{"title":"Microscopes and More\/Lab Supplies\/pH Meters\/Pen Meters","description":null,"products":[{"product_id":"ph-meter","title":"Ohaus pH Meter","description":"\u003ch2\u003eOhaus Starter pH Pen Meters\u003c\/h2\u003e\u003cp\u003eChoose the ST10 for basic pH testing or the ST20 for pH and temperature measurement with automatic temperature compensation.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eST10\u003c\/th\u003e\n\u003cth\u003eST20\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOhaus item number\u003c\/td\u003e\n\u003ctd\u003e30073970\u003c\/td\u003e\n\u003ctd\u003e30073971\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH range\u003c\/td\u003e\n\u003ctd\u003e0.00–14 pH\u003c\/td\u003e\n\u003ctd\u003e0.00–14 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.1 pH\u003c\/td\u003e\n\u003ctd\u003e±0.05 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature measurement\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003ctd\u003e0.0–99.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature accuracy\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003ctd\u003e±0.5 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eThe ST20 features three-point calibration, automatic temperature compensation, an IP67 protection rating, and four included AG13 batteries. Both models automatically shut down after six minutes of non-use.\u003c\/p\u003e","brand":"Ohaus","offers":[{"title":"ST10","offer_id":68266124149105,"sku":"ST10","price":83.7,"currency_code":"USD","in_stock":true},{"title":"ST20","offer_id":68266124181873,"sku":"ST20","price":141.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/ph.jpg?v=1791580664"},{"product_id":"ohaus-portable-orp-meter","title":"Ohaus Portable ORP Meter","description":"\u003ch2\u003eOhaus Starter ORP Pen Meters\u003c\/h2\u003e\u003cp\u003ePortable oxidation-reduction potential (ORP) measurement with a choice of ST10R or ST20R. Both models measure from −1000 to 1000 mV. Choose ST20R for additional temperature measurement.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eST10R\u003c\/th\u003e\n\u003cth\u003eST20R\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOhaus item number\u003c\/td\u003e\n\u003ctd\u003e30073984\u003c\/td\u003e\n\u003ctd\u003e30073985\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eORP range\u003c\/td\u003e\n\u003ctd\u003e−1000 to 1000 mV\u003c\/td\u003e\n\u003ctd\u003e−1000 to 1000 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eORP accuracy\u003c\/td\u003e\n\u003ctd\u003e2 mV\u003c\/td\u003e\n\u003ctd\u003e±2 mV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003ctd\u003e0.0–99.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature accuracy\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003ctd\u003e±0.5 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ohaus","offers":[{"title":"ST10R","offer_id":68266434855281,"sku":"30073984","price":177.3,"currency_code":"USD","in_stock":true},{"title":"ST20R","offer_id":68266434888049,"sku":"30073985","price":235.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/orp_2.jpg?v=1791580687"},{"product_id":"ohaus-conductivity-meter","title":"Ohaus Conductivity Meter","description":"\u003cp\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cbr\u003eSmall but Productive Conductivity Meters\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003eStarter pen meters are the choice for basic testing needs of the total ionic concentration\u003cbr\u003ewithin a solution. With six models that can measure within three different conductivity\u003cbr\u003eranges, there is a Starter conductivity meter for every application that requires portable\u003cbr\u003eoperation and quick results.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"{{media%20url=\" wysiwyg\u003e\u003c\/p\u003e","brand":"Ohaus","offers":[{"title":"ST10C-A","offer_id":68265966272881,"sku":"ST10C-A","price":108.9,"currency_code":"USD","in_stock":true},{"title":"ST10C-B","offer_id":68265966305649,"sku":"ST10C-B","price":108.9,"currency_code":"USD","in_stock":true},{"title":"ST10C-C","offer_id":68265966338417,"sku":"ST10C-C","price":108.9,"currency_code":"USD","in_stock":true},{"title":"ST20C-A","offer_id":68265966371185,"sku":"ST20C-A","price":157.5,"currency_code":"USD","in_stock":true},{"title":"ST20C-B","offer_id":68265966403953,"sku":"ST20C-B","price":157.5,"currency_code":"USD","in_stock":true},{"title":"ST20C-C","offer_id":68265966436721,"sku":"ST20C-C","price":157.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/conductivity_6.jpg?v=1791580745"},{"product_id":"ohaus-salinity-meter","title":"Ohaus Salinity Meter","description":"\u003ch2\u003eOhaus Starter Salinity Pen Meters\u003c\/h2\u003e\u003cp\u003ePortable pen meters for measuring dissolved salt content in liquid samples. Choose ST10S for salinity measurements up to 10.0 ppt, or ST20S for an extended range up to 80.0 ppt with temperature measurement and automatic temperature compensation.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eST10S\u003c\/th\u003e\n\u003cth\u003eST20S\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOhaus item number\u003c\/td\u003e\n\u003ctd\u003e30073982\u003c\/td\u003e\n\u003ctd\u003e30073983\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity range\u003c\/td\u003e\n\u003ctd\u003e0.0–10.0 ppt\u003c\/td\u003e\n\u003ctd\u003e0.0–80.0 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity resolution\u003c\/td\u003e\n\u003ctd\u003e0.1 ppt\u003c\/td\u003e\n\u003ctd\u003e0.1 ppt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSalinity accuracy\u003c\/td\u003e\n\u003ctd\u003e±2.5% FS\u003c\/td\u003e\n\u003ctd\u003e±1.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature measurement\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003ctd\u003e0.0–99.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature accuracy\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003ctd\u003e±0.5 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutomatic temperature compensation\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003eLCD\u003c\/td\u003e\n\u003ctd\u003eLCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ohaus","offers":[{"title":"ST10S","offer_id":68266932011377,"sku":"30073982","price":108.9,"currency_code":"USD","in_stock":true},{"title":"ST20S","offer_id":68266932044145,"sku":"30073983","price":157.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/salinity_2.jpg?v=1791580773"},{"product_id":"ohaus-tds-meter","title":"Ohaus TDS Meter","description":"\u003ch2\u003eOhaus Starter TDS Pen Meters\u003c\/h2\u003e\u003cp\u003ePortable pen meters for measuring total dissolved solids (TDS) in liquid samples. Choose an A model for measurements up to 100 mg\/L or a B model for measurements up to 1000 mg\/L. ST20T models also measure temperature and feature automatic temperature compensation.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eOhaus item number\u003c\/th\u003e\n\u003cth\u003eTDS range\u003c\/th\u003e\n\u003cth\u003eTDS resolution\u003c\/th\u003e\n\u003cth\u003eTemperature measurement\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eST10T-A\u003c\/td\u003e\n\u003ctd\u003e30073978\u003c\/td\u003e\n\u003ctd\u003e0.0–100.0 mg\/L\u003c\/td\u003e\n\u003ctd\u003e0.1 mg\/L\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eST10T-B\u003c\/td\u003e\n\u003ctd\u003e30073979\u003c\/td\u003e\n\u003ctd\u003e0–1000 mg\/L\u003c\/td\u003e\n\u003ctd\u003e1 mg\/L\u003c\/td\u003e\n\u003ctd\u003eNot applicable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eST20T-A\u003c\/td\u003e\n\u003ctd\u003e30073980\u003c\/td\u003e\n\u003ctd\u003e0.0–100.0 mg\/L\u003c\/td\u003e\n\u003ctd\u003e0.1 mg\/L\u003c\/td\u003e\n\u003ctd\u003e0.0–99.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eST20T-B\u003c\/td\u003e\n\u003ctd\u003e30073981\u003c\/td\u003e\n\u003ctd\u003e0–1000 mg\/L\u003c\/td\u003e\n\u003ctd\u003e1 mg\/L\u003c\/td\u003e\n\u003ctd\u003e0.0–99.0 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003cp\u003eAll four models have an LCD display and IP67 protection rating, and are powered by four included AG13 batteries. ST10T models do not provide automatic temperature compensation. ST20T models specify accuracy of ±1.5% for TDS and ±0.5 °C for temperature.\u003c\/p\u003e","brand":"Ohaus","offers":[{"title":"ST10T-A","offer_id":68267140350321,"sku":"30073978","price":121.5,"currency_code":"USD","in_stock":true},{"title":"ST10T-B","offer_id":68267140383089,"sku":"30073979","price":121.5,"currency_code":"USD","in_stock":true},{"title":"ST20T-A","offer_id":68267140415857,"sku":"30073980","price":157.5,"currency_code":"USD","in_stock":true},{"title":"ST20T-B","offer_id":68267140448625,"sku":"30073981","price":157.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/tds_4.jpg?v=1791580885"},{"product_id":"ohaus-dissolved-oxygen-meter","title":"Ohaus Dissolved Oxygen Meter","description":"\u003ch3\u003e\n    Product Specifications\n\u003c\/h3\u003e\n\u003ctable\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Measurement Range\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0.0 – 80.0 ppt\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Measurement Resolution\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0.1 mg\/L\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Calibration\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                1 Point\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Temperature Compensation\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                Automatic\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ohaus","offers":[{"title":"Default Title","offer_id":67677139337585,"sku":"30073986","price":522.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/st20d.jpg?v=1791588470"},{"product_id":"ohaus-ph-electrode-st320","title":"Ohaus pH Electrode ST320","description":"\u003ch3\u003e\n    Product Specifications\n\u003c\/h3\u003e\n\u003ctable\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Measurement Range\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0.00 – 14 pH;\n                \u003cbr\u003e\n                0 – 80 °C\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Working Environment\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                10°C – 40°C, 85%RH, non-condensing\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Working Environment\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                50°F – 104°F, 85%RH, non-condensing\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Net Weight\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                80.0 g (2.8 oz)\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Dimensions (Length)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                120.0 mm (4.7 in)\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Shaft Material\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                Plastic\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Temperature Range\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0 °C – 80 °C\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Dimensions (2)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                12.0 mm (0.47 in)\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Electrode Type\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                pH\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Measurement Range (Temperature)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0 °C – 80 °C\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                pH measuring range\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0 – 14\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Cable (Length)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                1.1 m\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Temperature Sensor\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                30 kΩ\n                \u003cbr\u003e\n                \u003cbr\u003e\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ohaus","offers":[{"title":"Default Title","offer_id":67677216047473,"sku":"83033967","price":186.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/st320.jpg?v=1791590710"},{"product_id":"ohaus-ph-electrode-st310","title":"Ohaus pH Electrode ST310","description":"\u003ch3\u003e\n    Product Specifications\n\u003c\/h3\u003e\n\u003ctable\u003e\n    \u003ctbody\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Measurement Range\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0.00 – 14 pH;\n                \u003cbr\u003e\n                0 – 80 °C\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Working Environment\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                10°C – 40°C, 85%RH, non-condensing\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Working Environment\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                50°F – 104°F, 85%RH, non-condensing\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Net Weight\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                80.0 g (2.8 oz)\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Dimensions (2)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                12.0 mm (0.47 in)\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Dimensions (Length)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                120.0 mm (4.7 in)\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Shaft Material\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                Plastic\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Electrode Type\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                pH\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Temperature Range\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0 °C – 80 °C\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                pH measuring range\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0 – 14\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Cable (Length)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                1.1 m\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Measurement Range (Temperature)\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                0 °C – 80 °C\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd\u003e\n                Temperature Sensor\n            \u003c\/td\u003e\n            \u003ctd\u003e\n                30 kΩ\n            \u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ohaus","offers":[{"title":"Default Title","offer_id":67677216276849,"sku":"83033965","price":186.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1088\/1741\/6561\/files\/st310.jpg?v=1791590724"}],"url":"https:\/\/capitalmicroscopeservices.com\/collections\/microscopes-and-more-lab-supplies-ph-meters-pen-meters.oembed","provider":"Capital Microscope Services, Inc. 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