{"title":"Pens","description":"\u003ch2\u003ePens and Green Houses Benefits\u003c\/h2\u003e\n\u003cp\u003ePen like pH or \u003ca href=\"https:\/\/www.zenhydro.com\/ph-ppm-tds-ec\/pen.html\"\u003eTDS testers\u003c\/a\u003e are easy to use and calibrate. They are sensitive to small changes and can be carried in pocket easily to any place. EC hydroponics is good way to ensure good growth in plants, you can also compare using EC vs PPM to check what works better for your hydroponic garden. Pick from our selection of high quality, water proof pens from brands such as HM Digital and Oakton. Zenhydro offers discount pens online, waterproof hydroponic pens, EC pen, advanced nutrients PPM scale, hydroponic EC and many more. Check out today.\u003c\/p\u003e","products":[{"product_id":"oakton-waterproof-ecotestr-ph-1","title":"Oakton Waterproof EcoTestr pH 1","description":"","brand":"Oakton","offers":[{"title":"Default Title","offer_id":40808437514421,"sku":"GL56716104","price":45.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716104-01_1.jpg?v=1629885576"},{"product_id":"oakton-waterproof-ecotestr-ph-2","title":"Oakton Waterproof EcoTestr pH 2","description":"","brand":"Oakton","offers":[{"title":"Default Title","offer_id":40808437842101,"sku":"GL56716106","price":68.32,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716106-01_1.jpg?v=1629885580"},{"product_id":"oakton-waterproof-ecotestr-tds-low","title":"Oakton Waterproof EcoTestr TDS Low","description":"","brand":"Oakton","offers":[{"title":"Default Title","offer_id":40808443183285,"sku":"GL56716115","price":65.27,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716115-01_1.jpg?v=1629885598"},{"product_id":"bluelab-soil-ph-pen","title":"Bluelab Soil pH Pen","description":"","brand":"Coco-can","offers":[{"title":"Default Title","offer_id":40808459534517,"sku":"GL56716438","price":119.06,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716438-01_1.jpg?v=1629885679"},{"product_id":"bluelab-ph-pen","title":"Bluelab pH Pen","description":"\u003cp\u003eMeasures pH and temperature. Selectable units for °C \u0026amp; °F. Backlit LCD display. Double junction probe (not replaceable). Successful calibration indicator. Hold reading function and low battery warning. Fully waterproof with auto off function. Automatic temperature compensation. Along with Bluelab pH Probe KCI Solution, Bluelab pH 7 \u0026amp; Bluelab pH 4 Solution Sachets are now included. Range: 0.0 - 14.0 pH\/0-50°C\/32°-122°F. Resolution: 0.1 pH\/1°C\/1°F. Accuracy @ 25°C: ±0.1 pH. Battery type: 1 x AAA alkaline.\u003c\/p\u003e","brand":"BlueLab","offers":[{"title":"Default Title","offer_id":40808462745781,"sku":"GL56716480","price":82.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716480-01_1.jpg?v=1629885701"},{"product_id":"bluelab-ppm-pen","title":"Bluelab PPM Pen","description":"\u003cp\u003eMeasures conductivity and temperature. Selectable units for conductivity and temperature. Backlit LCD display with low battery warning. Successful calibration indicator and calibration is optional. Fully waterproof. Auto off function and hold reading function. Automatic temperature compensation. Units: EC, 500ppm, 700ppm, °C, °F. Range: 0.0 - 10.0 EC, 0-5000ppm (500ppm), 0-7000ppm (700ppm) and 0°-50°C\/32° -122°F. Resolution: 0.1 EC, 10ppm (500ppm), 10ppm (700ppm) and 1°C\/1°F. Accuracy @ 25°C: ±0.1 EC (@ 2.77 EC), ±50ppm (500ppm) (@ 1385ppm), ±70ppm (700ppm) (@ 1940ppm) and ±1°C\/±2°F. Battery type: 1 x AAA alkaline.\u003c\/p\u003e","brand":"BlueLab","offers":[{"title":"Default Title","offer_id":40808463040693,"sku":"GL56716482","price":68.39,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716482-01_1.jpg?v=1629885705"},{"product_id":"milwaukee-ph-controller","title":"Milwaukee pH Controller","description":"","brand":"Milwaukee","offers":[{"title":"Default Title","offer_id":40808471265461,"sku":"GL56716690","price":161.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716690-01_1.jpg?v=1629885758"},{"product_id":"luster-leaf-rapitest-4-way-analyzer-3-cs","title":"Luster Leaf Rapitest 4 Way Analyzer (3-Cs)","description":"\u003cspan data-mce-fragment=\"1\"\u003eRapitest 4-Way Analyzer incorporates a three (3) probe design. The unit determines soil pH (acidity\/alkalinity), fertility (combined N-P-K levels), soil moisture, and the amount of light per day in one unit. Includes instructions.\u003c\/span\u003e","brand":"Luster Leaf","offers":[{"title":"Default Title","offer_id":40808472117429,"sku":"GL56716752","price":39.79,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716752-01_1.jpg?v=1629885767"},{"product_id":"rapitest-mini-ph-tester","title":"Rapitest Mini pH Tester","description":"","brand":"Luster Leaf","offers":[{"title":"Default Title","offer_id":40808472674485,"sku":"GL56716753","price":6.3,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716753-01_1.jpg?v=1629885772"},{"product_id":"rapitest-ph-soil-tester-12-cs","title":"Rapitest pH Soil Tester (12-Cs)","description":"\u003cspan data-mce-fragment=\"1\"\u003eRapitest Soil pH Test Kit uses a patented color comparator test system. Performs ten (10) tests for soil pH. Test results allow the gardener to amend appropriately, ensuring the best possible garden results.\u003c\/span\u003e","brand":"Luster Leaf","offers":[{"title":"Default Title","offer_id":40808473395381,"sku":"GL56716755","price":8.79,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716755-01_1.jpg?v=1629885776"},{"product_id":"rapitest-soil-test-ph-n-p-k-6-cs","title":"Rapitest Soil Test pH N,P,K (6-Cs)","description":"\u003cspan data-mce-fragment=\"1\"\u003eRapitest Soil Test Kit uses a patented color comparator test system. Performs forty (40) tests, ten (10) each for soil pH, Nitrogen, Phosphorus and Potash. Test results allow the gardener to amend and fertilize appropriately, ensuring the best possible garden results.\u003c\/span\u003e","brand":"Luster Leaf","offers":[{"title":"Default Title","offer_id":40808473493685,"sku":"GL56716756","price":22.79,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716756-01_1.jpg?v=1629885783"},{"product_id":"oakton-waterproof-ecotester-ph-2","title":"Oakton Waterproof EcoTester pH 2+","description":"","brand":"Oakton","offers":[{"title":"Default Title","offer_id":40811686920373,"sku":"GL56716123","price":68.02,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716123-01.jpg?v=1629940504"},{"product_id":"hm-digital-brix-refractometer","title":"HM Digital Brix Refractometer","description":"\u003cp\u003e\u003cspan style=\"color: #ff0000;\"\u003e\u003cstrong\u003eSpecial order item; may take up to two weeks before it ships.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"HM Digital","offers":[{"title":"Default Title","offer_id":40811687510197,"sku":"GL56716139","price":231.09,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716139-01.jpg?v=1629940510"},{"product_id":"sure-test-base-ph-pen-0-3","title":"Sure Test Base pH Pen +-- 0.3","description":"","brand":"Sure Test","offers":[{"title":"Default Title","offer_id":40812171690165,"sku":"GL56716370","price":33.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716370-01_c2716bb5-e784-43af-af8b-271de7c65647.jpg?v=1629945819"},{"product_id":"sure-test-base-plus-ph-pen-0-05-atc","title":"Sure Test Base Plus pH Pen +-- 0.05 ATC","description":"","brand":"Sure Test","offers":[{"title":"Default Title","offer_id":40812171821237,"sku":"GL56716372","price":28.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716372-01.jpg?v=1629945823"},{"product_id":"sure-test-pro-ph-pen-w-replaceable-probe-0-05-atc","title":"Sure Test Pro pH Pen w- Replaceable Probe +-- 0.05 ATC","description":"","brand":"Sure Test","offers":[{"title":"Default Title","offer_id":40812171919541,"sku":"GL56716374","price":78.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716374-01.jpg?v=1629945827"},{"product_id":"sure-test-pro-ec-tds-pen","title":"Sure Test Pro EC - TDS Pen","description":"","brand":"Sure Test","offers":[{"title":"Default Title","offer_id":40812172050613,"sku":"GL56716376","price":24.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716376-01.jpg?v=1629945829"},{"product_id":"sure-test-commercial-multi-meter-w-ph-conductivity-probes-do-probe-sold-separately","title":"Sure Test Commercial Multi-Meter w- pH Conductivity Probes (DO Probe Sold Separately)","description":"","brand":"Sure Test","offers":[{"title":"Default Title","offer_id":40812172312757,"sku":"GL56716378","price":106.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716378-02.jpg?v=1629945833"},{"product_id":"sure-test-commercial-ph-ec-tds-orp-lab-meter","title":"Sure Test Commercial pH - EC - TDS - ORP Lab Meter","description":"","brand":"Sure Test","offers":[{"title":"Default Title","offer_id":40812176212149,"sku":"GL56716390","price":356.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0591\/4502\/7765\/products\/716390-01.jpg?v=1629945845"}],"url":"https:\/\/www.zenhydro.com\/zh\/collections\/pens.oembed","provider":"ZenHydro","version":"1.0","type":"link"}