductivity, total dissolved solids, salinity and temperature for rapid field or laboratory assessment.\u003c\/p\u003e\u003cp\u003eThe IP57-rated housing is suited to demanding working environments, while automatic ranging, an analogue bar graph and storage for up to 25 datasets support repeatable testing and straightforward result comparison.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMeasures pH, conductivity, TDS, salinity and temperature\u003c\/li\u003e\n\u003cli\u003eSingle combination electrode for all five parameters\u003c\/li\u003e\n\u003cli\u003eStores up to 25 labelled datasets\u003c\/li\u003e\n\u003cli\u003eAnalogue bar graph indicates changing measurement trends\u003c\/li\u003e\n\u003cli\u003eCompact IP57 waterproof housing\u003c\/li\u003e\n\u003cli\u003eReplaceable electrode module\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eGroundwater and surface-water screening\u003c\/li\u003e\n\u003cli\u003eEnvironmental and hydrogeological surveys\u003c\/li\u003e\n\u003cli\u003eWater-treatment and process checks\u003c\/li\u003e\n\u003cli\u003eLaboratory and field water-quality testing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003epH range:\u003c\/strong\u003e 0.00 to 14.00 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH accuracy:\u003c\/strong\u003e ±0.01 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductivity ranges:\u003c\/strong\u003e 0–199µS\/cm, 200–1999µS\/cm and 2.00–19.99mS\/cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e -5°C to 90°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngress protection:\u003c\/strong\u003e IP57\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 4 × CR2032 batteries\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhat You Receive\u003c\/h2\u003e\u003cp\u003eOne Extech EC500 Waterproof ExStik II pH\/Conductivity Meter with combination electrode and batteries.\u003c\/p\u003e\u003ch2\u003eDelivery and Product Support\u003c\/h2\u003e\u003cp\u003eDelivery is available throughout the UK and internationally. Standard charges and estimated times are set out in our Shipping Policy. Oversized or heavy orders may require a separate delivery quotation.\u003c\/p\u003e\u003cp\u003eNeed help confirming suitability, specifications or included components? Contact us through the contact option available on this sales channel before ordering.\u003c\/p\u003e\u003ch2\u003eAvailability and Dispatch\u003c\/h2\u003e\u003cp\u003eAvailability and lead times vary by product. Some items are held in stock, while others are ordered from our suppliers. Please contact us through the contact option available on this sales channel before ordering if you require confirmation of availability or delivery times.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Geo Site Supply?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFree standard UK delivery\u003c\/li\u003e\n\u003cli\u003eWorldwide delivery available\u003c\/li\u003e\n\u003cli\u003eSecure checkout\u003c\/li\u003e\n\u003cli\u003eProduct suitability and technical support available through this sales channel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Extech","offers":[{"title":"Default Title","offer_id":54943512265046,"sku":"EC500","price":214.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0945\/3056\/8534\/files\/ec500.png?v=1786379626"},{"product_id":"extech-ph300-waterproof-ph-mv-temperature-kit","title":"Extech PH300 Waterproof pH\/mV\/Temperature Kit","description":"\u003cp\u003eThe Extech PH300 Waterproof pH\/mV\/Temperature Kit is a complete portable system for measuring pH, oxidation-reduction potential and temperature at the workbench or in the field. Automatic one-button calibration and temperature compensation help deliver consistent results across a wide range of samples.\u003c\/p\u003e\u003cp\u003eUp to 200 readings can be stored with their sequence number, measured value and temperature. The large blue backlit display and IP57 housing make the instrument practical for environmental, laboratory and process applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eMeasures pH, mV and temperature\u003c\/li\u003e\n\u003cli\u003eAutomatic one-button calibration at pH 4, 7 and 10\u003c\/li\u003e\n\u003cli\u003eChoice of up to three calibration points\u003c\/li\u003e\n\u003cli\u003eAutomatic temperature compensation\u003c\/li\u003e\n\u003cli\u003eMemory for up to 200 readings\u003c\/li\u003e\n\u003cli\u003eLarge blue backlit LCD\u003c\/li\u003e\n\u003cli\u003eIP57 waterproof housing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTypical Applications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEnvironmental water and groundwater testing\u003c\/li\u003e\n\u003cli\u003eLaboratory pH and ORP measurement\u003c\/li\u003e\n\u003cli\u003eWater-treatment and process monitoring\u003c\/li\u003e\n\u003cli\u003eField investigation and sample screening\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specification\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003epH range:\u003c\/strong\u003e -2.00 to 19.00 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003epH accuracy:\u003c\/strong\u003e ±0.02 pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003emV range:\u003c\/strong\u003e -1999mV to 1999mV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 0°C to 100°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMemory:\u003c\/strong\u003e 200 readings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIngress protection:\u003c\/strong\u003e IP57\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKit Contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExtech PH300 meter\u003c\/li\u003e\n\u003cli\u003epH\/mV\/temperature electrode\u003c\/li\u003e\n\u003cli\u003eProtective rubber holster\u003c\/li\u003e\n\u003cli\u003epH 4, 7 and 10 calibration solutions\u003c\/li\u003e\n\u003cli\u003eTwo AA batteries\u003c\/li\u003e\n\u003cli\u003eHard carrying case\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDelivery and Product Support\u003c\/h2\u003e\u003cp\u003eDelivery is available throughout the UK and internationally. Standard charges and estimated times are set out in our Shipping Policy. Oversized or heavy orders may require a separate delivery quotation.\u003c\/p\u003e\u003cp\u003eNeed help confirming suitability, specifications or included components? Contact us through the contact option available on this sales channel before ordering.\u003c\/p\u003e\u003ch2\u003eAvailability and Dispatch\u003c\/h2\u003e\u003cp\u003eAvailability and lead times vary by product. Some items are held in stock, while others are ordered from our suppliers. Please contact us through the contact option available on this sales channel before ordering if you require confirmation of availability or delivery times.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Geo Site Supply?\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFree standard UK delivery\u003c\/li\u003e\n\u003cli\u003eWorldwide delivery available\u003c\/li\u003e\n\u003cli\u003eSecure checkout\u003c\/li\u003e\n\u003cli\u003eProduct suitability and technical support available through this sales channel\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Extech","offers":[{"title":"Default Title","offer_id":54943516098902,"sku":"PH300","price":334.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0945\/3056\/8534\/files\/ph300.png?v=1786379651"}],"url":"https:\/\/www.geositesupply.com\/collections\/water-quality-ph-testing.oembed","provider":"Geo Site Supply ","version":"1.0","type":"link"}