{"product_id":"nu-calgon-4320-w8-phase-iii-refrigerant-oil-acid-test-kit","title":"Nu-Calgon 4320-W8 Phase III Refrigerant Oil Acid Test Kit","description":"\u003ch1\u003eNu-Calgon 4320-W8 Phase III Refrigerant Oil Acid Test Kit\u003c\/h1\u003e\n\u003cp\u003eThe concentrate of acid in refrigeration oil is expressed as an acid number in mg of KOH per gram of oil (milligrams of potassium hydroxide per gram of oil). The acid number is a measure of the amount of hydroxide solution needed to neutralize the acid in the oil. The more acid there is in the oil, the more potassium hydroxide is needed to neutralize it and, so, the higher the acid number.\u003c\/p\u003e\n\u003cp\u003eIn the Phase III test, an acid number of 0.05 mg KOH per gram of oil has been set as the maximum acceptable acid concentration in mineral oil and alkylbenzene oil. In polyol esters, the number is generally accepted as 0.16 mg. Mineral and alkylbenzene oils with an acid number less than 0.05 mg or POE’s with an acid number less than 0.16 mg are acceptable and will cause no change in the color of the test kit’s acid indicator. However, if the respective oils have an acid number greater than these limits, it will cause the acid indicator to change from purple to pink or clear indicating that the oil is contaminated.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp class=\"acf-view__benefit-1\"\u003eQuickly test for acid contamination in system oil on site\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"acf-view__benefit-1\"\u003eTests acid in mineral, polyol ester, alkylbenzene, PVE \u0026amp; PAG oil\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"acf-view__benefit-1\"\u003eMost accurate on site acid test\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"acf-view__benefit-1\"\u003eQuick test that only takes about a minute\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp class=\"acf-view__benefit-1\"\u003eA2L Ready\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDIRECTIONS:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eThis product must be used in accordance to the following directions by HVACR professionals only.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Kit consists of just two bottles which contain the precise amount of solution required to conduct one test. The bottles have screw on caps, eliminating the need to break open glass. To test oil, follow this simple procedure:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003ePour the solution from the small bottle into the large bottle. The bottom layer of this mixture will be purple.\u003c\/li\u003e\n\u003cli\u003eCompletely fill the small bottle with oil from the unit being tested. Do this immediately after the oil is removed from the crankcase since exposure to air will contaminate the oil and give a false test result.\u003c\/li\u003e\n\u003cli\u003ePour the oil into the large bottle and shake well.\u003c\/li\u003e\n\u003cli\u003eWait two to three minutes. A phase separation will develop as the oil rises to the top of the mixture and an aqueous layer forms on the bottom.\u003c\/li\u003e\n\u003cli\u003eIf the bottom layer: Stays purple- the oil is satisfactory. Turns Light Pink to Clear- the oil is contaminated.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eIf the Test indicates that the oil is contaminated, the system should be drained and cleaned, then refilled with the appropriate oil of the proper viscosity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/nucalgon.com\/wp-content\/uploads\/2026\/10\/3-67_Phase3.pdf\"\u003e\u003cstrong\u003eProduct Flyer\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/nucalgon.com\/wp-content\/uploads\/2026\/10\/4320-W8_SDS_ENG_20230424.pdf\"\u003e\u003cstrong\u003eSafety Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/nucalgon.com\/product-list\/phase-iii-acid-test-kit\/\"\u003e\u003cstrong\u003eLabel\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/d90oFSSdi2Y?si=WjTfHflnbBpRr0F4\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Edmondson Supply","offers":[{"title":"Default Title","offer_id":52683860181208,"sku":"4320-W8","price":19.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0011\/6709\/7956\/files\/4320-W8_20200416-600x428.png?v=1791993595","url":"https:\/\/edmondsonsupply.com\/products\/nu-calgon-4320-w8-phase-iii-refrigerant-oil-acid-test-kit","provider":"Edmondson Supply","version":"1.0","type":"link"}