{"product_id":"trz-antifreeze-refractometer-4-in-1-ethylene-propylene-glycol-adblue-battery-portable-handheld","title":"TRZ Antifreeze Refractometer 4‑in‑1 — Ethylene\/Propylene Glycol, AdBlue \u0026 Battery, Portable Handheld","description":"\u003cp\u003e\u003cstrong\u003eTRZ 4-in-1 Antifreeze Refractometer is a portable optical tool that quickly measures freezing point and concentration for ethylene glycol, propylene glycol, AdBlue (urea) and battery specific gravity ranges.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact handheld refractometer gives technicians, fleet managers and DIYers a fast, single-instrument method to check coolant freeze protection and fluid concentration. It displays results in °F and percent, converting refractive index readings into actionable freezing-point and concentration data for common automotive and industrial fluids.\u003c\/p\u003e\n\n\u003ch3\u003eHow does this refractometer determine freezing point and concentration?\u003c\/h3\u003e\n\u003cp\u003eThe refractometer measures the refractive index of a small fluid sample and converts that optical reading into freeze-point and percentage concentrations using built-in calibration scales. Readings are instantaneous after a drop is applied and the cover plate closed.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUses optical prism and scale calibrated to ethylene glycol and propylene glycol curves.\u003c\/li\u003e\n  \u003cli\u003eDisplays freezing-point range for ethylene glycol from -84°F to 32°F and propylene glycol from -60°F to 32°F.\u003c\/li\u003e\n  \u003cli\u003eShows concentration ranges (ethylene 0–70% vol, propylene 0–63% vol) directly on the scale.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat fluids and ranges can I test with this 4-in-1 unit?\u003c\/h3\u003e\n\u003cp\u003eThis model supports four common checks: ethylene glycol coolant, propylene glycol coolant, AdBlue\/urea concentration, and battery specific gravity approximations. Each function uses a dedicated scale printed within the viewfinder for straightforward interpretation.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEthylene glycol freezing point: -84°F to 32°F, concentration 0–70% vol.\u003c\/li\u003e\n  \u003cli\u003ePropylene glycol freezing point: -60°F to 32°F, concentration 0–63% vol.\u003c\/li\u003e\n  \u003cli\u003eAdBlue (urea) concentration detection: targeted 30–35% urea range.\u003c\/li\u003e\n  \u003cli\u003eBattery specific gravity approximate range: 1.100–1.400 sg.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow accurate and practical is it for workshop or roadside use?\u003c\/h3\u003e\n\u003cp\u003eThe refractometer is built for quick field checks where speed and portability matter more than lab-level precision. It’s ideal for spot-checking fluid condition before servicing or winterizing equipment, with a straightforward single-unit °F display and percent readouts.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePortable handheld design for garage, fleet yard, or roadside inspections.\u003c\/li\u003e\n  \u003cli\u003eRequires only a few drops of fluid and yields immediate readings.\u003c\/li\u003e\n  \u003cli\u003eDurable prism and cover plate for repeated field sampling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I prepare samples and maintain the instrument?\u003c\/h3\u003e\n\u003cp\u003eUse clean, room-temperature fluid samples and wipe the prism between uses to avoid cross-contamination. Periodically check calibration with distilled water or manufacturer calibration fluid and store the unit dry and protected from strong sunlight.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApply one or two drops on the prism, close cover plate, then read the scale.\u003c\/li\u003e\n  \u003cli\u003eWipe prism with soft lint-free cloth after each measurement.\u003c\/li\u003e\n  \u003cli\u003eVerify calibration occasionally with distilled water or a known standard.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: technicians, fleet managers, auto and agricultural mechanics, HVAC and industrial maintenance staff, and proactive vehicle owners who need a fast, portable way to assess coolant freeze protection, AdBlue concentration or battery specific gravity on the spot. It’s not a laboratory densitometer but a reliable field tool for routine checks and preventive maintenance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can this refractometer test both ethylene and propylene glycol?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It measures freezing point and concentration for ethylene glycol (-84°F–32°F, 0–70% vol) and propylene glycol (-60°F–32°F, 0–63% vol).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need a lot of fluid to take a reading?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. Only a few drops on the prism are required for an instant optical reading.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"TRZ","offers":[{"title":"Default Title","offer_id":55166724112727,"sku":"B073Q2LSG9","price":37.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/trz-front-view-refractometer.jpg?v=1790370871","url":"https:\/\/britishgarage.co.uk\/products\/trz-antifreeze-refractometer-4-in-1-ethylene-propylene-glycol-adblue-battery-portable-handheld","provider":"British Garage","version":"1.0","type":"link"}