{"product_id":"astralpool-rolachem-ph-calibration-solution-7-5-100ml-200ml","title":"Astralpool \/ Rolachem pH 7.5 Calibration Solution - 100ml, 200ml","description":"\u003ch3\u003eAstralPool \/ RolaChem pH 7.5 Calibration Solution – 100mL \u0026amp; 200mL\u003c\/h3\u003e\n\u003cp\u003eGenuine \u003cstrong\u003eAstralPool \/ RolaChem pH 7.5 calibration solution\u003c\/strong\u003e for checking and calibrating pH probes used with automatic pool and spa chemical dosing systems.\u003c\/p\u003e\n\u003cp\u003eSupplied as a genuine AstralPool \/ RolaChem part, but the solution itself is a standard \u003cstrong\u003epH 7.5 reference buffer\u003c\/strong\u003e and is not brand-specific. It can be used to calibrate pH probes from other manufacturers wherever the calibration procedure specifies a pH 7.5 reference value.\u003c\/p\u003e\n\u003cp\u003epH probes can gradually drift from their correct reading due to normal use, contamination and ageing. Calibration against a known \u003cstrong\u003epH 7.5 reference solution\u003c\/strong\u003e allows the controller to compensate for this variation and maintain more accurate pH monitoring and chemical dosing.\u003c\/p\u003e\n\u003ch3\u003eAvailable Sizes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e100mL – Fluidra \/ AstralPool Part No. 600116\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e200mL – Fluidra \/ AstralPool Part No. 600113\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSuitable For\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAstralPool RolaChem pH probes and controllers\u003c\/li\u003e\n\u003cli\u003eRolaChem RC9 \/ RC 9 combined ORP and pH controllers\u003c\/li\u003e\n\u003cli\u003eRolaChem RP9 \/ RP 9 pH controllers\u003c\/li\u003e\n\u003cli\u003eOther brands of pH probe, controller, dosing system or handheld meter calibrated against a \u003cstrong\u003epH 7.5 reference solution\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse With Other Brands of pH Probe\u003c\/h3\u003e\n\u003cp\u003epH calibration solution is a chemical reference standard rather than a branded consumable. What matters is the reference value the equipment is calibrated against, not the badge on the bottle.\u003c\/p\u003e\n\u003cp\u003eIf the manufacturer of your pH probe, controller or meter specifies calibration against a \u003cstrong\u003epH 7.5\u003c\/strong\u003e solution, this product can be used. That makes it a semi-universal pH 7.5 reference suitable for a range of pool, spa and water treatment pH sensing equipment, not only AstralPool and RolaChem.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease check the value your equipment uses.\u003c\/strong\u003e pH 7.5 is less common than pH 7.0, which is the reference value specified by many pH probes and meters. Some equipment also uses a two-point procedure requiring a second solution such as pH 4.0. Confirm the reference value stated in your calibration procedure before ordering.\u003c\/p\u003e\n\u003ch3\u003eWhy pH Probe Calibration Matters\u003c\/h3\u003e\n\u003cp\u003eAn incorrectly calibrated pH probe can cause the controller to display an inaccurate pH value. Because automatic dosing equipment relies on the probe reading when controlling acid or pH correction, an inaccurate probe can result in incorrect chemical dosing.\u003c\/p\u003e\n\u003cp\u003eRegular calibration helps confirm that the displayed pH value accurately reflects the condition being measured and can also assist when diagnosing an ageing or contaminated pH probe.\u003c\/p\u003e\n\u003ch3\u003eRolaChem RC9 Calibration\u003c\/h3\u003e\n\u003cp\u003eFor RolaChem RC9 systems, AstralPool's calibration procedure involves placing the controller into \u003cstrong\u003eManual Off\u003c\/strong\u003e, selecting \u003cstrong\u003eMAINT \u0026gt; CAL \u0026gt; pH\u003c\/strong\u003e and calibrating the pH probe against the known reference solution.\u003c\/p\u003e\n\u003cp\u003eWhen using calibration solution rather than pool water as the reference, the controller's \u003cstrong\u003eFilter Pump\u003c\/strong\u003e calibration option should be set to \u003cstrong\u003eNO\u003c\/strong\u003e. The measured value can then be adjusted to match the reference solution value of \u003cstrong\u003epH 7.5\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eFor other brands, follow the calibration procedure published by that equipment's manufacturer.\u003c\/p\u003e\n\u003ch3\u003eProduct Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference value:\u003c\/strong\u003e pH 7.5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e pH buffer \/ probe calibration solution\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e100mL Part Number:\u003c\/strong\u003e 600116\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e200mL Part Number:\u003c\/strong\u003e 600113\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e AstralPool \/ RolaChem \/ Fluidra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e pH probe and sensor calibration on pool, spa and water treatment equipment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e This is pH calibration solution. It is not ORP calibration solution and should not be used to calibrate an ORP\/chlorine probe. It is not a pH increaser or reducer and should not be added to the pool or spa.\u003c\/p\u003e\n","brand":"Heater and Spa Parts","offers":[{"title":"100ml 7.5 pH Calibration Solution","offer_id":48396814680253,"sku":"600116","price":55.0,"currency_code":"AUD","in_stock":true},{"title":"200ml 7.5 pH Calibration Solution","offer_id":48396814713021,"sku":"600113","price":110.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0372\/5253\/files\/astralpool-rolachem-ph-7-5-calibration-solution-100ml-200ml-chemicals-188.webp?v=1788762494","url":"https:\/\/heaterandspaparts.com.au\/products\/astralpool-rolachem-ph-calibration-solution-7-5-100ml-200ml","provider":"Heater and Spa Parts","version":"1.0","type":"link"}