Jak sprawdzić pH gleby? Papierek lakmusowy vs kwasomierz glebowy płytkowy vs miernik elektroniczny

Why do plants fail to grow, turn yellow, or wither in the garden? Often, the cause is the wrong soil pH for the plant. Most plants prefer a slightly acidic pH of 6-6.5. There are exceptions, such as blueberries, heather, and magnolias, which prefer more acidic soils, even below 5. For example, a neutral pH level is 7. So what does one degree of difference mean? The calculation formula is based on the logarithm function, and each degree represents a 10-fold increase in concentration. Therefore, 2 points equals 10 * 10, which is already a 100-fold difference. The difference in the balance of positive hydrogen ions versus negative hydroxide ions. 0:00 Litmus Paper Real litmus paper has three different colored fields – red, blue, and purple – each of which reacts within a very narrow range of the pH scale, allowing us to determine the value relatively precisely. However, the most popular are universal indicator papers, which are all one color. The problem with them is their accuracy, as the discrepancy is 1-2 pH on a simplified scale of 1-10. A pack of 100 litmus papers costs 2 złoty on Allegro, but usually 10 złoty in pharmacies. 0:32 How does a soil acid meter work? The main element is a porcelain plate with a recess in which you place a small soil sample. Then you add a few drops of the included Helig's solution to cover the sample. The solution, containing water, sodium hydroxide, and methyl red, changes from its initial green color to red upon contact with positive hydrogen ions. Then, you wait 3 minutes for the result to stabilize, and by tilting the plate to the right, you compare the color with the sample. EAN 5905620014138 40 ml bottle of Helliga liquid price PLN 7 (2023) EAN 5905620014145 complete garden acid meter set PLN 30 (2023) https://www.rimkowalczyk.pl/pl/p/Kwas... 2:03 Electronic soil pH meter - how does it work? The device can operate without batteries if it doesn't have any extra features like a backlight, because the electrodes act like a cell when placed in moist soil. One glass electrode, through which positive hydrogen cations pass, generates a very low voltage current of around 1.5V. The second electrode is a reference electrode, usually silver chloride. The voltage-calibrated indicator is calibrated to align with the pH scale. The same devices can also be made with a single probe, where the electrodes are connected concentrically, but the operating principle is the same. https://www.rimkowalczyk.pl/pl/p/Mier... 3:05 What is the pH of vinegar? - acidic? 4:14 What is the pH of soap? - alkaline? 8:38 Measuring soil pH for blueberries 11:00 Measuring soil pH for shan-tong oxytree paulownia 15:07 Umex soil for acidophilic flowers The manufacturer claims a pH of 4-5, and the plate-type soil acidometer confirmed this result. The electronic soil meter consistently shows results in the 7-6 range. However, the indicator paper is suitable for liquids and cannot measure solids. EAN 5908309740144