{"title":"Calibration solution","description":"","products":[{"product_id":"aqua-master-tools-eichflussigkeit-4","title":"Aqua Master Tools Calibration Fluid pH 4 500ml Bottle","description":"\u003ch2 data-path-to-node=\"2\"\u003eAqua Master Tools Calibration Fluid pH 4.0 (500 ml): Precision in the Acidic Range\u003c\/h2\u003e\n\u003cp data-path-to-node=\"3\"\u003eTo ensure the full accuracy of a digital pH meter, two-point calibration is essential. The \u003cb data-path-to-node=\"3\" data-index-in-node=\"129\"\u003eAqua Master Tools pH 4.0 calibration fluid\u003c\/b\u003e serves as a second reference value and is crucial for stabilizing your device's measurement curve in the acidic range. In a convenient \u003cb data-path-to-node=\"3\" data-index-in-node=\"309\"\u003e500 ml reservoir bottle\u003c\/b\u003e, it offers gardeners and professionals a reliable solution for precisely adjusting nutrient solutions and preventing deficiency symptoms.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"4\"\u003eHighlights at a glance:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003eExact Reference Value:\u003c\/b\u003e Precisely set to \u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"34\"\u003epH 4.0\u003c\/b\u003e to guarantee measurement accuracy at low pH values (ideal for hydroponics and soil).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eOptimal 2-Point Calibration:\u003c\/b\u003e In combination with the pH 7.0 solution, it allows for calibration of the \"slope\" of your electrode – for maximum reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eEconomical 500 ml Bottle:\u003c\/b\u003e The large filling volume is particularly cost-effective for users who regularly maintain their measuring devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eLaboratory Standard:\u003c\/b\u003e Highly stable buffer solution, specially developed for the requirements of modern horticulture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eLight-Protective Packaging:\u003c\/b\u003e The high-quality bottle protects the solution from light exposure, significantly extending shelf life and chemical stability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eUniversally Applicable:\u003c\/b\u003e Compatible with all pH meters, pen testers, and digital monitoring stations of all brands.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"6\"\u003eWhy pH 4.0 calibration is so important\u003c\/h3\u003e\n\u003cp data-path-to-node=\"7\"\u003eMany pH meters drift over time. While pH 7.0 defines the neutral point, pH 4.0 corrects the error rate in the acidic range, where most nutrient solutions for plants are found (typically pH 5.5 to 6.5). Without regular calibration with pH 4.0, your device may show correctly at pH 7.0, but incorrectly output 6.2 at an actual value of 5.8 – a difference that can determine the success or failure of your harvest.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"0\"\u003eApplication Tip:\u003c\/b\u003e Always rinse your meter's electrode thoroughly with distilled water between calibration steps (from pH 7.0 to pH 4.0). This prevents cross-contamination of the calibration fluids and ensures that the buffer solutions in your test vessel remain pure.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"9\"\u003eProduct Data:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eContents:\u003c\/b\u003e 500 ml\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003epH Value:\u003c\/b\u003e 4.0 (at 25 °C)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eColor:\u003c\/b\u003e Usually color-coded (red) to prevent confusion with pH 7.0.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb data-path-to-node=\"10,3,0\" data-index-in-node=\"0\"\u003eStorage:\u003c\/b\u003e Store tightly closed in a cool, dark place.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":60885215740234,"sku":null,"price":14.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/5554\/4906\/files\/amt1303-4875-de-G_709632fb-0a5f-44a2-95de-c907b9077ca4.jpg?v=1769032783"},{"product_id":"aqua-master-tools-eichflussigkeit-7","title":"Aqua Master Tools Calibration Fluid pH7 500ml Bottle","description":"\u003ch2 data-path-to-node=\"2\"\u003eAqua Master Tools Calibration Fluid pH 7.0 (500 ml): The Foundation of Your Measurement Accuracy\u003c\/h2\u003e\n\u003cp data-path-to-node=\"3\"\u003eThe pH value is one of the most critical factors in horticulture, as it directly determines which nutrients your plants can absorb. The \u003cb data-path-to-node=\"3\" data-index-in-node=\"151\"\u003eAqua Master Tools pH 7.0 Calibration Fluid\u003c\/b\u003e is a high-quality buffer solution specifically developed for the regular calibration of digital pH meters. The generous \u003cb data-path-to-node=\"3\" data-index-in-node=\"335\"\u003e500 ml storage bottle\u003c\/b\u003e is ideal for growers who value maximum precision and frequently check their devices.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"4\"\u003eHighlights at a glance:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"0\"\u003ePrecise Reference Point:\u003c\/b\u003e Exactly set to the neutral value of \u003cb data-path-to-node=\"5,0,0\" data-index-in-node=\"57\"\u003epH 7.0\u003c\/b\u003e – the most important point for any calibration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-path-to-node=\"5,1,0\" data-index-in-node=\"0\"\u003eEconomical Storage Size:\u003c\/b\u003e 500 ml content offers excellent value for money and is sufficient for numerous calibration procedures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-path-to-node=\"5,2,0\" data-index-in-node=\"0\"\u003eHigh Stability:\u003c\/b\u003e The solution is chemically buffered to remain stable for a long period even after opening.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-path-to-node=\"5,3,0\" data-index-in-node=\"0\"\u003eLaboratory-Tested Quality:\u003c\/b\u003e Aqua Master Tools stands for reliability; this solution guarantees professional results in hobby and commercial horticulture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-path-to-node=\"5,4,0\" data-index-in-node=\"0\"\u003eLight-Protected Bottle:\u003c\/b\u003e The dark bottle protects the solution from UV radiation, thus preserving the integrity of the buffer solution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-path-to-node=\"5,5,0\" data-index-in-node=\"0\"\u003eUniversal Compatibility:\u003c\/b\u003e Perfectly suited for all pH meters, whether handheld devices, continuous measuring stations, or combined measuring devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"6\"\u003eWhy pH 7.0 is indispensable\u003c\/h3\u003e\n\u003cp data-path-to-node=\"7\"\u003eMost pH meters operate with a 2-point calibration. pH 7.0 serves as the \"zero point\" from which the device calculates the slope of the measurement curve. Without exact adjustment to pH 7.0, all other measured values in the acidic range (such as pH 5.8 for hydro or pH 6.5 for soil) can be inaccurate. An incorrect pH reading often gradually leads to nutrient lockouts that can severely limit plant growth.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"0\"\u003eApplication Tip:\u003c\/b\u003e To maintain the purity of the entire 500 ml bottle, you should never calibrate directly in the bottle. Pour a small amount (approx. 20–30 ml) into a clean shot glass or a special calibration vessel. After calibration, the used fluid is discarded and \u003cb data-path-to-node=\"8\" data-index-in-node=\"296\"\u003enot\u003c\/b\u003e returned to the bottle.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"9\"\u003eProduct data:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-path-to-node=\"10,0,0\" data-index-in-node=\"0\"\u003eContent:\u003c\/b\u003e 500 ml\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-path-to-node=\"10,1,0\" data-index-in-node=\"0\"\u003epH value:\u003c\/b\u003e 7.0 (at 25 °C)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-path-to-node=\"10,2,0\" data-index-in-node=\"0\"\u003eColor:\u003c\/b\u003e Often color-coded (yellow) to avoid confusion with pH 4.0.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb data-path-to-node=\"10,3,0\" data-index-in-node=\"0\"\u003eStorage:\u003c\/b\u003e Store cool and dark for maximum durability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":60885215773002,"sku":null,"price":14.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/5554\/4906\/files\/amt1302-4874-de-G_82e81d1c-b377-4c77-8ebb-06f3b521f8ea.jpg?v=1769032784"},{"product_id":"aqua-master-tools-eichflussigkeit-1413","title":"Aqua Master Tools Calibration Fluid 1413µS 100ml Bottle","description":"\u003cp data-path-to-node=\"0\"\u003e \u003c\/p\u003e\n\u003ch2 data-path-to-node=\"2\"\u003eAqua Master Tools Calibration Fluid 1413 µS (100 ml): Precision for Your Nutrient Solution\u003c\/h2\u003e\n\u003cp data-path-to-node=\"3\"\u003eAccurate measurement of electrical conductivity (EC value) is the foundation for successful plant growth. The \u003cb data-index-in-node=\"110\" data-path-to-node=\"3\"\u003eAqua Master Tools calibration fluid with 1413 µS\/cm\u003c\/b\u003e allows you to calibrate your measuring devices quickly and with high precision. Since sensors can become inaccurate over time due to deposits and aging, this reference solution ensures that your readings always correspond to reality – for optimal nutrient supply without over or under-fertilization.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"4\"\u003eHighlights at a Glance:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"5\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,0,0\"\u003eHigh-precision standard:\u003c\/b\u003e Exactly set to \u003cb data-index-in-node=\"33\" data-path-to-node=\"5,0,0\"\u003e1413 µS\/cm (1.41 mS\/cm)\u003c\/b\u003e, the internationally recognized standard value for calibrating EC meters in horticulture.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,1,0\"\u003eLaboratory quality:\u003c\/b\u003e Manufactured under strict quality controls to ensure maximum purity and stability of the solution.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,2,0\"\u003eLong shelf life:\u003c\/b\u003e The light-protected \u003cb data-index-in-node=\"39\" data-path-to-node=\"5,2,0\"\u003e100 ml bottle\u003c\/b\u003e protects the fluid from external influences and ensures consistent reliability.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,3,0\"\u003eEasy application:\u003c\/b\u003e The handy bottle allows for direct immersion of the sensor or precise pouring into a separate container.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,4,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,4,0\"\u003eUniversally compatible:\u003c\/b\u003e Suitable for all common digital EC meters, conductivity testers, and combo meters (e.g., from Aqua Master Tools, Bluelab, or Milwaukee).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"5,5,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"5,5,0\"\u003eSafety cap:\u003c\/b\u003e Prevents leakage and contamination of the fluid during storage.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"6\"\u003eWhy Regular Calibration is Crucial\u003c\/h3\u003e\n\u003cp data-path-to-node=\"7\"\u003eThe EC value determines how much \"food\" (dissolved salts) is in your irrigation water. If your device displays an incorrect value, you risk leaf burn or stunted growth. Calibrating with the 1413 µS solution brings your device back to the zero point of accuracy. Especially when using mineral fertilizers and in hydroponic systems, regular checking every 2–4 weeks and after every sensor change is an absolute must.\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"8\"\u003eApplication tip:\u003c\/b\u003e For optimal results, the fluid should be at a temperature of \u003cb data-index-in-node=\"107\" data-path-to-node=\"8\"\u003e25 °C\u003c\/b\u003e during calibration. Pour a small amount into a separate, clean container and calibrate in it. Never pour used fluid back into the original bottle to avoid contamination.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"9\"\u003eProduct Data:\u003c\/h3\u003e\n\u003cul data-path-to-node=\"10\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,0,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"10,0,0\"\u003eContent:\u003c\/b\u003e 100 ml\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,1,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"10,1,0\"\u003eReference value:\u003c\/b\u003e 1413 µS\/cm (at 25 °C)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,2,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"10,2,0\"\u003eFormat:\u003c\/b\u003e Resealable bottle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"10,3,0\"\u003e\u003cb data-index-in-node=\"0\" data-path-to-node=\"10,3,0\"\u003eSuitability:\u003c\/b\u003e For calibrating all conductivity meters\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Aqua Master Tools","offers":[{"title":"Default Title","offer_id":60885215838538,"sku":null,"price":9.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/5554\/4906\/files\/ec-1413-kalibrierflussigkeit-100-ml-4847-de-G_7dc4009e-0fbf-4175-8d8c-753b5e68bfd6.jpg?v=1769032786"}],"url":"https:\/\/www.growzeche.de\/en\/collections\/eichfluessigkeit-kalibrierloesung.oembed","provider":"Grow Zeche","version":"1.0","type":"link"}