{ "page_type": "product", "item_group_id": "ELECTRODE-CLEANERS", "language": "en", "name": "Astralpool Electrode Cleaning And Calibration Solutions", "category": "Pool & Spa > Pool Construction > Salt Chlorination Systems", "category_path": "pool-spa/pool-construction/salt-chlorination-systems", "category_ids": [ 3, 7, 26 ], "brand": "AstralPool", "seller": "LordsWorld", "seller_country": "IT", "currency": "EUR", "tax_included": true, "canonical_url": "https://lordsworld.eu/en/salt-chlorination-systems/pool-electrode-cleaning-and-calibration-liquids/", "parent_type": "configurable", "summary": "Reliable Calibration with pH 4 Buffer Solution\nEnsure accurate pH measurements in your water analysis routine with the ASTRAL pH 4 Buffer Solution. Specially formulated for cleaning and calibrating electrodes, this ready-to-use solution guarantees precision and stability for all standard pH meters used in pools, spas, and laboratory testing.\nWhat is pH 4 Buffer Solution?\nThe pH 4 Buffer Solution is a stable aqueous solution with a certified pH value of 4.00 at 20°C. Used as a reference point in pH calibration, it ensures your electrode systems remain reliable and precise over time. It is one of three buffer values offered by ASTRAL to cover the full calibration spectrum: pH 4 (acidic), pH 7 (neutral), and pH 9 (alkaline).", "description": "Key Benefits\n\nAccurate and stable pH reference for calibration procedures\nPre-mixed and ready to use — no dilution or preparation needed\nCompatible with all glass and ISFET pH electrodes\nIdeal for professional and domestic water analysis\nMaintains instrument performance and measurement reliability\n\nTechnical Features\n\nBuffer Value: pH 4.00 ±0.02 at 20°C\nType: Pre-prepared liquid solution\nPackaging: Bottle with secure cap\nUse: Electrode calibration and cleaning\nCode: 70947\n\nMain Functions\nThis solution is essential for maintaining accurate and consistent pH measurements in water treatment and analysis equipment. Regular calibration with pH 4 buffer prevents drift and extends the life of your electrodes by ensuring reliable data collection.\nHow to Use It\n\nRinse the electrode with distilled water before calibration.\nImmerse the electrode in the pH 4 buffer solution.\nWait for the reading to stabilize and adjust the meter as instructed by the manufacturer.\nRepeat using pH 7 or pH 9 buffers for two- or three-point calibration.\n\nWhy Choose This Product?\nThis pH buffer is an essential tool for any water analysis system where accuracy matters. Whether you're maintaining a pool, operating a water treatment facility, or managing lab equipment, this solution offers a consistent, affordable, and trustworthy way to verify your readings.\nSafety, Storage & Eco Info\n\nStore tightly closed in a cool, dry place away from direct sunlight.\nDo not mix with other chemicals or contaminants.\nKeep out of reach of children.\nDispose of according to local regulations for non-hazardous chemical waste.\n\nFAQs\n\nQ: How often should I calibrate my pH meter?A: It is recommended to calibrate before each measurement session or at least weekly.\nQ: Can I reuse the buffer solution?A: No. Always use fresh solution for each calibration to ensure accuracy.\nQ: Does it expire?A: Yes. Always check the expiration date printed on the bottle for guaranteed stability.\n\nAvailable Variants\n\npH 4 Buffer Solution – Code 70947\npH 7 Buffer Solution – Code 70948\npH 9 Buffer Solution – Code 70949\nRedox 460 mV Calibration Solution – Code 70950\n\nLegal Note\nManufactured according to laboratory-grade quality control. Conforms to typical standards for electrochemical measurement solutions. No safety data sheet required under current EU regulations for non-hazardous liquids.\nKey Characteristics\n\nCertified pH value of 4.00 at 20°C\nImmediate-use liquid formulation\nEnsures accurate pH meter calibration\nEssential for electrode maintenance\nSafe storage and non-toxic handling\n\nNot sure if this solution is compatible with your meter? Please email us at or include your equipment details when ordering. We’ll contact you before shipping if there’s any uncertainty.", "rules": { "return_window": 14, "age_group": "adult", "age_restriction": 18, "search_enabled": true, "checkout_enabled": true }, "variants": [ { "id": "70950-ANALISI", "gtin": "0652733023728", "condition": "new", "price": 11.26, "currency": "EUR", "availability": "in_stock", "inventory": 2, "weight": 2, "dimensions": { "length": 4, "width": 4, "height": 11 }, "delivery_estimate": "3-5 Days", "shipping_rates": [], "links": { "product": "https://lordsworld.eu/en/salt-chlorination-systems/pool-electrode-cleaning-and-calibration-liquids/285", "image": "https://lordsworld.eu/1031-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "additional_images": [ "https://lordsworld.eu/2899-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1033-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1032-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg" ] } }, { "id": "70948-ANALISI", "gtin": "0652733484017", "condition": "new", "price": 8.76, "currency": "EUR", "availability": "in_stock", "inventory": 2, "weight": 2, "dimensions": { "length": 4, "width": 4, "height": 11 }, "delivery_estimate": "3-5 Days", "shipping_rates": [], "links": { "product": "https://lordsworld.eu/en/salt-chlorination-systems/pool-electrode-cleaning-and-calibration-liquids/286", "image": "https://lordsworld.eu/1031-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "additional_images": [ "https://lordsworld.eu/2899-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1033-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1032-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg" ] } }, { "id": "70949-ANALISI", "gtin": "0642613188258", "condition": "new", "price": 8.76, "currency": "EUR", "availability": "in_stock", "inventory": 132, "weight": 2, "dimensions": { "length": 4, "width": 4, "height": 11 }, "delivery_estimate": "3-5 Days", "shipping_rates": [], "links": { "product": "https://lordsworld.eu/en/salt-chlorination-systems/pool-electrode-cleaning-and-calibration-liquids/287", "image": "https://lordsworld.eu/1031-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "additional_images": [ "https://lordsworld.eu/2899-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1033-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1032-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg" ] } }, { "id": "70947-ANALISI", "gtin": "0652733252326", "condition": "new", "price": 8.76, "currency": "EUR", "availability": "in_stock", "inventory": 22, "weight": 2, "dimensions": { "length": 4, "width": 4, "height": 11 }, "delivery_estimate": "3-5 Days", "shipping_rates": [], "links": { "product": "https://lordsworld.eu/en/salt-chlorination-systems/pool-electrode-cleaning-and-calibration-liquids/284", "image": "https://lordsworld.eu/1031-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "additional_images": [ "https://lordsworld.eu/2899-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1033-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg", "https://lordsworld.eu/1032-large_default/pool-electrode-cleaning-and-calibration-liquids.jpg" ] } } ] }