{"product_id":"hi-99121-waterproof-ph-temperature-meter-for-direct-measurement-in-soil","title":"HI-99121 Waterproof pH \u0026 temperature meter for direct measurement in soil","description":"\u003ch3\u003eMain features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSimultaneous pH and temperature measurements on a large dual-line LCD display\u003c\/li\u003e\n\u003cli\u003eAutomatic pH calibration at one or two points within two memorised buffer sets (standard or NIST)\u003c\/li\u003e\n\u003cli\u003eSelectable temperature unit (°C or °F)\u003c\/li\u003e\n\u003cli\u003eElectrode condition indicator\u003c\/li\u003e\n\u003cli\u003emV or pH measurement for electrode check\u003c\/li\u003e\n\u003cli\u003eHI-12923 dedicated pH probe with integrated temperature sensor\u003c\/li\u003e\n\u003cli\u003eProbe quick connect system\u003c\/li\u003e\n\u003cli\u003eBattery life indication and low battery detection\u003c\/li\u003e\n\u003cli\u003eKeystroke confirmation tone\u003c\/li\u003e\n\u003cli\u003eAuto-off function\u003c\/li\u003e\n\u003cli\u003eWaterproof casing IP67\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eAbout Soil pH\u003c\/h3\u003e\n\u003cp\u003epH is the measure of the hydrogen ion concentration (H+). The pH scale goes from 0 (very acidic) to 14 (basic) with pH 7 being neutral. Soil can be acid, neutral or alkaline.\u003c\/p\u003e\n\u003cp\u003eMost plants prefer a pH range from 5.5 to 7.5; but some species prefer more acid or alkaline soils. Nevertheless, every plant has a target for optimum growth.\u003c\/p\u003e\n\u003cp\u003epH strongly influences the availability of nutrients and the presence of micro-organisms and plants in the soil.\u003c\/p\u003e\n\u003cp\u003eFor example, fungi prefer acidic conditions whereas most bacteria, especially those supplying nutrients to the plants, have a preference for moderately acidic or slightly alkaline soils. In fact, in strongly acidic conditions, nitrogen fixing and the mineralisation of vegetable residual is reduced. Plants absorb the nutrients dissolved in the soil water and the nutrient solubility depends largely on the pH value. Hence, the availability of elements is different at varying pH levels.\u003c\/p\u003e\n\u003cp\u003eEach plant needs elements in different qualities and this is the reason why each plant requires a particular range of pH to optimise its growth.\u003c\/p\u003e\n\u003cp\u003eFor example, iron, copper and manganese are not soluble in an alkaline environment. This means that plants needs these elements should theoretically be in an acidic type of soil. Nitrogen, phosphorus, potassium and sulphur, on the other hand, are readily available in a pH range close to neutrality.\u003c\/p\u003e\n\u003cp\u003eAbnormal pH values may increase the concentration of toxic elements for plants. For example, a plant may not tolerate an excess of aluminium ions that may increase under acidic conditions. When pH values are too far from neutral conditions a less permeable and more compact soil may result.\u003c\/p\u003e\n\u003cp\u003eDifferent naturally occurring minerals may affect soil pH in the same way.\u003c\/p\u003e\n\u003ch3\u003eSupplied with:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHI-12923 pH\/temperature probe with conical tip, DIN Connector and 1m cable\u003c\/li\u003e\n\u003cli\u003eHI-70004 pH 4.01 buffer (1 sachet)\u003c\/li\u003e\n\u003cli\u003eHI-70007 pH 7.01 buffer (1 sachet)\u003c\/li\u003e\n\u003cli\u003eHI-700663 cleaning solution for soil deposits (1 sachet)\u003c\/li\u003e\n\u003cli\u003eHI-700664 cleaning solution for humus deposits (1 sachet)\u003c\/li\u003e\n\u003cli\u003eHI-7051M soil sample preparation solution\u003c\/li\u003e\n\u003cli\u003eHI-721319 auger for ground penetration, packed separately in a carton box\u003c\/li\u003e\n\u003cli\u003ebeaker (1)\u003c\/li\u003e\n\u003cli\u003e1.5 AAA alkaline batteries\u003c\/li\u003e\n\u003cli\u003eInstrument quality certificate\u003c\/li\u003e\n\u003cli\u003eElectrode quality certificate\u003c\/li\u003e\n\u003cli\u003eInstruction manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe electrode, auger \u0026amp; soil prep solution explained\u003c\/h3\u003e\n\u003cp\u003eHI-12923 has a conical rugged tip. It has a built-in temperature probe for temperature compensated pH readings and an integrated pre-amplifier to provide measurements impervious to noise and electrical interferences.\u003c\/p\u003e\n\u003cp\u003eThe HI-721319 auger for ground penetration is supplied to loosen the soil prior to any measurements being taken. The use of the auger is recommended to prevent scratching to the pH glass.\u003c\/p\u003e\n\u003cp\u003eFor best results, it is recommended that soil tests be carried out using a prepared soil slurry using the HI-7051 soil sample preparation solution, rather than direct ‘in the field’ measurements - although this is possible following the instructions and use of the included auger.\u003c\/p\u003e\n\u003ch3\u003eOptimum pH values for growers\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eOrchard plants, vegetables and herbaceous cultivations\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003ePreferred pH Range\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e4.5 to 6 pH - potatoes\u003c\/li\u003e\n\u003cli\u003e5 to 6.5 pH – Apples, rice\u003c\/li\u003e\n\u003cli\u003e5.5 to 6 pH – Sweet potatoes\u003c\/li\u003e\n\u003cli\u003e5.5 to 6.5 pH – Pomegranate, melon, soybean, tomatoes, watermelon\u003c\/li\u003e\n\u003cli\u003e5 to 7 pH – Orange\u003c\/li\u003e\n\u003cli\u003e5 to 7.5 pH - Strawberry\u003c\/li\u003e\n\u003cli\u003e5.5 to 7 pH – carrots, egg plant\u003c\/li\u003e\n\u003cli\u003e5.5 to 7.5 pH – cucumber, pumpkin\u003c\/li\u003e\n\u003cli\u003e6 to 7 pH – Apricot, Grapevine, lemon, barley, lettuce, oat, onion, pepper, wheat\u003c\/li\u003e\n\u003cli\u003e6 to 7.5 pH – Cherry , grapefruit, nectarine, peach, pear, plum, bean, Brussels sprouts, peas, spinach, sunflowers\u003c\/li\u003e\n\u003cli\u003e6.5 to 7.5 pH – Artichoke\u003c\/li\u003e\n\u003cli\u003e6 to 8 pH – Walnut, asparagus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eGarden plants, flowers \u0026amp; house plants\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOptimum growing pH between 4.5 and 8.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable style=\"width: 100.036%; height: 450.8px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 19.6px;\"\u003epH Range\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 19.6px;\"\u003e-2.00 to 16.00 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 19.6px;\"\u003e Temperature Range\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 19.6px;\"\u003e-5.0 to 105.0°C \/ 23.0 to 221.0°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 19.6px;\"\u003epH Resolution\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 19.6px;\"\u003e0.01 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 39.2px;\"\u003e Temperature Resolution\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 39.2px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 39.2px;\"\u003e0.1°C \/ 0.1°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 19.6px;\"\u003epH Accuracy\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 19.6px;\"\u003e±0.02 pH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 39.2px;\"\u003e Temperature Accuracy\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 39.2px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 39.2px;\"\u003e±0.5°C (up to 60°C), ±1°C (outside);\u003cbr\u003e±1.0°F (up to 140°F), ±2°F (outside)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 39.2px;\"\u003epH Calibration\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 39.2px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 39.2px;\"\u003eautomatic, 1 or 2 point with 2 sets of memorised buffer values\u003cbr\u003e(pH 4.01 \/ 7.01 \/ 10.01 or pH 4.01 \/ 6.86 \/ 9.18)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 39.2px;\"\u003eTemperature Compensation\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 39.2px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 39.2px;\"\u003eAutomatic, -5 to 105°C (23 to 221°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 78.4px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 78.4px;\"\u003epH Electrode\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 78.4px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 78.4px;\"\u003eHI 12923 preamplified pH and temperature probe with conical tip,\u003cbr\u003eDIN connector and 1 m (3.3') cable (included) - The HI-12923 is limited to be used from 0 to 12 pH and from -5 to 70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 39.2px;\"\u003eBattery Type \/ Life\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 39.2px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 39.2px;\"\u003e3 x 1.5V AAA \/ approx. 1400 hours of continuous use:\u003cbr\u003eauto-off after 8 minutes of non-use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 19.6px;\"\u003eEnvironment\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 19.6px;\"\u003e0 to 50°C (32 to 122°F); RH max 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 19.6px;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 19.6px;\"\u003e154 x 63 x 30 mm (5.9 x 3.1 x 1.4\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 19.6px;\"\u003eWeight\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 19.6px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 19.6px;\"\u003e196g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"width: 24.4118%; height: 39.2px;\"\u003eCase ingress protection rating\u003c\/td\u003e\n\u003ctd style=\"width: 0%; height: 39.2px;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 72.2014%; height: 39.2px;\"\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Hanna Instruments","offers":[{"title":"Default Title","offer_id":54505642164547,"sku":"HI-99121","price":761.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0595\/1864\/8365\/files\/1433.webp?v=1779782691","url":"https:\/\/korallifarmi.fi\/sv\/products\/hi-99121-waterproof-ph-temperature-meter-for-direct-measurement-in-soil","provider":"Korallifarmi","version":"1.0","type":"link"}