{"product_id":"ec-pen-calibration-fluid","title":"EC Pen Calibration Fluid","description":"\u003cp\u003e\u003cstrong\u003eConductivity standard\u003c\/strong\u003e for use in calibrating all types of nutrient meters and useful for checking the Bluelab Truncheons, though you cannot calibrate the truncheon as such it can lose accuracy when it needs a clean or resetting.\u003c\/p\u003e\u003cp\u003eTwo levels of conductivity are available, 1.41 (microSiemens\/cm) and 2.76. Both come in 300ml bottles.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCalibration of all measuring equipment should be performed weekly\u003c\/strong\u003e to ensure accuracy with critical nutrient solution measurements.\u003c\/p\u003e","brand":"Growth Technology","offers":[{"title":"2.76mS\/cm","offer_id":47704779555154,"sku":"1450","price":3.25,"currency_code":"GBP","in_stock":true},{"title":"1.41mS\/cm","offer_id":47704779587922,"sku":"1449","price":3.25,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0782\/5807\/8034\/products\/1636390876-32003400.jpg?v=1708128129","url":"https:\/\/0cf200.myshopify.com\/products\/ec-pen-calibration-fluid","provider":"Greens Horticulture","version":"1.0","type":"link"}