{"product_id":"soil-ph-meter-pce-228s","title":"Soil pH-Meter PCE-228S","description":"Soil pH Meter PCE-228S \u003cbr\u003eThe soil pH meter PCE-228S is used to measure the soil pH value. The pH and temperature can be stored directly on the SD card. The special pH electrode of the pH meter PCE-228S is manufactured so that it is possible to measure with the pH meter in loosened soil. Temperature compensation is either manual or automatic via the supplied temperature sensor.\u003cbr\u003ePlease always make sure that the measuring principle requires a minimum residual moisture in the soil. Thus, this soil pH meter is the ideal solution for the accurate measurement of soil pH, in substrates, for horticultural irrigation solutions used in greenhouses and also in agricultural products and plants. \u003cbr\u003eThe meter is always factory calibrated. A continuous recalibration of the pH meter is carried out by means of the supplied calibration standards (buffer solutions). The calibration data remains stored when the battery is changed. In general, you can simply pierce the electrode into the ground and read the pH directly on the digital display. If you would like to carry out a measurement according to DIN or if you can not penetrate deep enough into the soil due to soil hardness, then you should prepare a DIN soil solution and use it for the exact measurement.\u003cbr\u003e Application Gardeners \u003cbr\u003eProfessional gardeners as well as environmentalists know how much depends on the condition of the soil. Depending on its composition it may be very fertile, or absolutely inappropriate for cultivation. pH level (acidity) of the soil, together with the temperature, moisture content and of course amount of light determine the quality of the soil, in the garden, on the fields, in the greenhouses, winter gardens, on the terrace, flowers beds or in the pots at home. pH meter with a thin electrode is applicable anywhere where pH value of a soil sample should be measured. Due to the thin long tip, penetrating the soil is very easy, and the measurement is immediate. The results indicate whether certain measures should be taken to change a too acidic or too alkalic medium in the soil and to adjust it in correspondence with the plans that are growing or will be growing in the soil. Not all kinds of plants require the same soil. And there is no ideal standard which all the gardeners should strive for. Neutral pH for soil is between 6.5 to 7, but there are many agricultural cultures that need 6 and even 5. A correctly prepared soil sample is sufficient for getting a reliable result and making a conclusion about the soil condition. Electrode should be handled with care and possible not applied in the sample with stones or rock particles, since it may damage the glass. Correct cleaning after measuring procedure and storage allow to apply the same electrode over a longer time period.\u003cbr\u003e The Importance of the Soil pH In Agriculture \u003cbr\u003eThe pH value of the soil is undoubtedly one of the factors that has a decisive influence on the yield of any crop, along with the other more obvious and known factors important for the plants, such as the availability of water or the nutrient content. The matter is that the pH value of a soil may cause that certain nutrients and trace elements essential for a particular crop are present in such a form that are better absorbed by the plant, or vice versa: an inadequate or not properly controlled soil pH value, can cause that nutrients which have initially been available in the soil, or which the farmer has subsequently added by means of fertilization, are present in the form of a chemical compound not absorbable by the plant, and consequently, the plant does not develop optimally. For this reason, as well as because of the inefficient use of expensive fertilizers, the profitability of the farmer can be seriously jeopardized if he does not control the pH of the soil with an accurate pH meter, which allows him making the pertinent corrective decisions in each particular case. There are several known agronomic techniques that allow correcting the pH of the soil and adapting it to the optimal conditions for the crop. It must be taken into account that for each crop there is the most suitable range of the soil pH value, within which it is convenient and recommended to work in order to reach the optimum yield. Although, as a rule, the majority of the agricultural crops yield better in the soils with the pH close to neutral or slightly acid, there are crops that are adapted and especially indicated for more acidic or more basic soils, different from the neutral pH.\u003cbr\u003e pH Value Measurement in Soil \u003cbr\u003eThe soil pH is a distinctive mark of its acid or base content. The pH of a soil, as in all the other aqueous systems, is affected by natural buffer systems. The determination takes place either in a suspension (extraction procedure) of soil in a neutral salt solution (0.01 N calcium chloride or potassium chloride) - lab measurement method. Here, since the absorbed H + ions are replaced by the CaCl2-ions, the pH measured in such a way is about 0.3-1.0 units below the pH, which is measured in purely aqueous suspensions. However, not all the data in the literature are corrected accordingly. \u003cbr\u003e Practical example: pH measurement in soil with a soil extraction solution - Laboratory measurement method according to DIN 19684 Part 1 \u003cbr\u003e between pH 2 to pH 9\u003cbr\u003e PCE-228\u003cbr\u003e pH electrode with spherical membrane, refillable or gel-filled, fabric or ceramic diaphragm\u003cbr\u003e Required equipment 1 electrode stand\u003cbr\u003e                                    1 large-volume beaker (\u0026gt;500 ml),\u003cbr\u003e                                    1 magnetic or glass rod for stirring\u003cbr\u003e Carrying out a pH measurement - experimental method: \u003cbr\u003eMake the soil mix sample (air-dry clay) taken from various representative sampling probes. Remove foreign bodies (inter alia stones, roots). Slightly loosen the soil with hands.\u003cbr\u003e Suspension with distilled water as the solvent \u003cbr\u003eThis method detects the normal acidity of the soil. The existing bound acid ions present in the soil matrix are not detected.\u003cbr\u003e Put 260 ml of distilled water to 100 g of a soil mix sample and stir \/ shake this suspension for 5 minutes. After this, the sample is left still for minimum 2 hours, but not longer than 24 hours. \u003cbr\u003e Suspension with 0.01 M CaCl2 solution \u003cbr\u003eTake 75 ml of soil and mix it with 300 ml of 0.01 M CaCl2 solution (0.01 M = 1.11 g of anhydrous calcium chloride or 1.47 g CaCl2 * 2 H2O for 1 liter distilled water), stir very intensely and let it stand without stirring for at least 60 minutes. Stir the sample shortly before the measurement and immerse the pH electrode and temperature into the fluid to be measured.\u003cbr\u003e The suspension with 0.01 M CaCl2 solution the easily replaceable hydrogen ions are also incidentally detected, as these are exchanged from the bound sample matrix by the cations. This determination method is very close to the longer-term process in the soil. That is why, the pH of this suspension is 0.5 to 1.0 pH units lower than the pH of the aqueous soil suspensions. Take a note of the measurement value with 0.01 pH accuracy when the measured value is constant.\u003cbr\u003e Measured value indication in suspension: \u003cbr\u003e- With distilled water: pH (distilled water) x.xx (y ° C) pH (distilled water) 7.22 (23 ° C)\u003cbr\u003e - With CaCl2: pH (CaCl2) x.xx (y ° C) pH (CaCl2) 7.22 (23 ° C) \u003cbr\u003ePlease note that during any pH measurement the temperature constancy between the liquid under measurement and the electrode can take place. Finally, after the measurement clean the pH electrode of contaminants by rinsing with distilled water. pH sensor should not be affected mechanically. Then keep the electrode in (STORAGE-Solution).\u003cbr\u003e PCE Instruments offers:\u003cbr\u003e pH calibration solutions: PCE-PH47-x pH4,00 and pH 7.00 in the bottle sizes x = 250 \u003cbr\u003eand x = 500 \u003cbr\u003eSTORAGE Solution: PCE SSO 500 Storage solution for pH sensors \u003cbr\u003eMagnetic stirrer: PCE-MSR 100 or PCE-MSR 110 \u003cbr\u003eDepending on soil testing method (DIN 19684 Part 1.2 \/ 77, ISO 10390) the amount \/ volume of sample and added extraction solution vary. \u003cbr\u003e Practical example: pH measurement in soil - direct measurement method \u003cbr\u003e between pH 2 to pH 9\u003cbr\u003e PCE PH20S or PCE-228 with pH electrode PCE-PH-ES\u003cbr\u003e or similar pH electrode with a conical membrane, refillable or gel filled with ceramic diaphragm\u003cbr\u003e 1 soil test solution\u003cbr\u003e 1 stick for hole making, \u003cbr\u003e Carrying out a pH measurement - Experimental method: \u003cbr\u003eDrill the soil approximately 20 cm deep and loosen it slightly. Remove the hard objects (for example, stones) out of the drill hole. In case of dry soil \/ ground moisten it with a few ml of a soil test solution.\u003cbr\u003e Put the pH electrode and the temperature sensor into the wet drilling opening until the diaphragm is completely covered with a moist soil sample.\u003cbr\u003e Take a record of a measurement rounded with 0.1 pH accuracy record when the measured value is constant.\u003cbr\u003e Measured value indication: pH x.x (y°C) for example, pH 7.2 (23°C)\u003cbr\u003e Please note that during any pH measurement the temperature constancy between the liquid under measurement and the electrode can take place.\u003cbr\u003e Finally, after the measurement clean the pH electrode of contaminants by rinsing with distilled water. pH sensor should not be affected mechanically. Then keep the electrode in STORAGE-Solution. \u003cbr\u003e Note \u003cbr\u003eIn case of this measuring method it goes about local detection of soil pH. It is therefore appropriate to conduct the pH measurement at several different insertion sites to detect the natural metric differences of the soil. The pH of a soil affects the absorption of nutrients and the presence of microorganisms.\u003cbr\u003e Particularly in wet peat with the decomposition stage \u0026gt;H6 \/ H7, it is recommended to carry out the pH measurement according to the extraction – laboratory measurement methods. \u003cbr\u003e Preferred pH range of different plant species \u003cbr\u003eFRUIT PLANTS\u003cbr\u003e Apple 5-6,5 \u003cbr\u003e Appricot 6-7 \u003cbr\u003e Pear 6-7,5 \u003cbr\u003e Grapefruit 6-7,5 \u003cbr\u003e Pomegranate 5,5-6,5 \u003cbr\u003e Grapevine 6-7 \u003cbr\u003e Cherry 6-7,5\u003cbr\u003e Lemon 6-7\u003cbr\u003e Peach 6-7,5 \u003cbr\u003e Plum 6-7,5 \u003cbr\u003e Walnut 6-8 \u003cbr\u003e Orange 5-7\u003cbr\u003e Nectarine 6-7,5\u003cbr\u003e VEGETABLES AND HERBS\/ SPICES\u003cbr\u003e Artichokes 6,5-7,5\u003cbr\u003e Pepper 6-7\u003cbr\u003e Asparagus 6-8 \u003cbr\u003e Tomatoes, early 4,5-6\u003cbr\u003e Barley 6-7 \u003cbr\u003e Tomatoes, late 4,5-6\u003cbr\u003e Beans 6-7,5 \u003cbr\u003e Brussels sprouts 6-7,5 \u003cbr\u003e Pumpkin 5,5-7,5 \u003cbr\u003e Carrots, early 5,5-7 \u003cbr\u003e Rice 5-6,5\u003cbr\u003e Carrots, late 5,5-7\u003cbr\u003e Soybeans 5,5-6,5 \u003cbr\u003e Cucumber 5,5-7,5 \u003cbr\u003e Spinach 6-7,5 \u003cbr\u003e Aubergine 5,5-7 \u003cbr\u003e Strawberries 5-7,5\u003cbr\u003e Lettuce, Pflücksalat 6-7 \u003cbr\u003e Corn 6-7,5 \u003cbr\u003e Sugar beet 6-7\u003cbr\u003e Melons 5,5-6,\u003cbr\u003e Onions 6-7 \u003cbr\u003e Water melons 5,5-6,5\u003cbr\u003e Grass, general 6-7,5 \u003cbr\u003eGARDEN PLANTS AND FLOWERS\u003cbr\u003e Acacia 6-8 \u003cbr\u003e Privet 5-7,5\u003cbr\u003e Bear Claw 6-7\u003cbr\u003e Magnolia 5-6\u003cbr\u003e Amarant 6-6,5 \u003cbr\u003e Daffodils 6-8,5\u003cbr\u003e Bougainvillea 5,5-7,5 \u003cbr\u003e Oleander 6-7,5\u003cbr\u003e Dahlias 6-7,5\u003cbr\u003e Erika 4,5-6\u003cbr\u003e Rose plant 5,5-7,5 \u003cbr\u003e Fuchsia 5,5-7,5\u003cbr\u003e Primroses 6-7,5\u003cbr\u003e Enzian 5-7,5 \u003cbr\u003e Rhododendron 4,5-6 \u003cbr\u003e Gladioli 6-7 \u003cbr\u003e Roses 5,5-7\u003cbr\u003e Hellebore 6-7,5 \u003cbr\u003e Stonecrop 6-7,5\u003cbr\u003e Hyacinth 6,5-7,5\u003cbr\u003e Sunflowers 5-7 \u003cbr\u003e Iris 5-6,5\u003cbr\u003e Tulip 6-7\u003cbr\u003e Wacholder 5-6,5\u003cbr\u003e Violet 5,5-6,5","brand":"IDL","offers":[{"title":"1 piece","offer_id":56336272654668,"sku":"PCE228S","price":300.75,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0955\/4827\/7068\/files\/946-pce-instruments-v659eb52f84cc2dfa_7b700a0f-7271-43c3-89b4-465de8c01ec7.png?v=1766876759","url":"https:\/\/www.luminixhealth.com\/en-nl\/products\/soil-ph-meter-pce-228s","provider":"Luminix Health","version":"1.0","type":"link"}