{"product_id":"vee-gee-45000-os025-oil-refractometer-standard-60-brix-nist-traceable","title":"VEE GEE 45000-OS025 Oil-Based Refractometer Standard, 60.0% Brix, 1.4400 nD, NIST Traceable | 7.4 mL - Made in USA","description":"\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eVEE GEE 45000-OS025 is an oil-based refractometer calibration standard with a certified value of 60.0% Brix \/ 1.4400 nD (at 25.0°C, ±0.0002 nD), supplied as a 7.4 mL (0.25 oz) bottle with a Letter of NIST Traceability Certification. Intended for verifying and calibrating VEE GEE handheld and Abbe refractometers at the high end of typical Brix measuring ranges, the oil-based formulation provides a stable, non-evaporating standard that holds its value longer than aqueous standards under ambient lab conditions.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFeatures \u0026amp; Benefits\u003c\/h2\u003e\n\u003cul class=\"marker:text-quiet list-disc\"\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cstrong\u003eNIST Traceable Certification:\u003c\/strong\u003e Each bottle is accompanied by a Letter of NIST Traceability Certification — the documentation required for ISO, GLP, and GMP compliance audits that mandate refractometer calibration verification with traceable standards.\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cstrong\u003eOil-Based Formula:\u003c\/strong\u003e Unlike aqueous (water-based) Brix standards, the oil-based formulation does not evaporate on the prism during reading, providing a more stable working surface for single-operator and multi-operator calibration checks.\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cstrong\u003eHigh-Range Verification Point:\u003c\/strong\u003e At 60.0% Brix, the 45000-OS025 verifies refractometer accuracy at the upper range of common Brix scales — ideal for instruments used to measure concentrated juices, syrups, honey, and high-sugar solutions where low-end aqueous calibration alone is insufficient.\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cstrong\u003eDual Reference Values:\u003c\/strong\u003e Certified at both 20°C (60% Brix, 1.4420 nD) and 25°C (60% Brix, 1.4400 nD), providing reference values applicable across standard laboratory temperature ranges without separate temperature correction.\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Manufactured domestically — important for labs with domestic sourcing requirements or supply chain documentation needs.\u003c\/li\u003e\n\u003cli class=\"py-0 my-0 prose-p:pt-0 prose-p:mb-2 prose-p:my-0 [\u0026amp;\u0026gt;p]:pt-0 [\u0026amp;\u0026gt;p]:mb-2 [\u0026amp;\u0026gt;p]:my-0\"\u003e\n\u003cstrong\u003e1-Year Warranty:\u003c\/strong\u003e Covered by VEE GEE Scientific's standard accessory warranty.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"overflow-x-auto my-4\"\u003e\n \u003ctable class=\"min-w-full text-left text-sm border-collapse border border-gray-300\"\u003e\n \u003cthead class=\"bg-gray-100 font-semibold\"\u003e\n \u003ctr\u003e\n \u003cth class=\"p-2 border border-gray-300\"\u003eProperty\u003c\/th\u003e\n \u003cth class=\"p-2 border border-gray-300\"\u003eValue\u003c\/th\u003e\n \u003c\/tr\u003e\n \u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e45000-OS025\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eStandard Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003eOil-based\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eCertified Brix Value (20°C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e60.0%\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eCertified nD Value (20°C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e1.4420 nD\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eCertified nD Value (25°C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e1.4400 nD\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eTolerance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e±0.0002 nD\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eVolume\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e7.4 mL (0.25 oz)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eCertification\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003eLetter of NIST Traceability\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003eClear\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e1 Each\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eDimensions (L × W × H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e1.0\" × 1.0\" × 2.25\" (2.5 × 2.5 × 5.7 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e1 Year\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"p-2 border border-gray-300\"\u003eVEE GEE Scientific\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eLaboratory Applications\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eThe 45000-OS025 is used to verify refractometer accuracy and document calibration in any regulated or quality-controlled environment that requires traceable calibration records. Food and beverage QC labs use it to verify instruments measuring concentrated syrups, honey, jams, and high-Brix fruit concentrates before production runs. Pharmaceutical and cosmetic labs use it to meet GMP calibration documentation requirements. Industrial labs use it to verify instruments monitoring high-concentration process fluids. The oil-based standard pairs with the water-based zero-point calibration that refractometers perform daily — together they provide a two-point calibration verification spanning the instrument's full range. Compatible with VEE GEE X-Series handheld refractometers including the \u003ca href=\"\/search?q=43001\"\u003e43001\u003c\/a\u003e, \u003ca href=\"\/search?q=43002\"\u003e43002 (BTX-1)\u003c\/a\u003e, \u003ca href=\"\/search?q=43003\"\u003e43003\u003c\/a\u003e, \u003ca href=\"\/search?q=43005\"\u003e43005\u003c\/a\u003e, \u003ca href=\"\/search?q=43009\"\u003e43009\u003c\/a\u003e, and others. Note: not compatible with the CDX digital refractometer series.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhat is the difference between an oil-based and a water-based refractometer standard?\u003c\/strong\u003e\u003cbr\u003e\nWater-based standards (aqueous) are used for zero-point calibration — placing distilled water on the prism should read 0% Brix. Oil-based standards like the 45000-OS025 verify accuracy at a defined non-zero point (here, 60% Brix) without evaporating off the prism during measurement. Because oil does not evaporate under ambient conditions, it provides a stable surface for repeatable readings, which is particularly valuable for multi-operator calibration checks and documented GMP\/GLP verification records.\u003c\/p\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eDoes the 45000-OS025 come with a NIST certificate?\u003c\/strong\u003e\u003cbr\u003e\nYes. Each bottle of 45000-OS025 is supplied with a Letter of NIST Traceability Certification documenting the certified Brix and refractive index values. This letter satisfies the calibration documentation requirement for ISO 17025, GLP, GMP, and HACCP audits that mandate traceable calibration records for optical measurement instruments.\u003c\/p\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eWhich VEE GEE refractometers is the 45000-OS025 compatible with?\u003c\/strong\u003e\u003cbr\u003e\nThe 45000-OS025 is compatible with most VEE GEE handheld X-Series refractometers and Abbe refractometers. It is specifically not compatible with the CDX digital refractometer series. For any refractometer with a Brix scale reaching 60%, the 45000-OS025 provides a useful upper-range verification point.\u003c\/p\u003e\n\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003e\u003cstrong\u003eHow do I use the 45000-OS025 to calibrate my refractometer?\u003c\/strong\u003e\u003cbr\u003e\nFirst zero-calibrate your refractometer with distilled water. Then place 1–2 drops of the 45000-OS025 oil standard on the prism and close the daylight plate. Read the Brix value through the eyepiece — it should read 60.0% (±0.2%, which is the instrument's rated accuracy). If the reading deviates beyond the instrument's stated accuracy, recalibrate per the instrument manual. Clean the prism thoroughly with the microfiber cloth after use, as oil residue will affect subsequent measurements.\u003c\/p\u003e\n\n\u003ch2 class=\"mb-2 mt-4 font-display font-semimedium text-base first:mt-0 md:text-lg [hr+\u0026amp;]:mt-4\"\u003eOrdering\u003c\/h2\u003e\n\u003cp class=\"my-2 [\u0026amp;+p]:mt-4 [\u0026amp;_strong:has(+br)]:inline-block [\u0026amp;_strong:has(+br)]:pb-2\"\u003eAuthorized dealer, ships from USA inventory. Serving academic, government, and research laboratories nationwide.\u003c\/p\u003e","brand":"VEE GEE","offers":[{"title":"Default Title","offer_id":48099267838184,"sku":"45000-OS025","price":82.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/5361\/1240\/files\/unnamed_b4e49833-e0a5-4928-852c-86aa512f1f03.jpg?v=1772686161","url":"https:\/\/labsupplies.com\/products\/vee-gee-45000-os025-oil-refractometer-standard-60-brix-nist-traceable","provider":"LabSupplies.com","version":"1.0","type":"link"}